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Medicare Program; Hospital Inpatient Prospective Payment Systems for Acute Care Hospitals and the Long-Term Care Hospital Prospective Payment System and FY 2012 Rates; Hospitals' FTE Resident Caps for Graduate Medical Education Payment

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Start Preamble Start Printed Page 51476

AGENCY:

Centers for Medicare and Medicaid Services (CMS), HHS.

ACTION:

Final rules.

SUMMARY:

We are revising the Medicare hospital inpatient prospective payment systems (IPPS) for operating and capital-related costs of acute care hospitals to implement changes arising from our continuing experience with these systems and to implement certain statutory provisions contained in the Patient Protection and Affordable Care Act and the Health Care and Education Reconciliation Act of 2010 (collectively known as the Affordable Care Act) and other legislation. We also are setting forth the update to the rate-of-increase limits for certain hospitals excluded from the IPPS that are paid on a reasonable cost basis subject to these limits.

We are updating the payment policy and the annual payment rates for the Medicare prospective payment system (PPS) for inpatient hospital services provided by long-term care hospitals (LTCHs) and implementing certain statutory changes made by the Affordable Care Act. In addition, we are finalizing an interim final rule with comment period that implements section 203 of the Medicare and Medicaid Extenders Act of 2010 relating to the treatment of teaching hospitals that are members of the same Medicare graduate medical education affiliated groups for the purpose of determining possible full-time equivalent (FTE) resident cap reductions.

DATES:

Effective dates: These final rules are effective on October 1, 2011, except for the provisions of § 412.230(d)(5), which are effective September 1, 2011. Effective July 29, 2011, the interim rule published March 14, 2011, at 76 FR 13515, is confirmed as final without change.

Applicability dates: The update to the rate-of-increase limits for certain hospitals excluded from the IPPS that are paid on a reasonable cost basis subject to these limits is applicable beginning on or after October 1, 2011. The payment policy and the annual payment rates for inpatient hospital services provided by IPPS hospitals and by long-term care hospitals (LTCHs) and for implementing certain statutory changes made by the Affordable Care Act and other legislation are applicable to discharges occurring on or after October 1, 2011 unless otherwise specified in this final rule.

Start Further Info

FOR FURTHER INFORMATION CONTACT:

Tzvi Hefter, (410) 786-4487, and Ing-Jye Cheng, (410) 786-4548, Operating Prospective Payment, MS-DRGs, Hospital Acquired Conditions (HAC), Wage Index, New Medical Service and Technology Add-On Payments, Hospital Geographic Reclassifications, Graduate Medical Education, Capital Prospective Payment, Excluded Hospitals, Medicare Disproportionate Share Hospital (DSH), and Postacute Care Transfer Issues.

Michele Hudson, (410) 786-4487, and Judith Richter, (410) 786-2590, Long-Term Care Hospital Prospective Payment System and MS-LTC-DRG Relative Weights Issues.

Bridget Dickensheets, (410) 786-8670, Rebasing and Revising of the Market Basket for LTCHs Issues.

Siddhartha Mazumdar, (410) 786-6673, Rural Community Hospital Demonstration Program Issues.

James Poyer, (410) 786-2261, Inpatient Quality Reporting—Program Administration, Validation, and Reconsideration Issues.

Shaheen Halim, (410) 786-0641, Inpatient Quality Reporting—Measures Issues Except Hospital Consumer Assessment of Healthcare Providers and Systems Issues; and Readmission Measures for Hospitals Issues.

Elizabeth Goldstein, (410) 786-6665, Inpatient Quality Reporting—Hospital Consumer Assessment of Healthcare Providers and Systems Measures Issues.

Mary Pratt, (410) 786-6867, LTCH Quality Data Reporting Issues.

Kim Spaulding Bush, (410) 786-3232, Hospital Value-Based Purchasing Efficiency Measures Issues.

End Further Info End Preamble Start Supplemental Information

SUPPLEMENTARY INFORMATION:

Electronic Access

This Federal Register document is also available from the Federal Register online database through GPO Access, a service of the U.S. Government Printing Office. Free public access is available on a Wide Area Information Server (WAIS) through the Internet and via asynchronous dial-in. Internet users can access the database by using the World Wide Web, (the Superintendent of Documents' home Web page address is http://www.gpoaccess.gov/​), by using local WAIS client software, or by telnet to swais.access.gpo.gov, then log in as guest (no password required). Dial-in users should use communications software and modem to call (202) 512-1661; type swais, then log in as guest (no password required).

Tables Available Only Through the Internet on the CMS Web Site

In the past, a majority of the tables referred to throughout this preamble and in the Addendum to this final rule were published in the Federal Register as part of the annual proposed and final rules. However, beginning in FY 2012, some of the IPPS tables and LTCH PPS tables will no longer be published as part of the annual IPPS and LTCH PPS proposed and final rules. Instead, these tables will be available only through the Internet. The IPPS tables for this final rule are available only through the Internet on the CMS Web site at: http://www.cms.hhs.gov/​AcuteInpatientPPS/​01_​overview.asp. Click on the link on the left side of the screen titled, “FY 2012 IPPS Final Rule Home Page” or “Acute Inpatient—Files for Download.” The LTCH PPS tables for this FY 2012 final rule are available only through the Internet on the CMS Web site at: http://www.cms.gov/​LongTermCareHospitalPPS/​LTCHPPSRN/​list.asp under the list item for Regulation Number CMS-1518-F. For complete details on the availability of the tables referenced in this final rule, we refer readers to section VI. of the Addendum to this final rule.

Readers who experience any problems accessing any of the tables that are posted on the CMS Web sites identified above should contact Nisha Bhat at (410) 786-4487.

Acronyms

3M 3M Health Information System

AAMC Association of American Medical Colleges

ACGME Accreditation Council for Graduate Medical Education

AHA American Hospital Association

AHIC American Health Information Community

AHIMA American Health Information Management Association

AHRQ Agency for Healthcare Research and Quality

ALOS Average length of stay

ALTHA Acute Long Term Hospital Association

AMA American Medical Association

AMGA American Medical Group AssociationStart Printed Page 51477

AOA American Osteopathic Association

APR DRG All Patient Refined Diagnosis Related Group System

ARRA American Recovery and Reinvestment Act of 2009, Public Law 111-5

ASC Ambulatory surgical center

ASCA Administrative Simplification Compliance Act of 2002, Public Law 107-105

ASITN American Society of Interventional and Therapeutic Neuroradiology

BBA Balanced Budget Act of 1997, Public Law 105-33

BBRA Medicare, Medicaid, and SCHIP [State Children's Health Insurance Program] Balanced Budget Refinement Act of 1999, Public Law 106-113

BIPA Medicare, Medicaid, and SCHIP [State Children's Health Insurance Program] Benefits Improvement and Protection Act of 2000, Public Law 106-554

BLS Bureau of Labor Statistics

CAH Critical access hospital

CARE [Medicare] Continuity Assessment Record & Evaluation [Instrument]

CART CMS Abstraction & Reporting Tool

CBSAs Core-based statistical areas

CC Complication or comorbidity

CCR Cost-to-charge ratio

CDAC [Medicare] Clinical Data Abstraction Center

CDAD Clostridium difficile-associated disease

CIPI Capital input price index

CMI Case-mix index

CMS Centers for Medicare & Medicaid Services

CMSA Consolidated Metropolitan Statistical Area

COBRA Consolidated Omnibus Reconciliation Act of 1985, Public Law 99-272

COLA Cost-of-living adjustment

CoP [Hospital] condition of participation

CPI Consumer price index

CRNA Certified Registered Nurse Anesthetist

CY Calendar year

DPP Disproportionate patient percentage

DRA Deficit Reduction Act of 2005, Public Law 109-171

DRG Diagnosis-related group

DSH Disproportionate share hospital

ECI Employment cost index

EDB [Medicare] Enrollment Database

EHR Electronic health record

EMR Electronic medical record

FAH Federation of Hospitals

FDA Food and Drug Administration

FFY Federal fiscal year

FQHC Federally qualified health center

FTE Full-time equivalent

FY Fiscal year

GAAP Generally Accepted Accounting Principles

GAF Geographic Adjustment Factor

GME Graduate medical education

HACs Hospital-acquired conditions

HCAHPS Hospital Consumer Assessment of Healthcare Providers and Systems

HCFA Health Care Financing Administration

HCO High-cost outlier

HCRIS Hospital Cost Report Information System

HHA Home health agency

HHS Department of Health and Human Services

HICAN Health Insurance Claims Account Number

HIPAA Health Insurance Portability and Accountability Act of 1996, Public Law 104-191

HIPC Health Information Policy Council

HIS Health information system

HIT Health information technology

HMO Health maintenance organization

HPMP Hospital Payment Monitoring Program

HSA Health savings account

HSCRC [Maryland] Health Services Cost Review Commission

HSRV Hospital-specific relative value

HSRVcc Hospital-specific relative value cost center

HQA Hospital Quality Alliance

HQI Hospital Quality Initiative

ICD-9-CM International Classification of Diseases, Ninth Revision, Clinical Modification

ICD-10-CM International Classification of Diseases, Tenth Revision, Clinical Modification

ICD-10-PCS International Classification of Diseases, Tenth Revision, Procedure Coding System

ICR Information collection requirement

IGI IHS Global Insight, Inc.

IHS Indian Health Service

IME Indirect medical education

I-O Input-Output

IOM Institute of Medicine

IPF Inpatient psychiatric facility

IPPS [Acute care hospital] inpatient prospective payment system

IRF Inpatient rehabilitation facility

IQR Inpatient Quality Reporting

LAMCs Large area metropolitan counties

LOS Length of stay

LTC-DRG Long-term care diagnosis-related group

LTCH Long-term care hospital

MA Medicare Advantage

MAC Medicare Administrative Contractor

MCC Major complication or comorbidity

MCE Medicare Code Editor

MCO Managed care organization

MCV Major cardiovascular condition

MDC Major diagnostic category

MDH Medicare-dependent, small rural hospital

MedPAC Medicare Payment Advisory Commission

MedPAR Medicare Provider Analysis and Review File

MEI Medicare Economic Index

MGCRB Medicare Geographic Classification Review Board

MIEA-TRHCA Medicare Improvements and Extension Act, Division B of the Tax Relief and Health Care Act of 2006, Public Law 109-432

MIPPA Medicare Improvements for Patients and Providers Act of 2008, Public Law 110-275

MMA Medicare Prescription Drug, Improvement, and Modernization Act of 2003, Public Law 108-173

MMEA Medicare and Medicaid Extenders Act of 2010, Public Law 111-309

MMSEA Medicare, Medicaid, and SCHIP Extension Act of 2007, Public Law 110-173

MRHFP Medicare Rural Hospital Flexibility Program

MRSA Methicillin-resistant Staphylococcus aureus

MSA Metropolitan Statistical Area

MS-DRG Medicare severity diagnosis-related group

MS-LTC-DRG Medicare severity long-term care diagnosis-related group

NAICS North American Industrial Classification System

NALTH National Association of Long Term Hospitals

NCD National coverage determination

NCHS National Center for Health Statistics

NCQA National Committee for Quality Assurance

NCVHS National Committee on Vital and Health Statistics

NECMA New England County Metropolitan Areas

NQF National Quality Forum

NTIS National Technical Information Service

NTTAA National Technology Transfer and Advancement Act of 1991 (Pub. L. 104-113)

NVHRI National Voluntary Hospital Reporting Initiative

OACT [CMS'] Office of the Actuary

OBRA 86 Omnibus Budget Reconciliation Act of 1996, Public Law 99-509

OES Occupational employment statistics

OIG Office of the Inspector General

OMB Executive Office of Management and Budget

OPM U.S. Office of Personnel Management

O.R. Operating room

OSCAR Online Survey Certification and Reporting [System]

PMSAs Primary metropolitan statistical areas

POA Present on admission

PPACA Patient Protection and Affordable Care Act, Public Law 111-148

PPI Producer price index

PPS Prospective payment system

PRM Provider Reimbursement Manual

ProPAC Prospective Payment Assessment Commission

PRRB Provider Reimbursement Review Board

PRTFs Psychiatric residential treatment facilities

PSF Provider-Specific File

PS&R Provider Statistical and Reimbursement (System)

QIG Quality Improvement Group, CMS

QIO Quality Improvement Organization

RCE Reasonable compensation equivalent

RHC Rural health clinic

RHQDAPU Reporting hospital quality data for annual payment update

RNHCI Religious nonmedical health care institution

RPL Rehabilitation psychiatric long-term care (hospital)

RRC Rural referral center

RTI Research Triangle Institute, International

RUCAs Rural-urban commuting area codes

RY Rate year

SAF Standard Analytic File

SCH Sole community hospital

SFY State fiscal year

SIC Standard Industrial ClassificationStart Printed Page 51478

SNF Skilled nursing facility

SOCs Standard occupational classifications

SOM State Operations Manual

SSO Short-stay outlier

TEFRA Tax Equity and Fiscal Responsibility Act of 1982, Public Law 97-248

TEP Technical expert panel

TMA TMA [Transitional Medical Assistance], Abstinence Education, and QI [Qualifying Individuals] Programs Extension Act of 2007, Public Law 110-90

UHDDS Uniform hospital discharge data set

Table of Contents

I. Background

A. Summary

1. Acute Care Hospital Inpatient Prospective Payment System (IPPS)

2. Hospitals and Hospital Units Excluded From the IPPS

3. Long-Term Care Hospital Prospective Payment System (LTCH PPS)

4. Critical Access Hospitals (CAHs)

5. Payments for Graduate Medical Education (GME)

B. Provisions of the Patient Protection and Affordable Care Act (Pub. L. 111-148) and the Health Care and Education Reconciliation Act of 2010 (Pub. L. 111-152) Applicable to FY 2012

C. Issuance of a Notice of Proposed Rulemaking

1. Proposed Changes to MS-DRG Classifications and Recalibrations of Relative Weights

2. Proposed Changes to the Hospital Wage Index for Acute Care Hospitals

3. Other Decisions and Proposed Changes to the IPPS for Operating Costs and GME Costs

4. Proposed FY 2012 Policy Governing the IPPS for Capital-Related Costs

5. Proposed Changes to the Payment Rates for Certain Excluded Hospitals: Rate-of-Increase Percentages

6. Proposed Changes to the LTCH PPS

7. Determining Proposed Prospective Payment Operating and Capital Rates and Rate-of-Increase Limits for Acute Care Hospitals

8. Determining Proposed Prospective Payments Rates for LTCHs

9. Impact Analysis

10. Recommendation of Update Factors for Operating Cost Rates of Payment for Hospital Inpatient Services

11. Discussion of Medicare Payment Advisory Commission Recommendations

D. Public Comments Received in Response to the FY 2012 IPPS/LTCH PPS Proposed Rule

E. Finalization of Interim Final Rule With Comment Period on Revisions to the Reductions and Increases to Hospitals' FTE Resident Caps for Graduate Medical Education Payment Purposes

II. Changes to Medicare Severity Diagnosis-Related Group (MS-DRG) Classifications and Relative Weights

A. Background

B. MS-DRG Reclassifications

1. General

2. Yearly Review for Making MS-DRG Changes

C. Adoption of the MS-DRGs in FY 2008

D. FY 2012 MS-DRG Documentation and Coding Adjustment, Including the Applicability to the Hospital-Specific Rates and the Puerto Rico-Specific Standardized Amount

1. Background on the Prospective MS-DRG Documentation and Coding Adjustments for FY 2008 and FY 2009 Authorized by Public Law 110-90

2. Prospective Adjustment to the Average Standardized Amounts Required by Section 7(b)(1)(A) of Public Law 110-90

3. Recoupment or Repayment Adjustments in FYs 2010 through 2012 Required by Public Law 110-90

4. Retrospective Evaluation of FY 2008 and FY 2009 Claims Data

5. Prospective Adjustment for FY 2010 and Subsequent Years Authorized by Section 7(b)(1)(A) of Public Law 110-90 and Section 1886(d)(3)(vi) of the Act

6. Recoupment or Repayment Adjustment for FY 2010 Authorized by Section 7(b)(1)(B) of Public Law 110-90

7. Background on the Application of the Documentation and Coding Adjustment to the Hospital-Specific Rates

8. Documentation and Coding Adjustment to the Hospital-Specific Rates for FY 2011 and Subsequent Fiscal Years

9. Application of the Documentation and Coding Adjustment to the Puerto Rico-Specific Standardized Amount

a. Background

b. Documentation and Coding Adjustment to the Puerto Rico-Specific Standardized Amount

E. Refinement of the MS-DRG Relative Weight Calculation

1. Background

2. Summary of the RTI Study of Charge Compression and CCR Refinement

3. Summary of Policy Changes Made in FY 2011

4. Discussion for FY 2012

F. Preventable Hospital-Acquired Conditions (HACs), Including Infections

1. Background

a. Statutory Authority

b. HAC Selection

c. Collaborative Process

d. Application of HAC Payment Policy to MS-DRG Classifications

e. Public Input Regarding Selected and Potential Candidate HACs

f. POA Indicator Reporting

2. Additions and Revisions to the HAC Policy for FY 2012

a. Contrast-Induced Acute Kidney Injury

b. New Diagnosis Codes Added to Existing HACs

c. Revision to HAC Subcategory Title

d. Conclusion

3. RTI Program Evaluation Summary

a. Background

b. FY 2009 Data Analysis

c. FY 2010 Data Analysis

d. FY 2010 RTI Analysis on POA Indicator Reporting of Current HACs.

e. FY 2010 RTI Analysis of Frequency of Discharges and POA Indicator Reporting for Current HACs

f. RTI Analysis of Circumstances When Application of HAC Provisions Would Not Result in MS-DRG Reassignment for Current HACs

g. RTI Analysis of Coding Changes for HAC-Associated Secondary Diagnoses for Current HACs

h. RTI Analysis of Estimated Net Savings for Current HACs

i. Previously Considered Candidate HACs—RTI Analysis of Frequency of Discharges and POA Indicator Reporting

j. Current and Previously Considered Candidate HACs—RTI Report on Evidence-Based Guidelines

k. Final Policy Regarding Current HACs and Previously Considered Candidate HACs

G. Changes to Specific MS-DRG Classifications

1. Pre-Major Diagnostic Categories (Pre-MDCs)

a. Noninvasive Mechanical Ventilation

b. Debridement With Mechanical Ventilation Greater Than 96 Hours With Major Operating Room (O.R.) Procedure

c. Autologous Bone Marrow Transplant

2. MDC 1 (Diseases and Disorders of the Nervous System): Rechargeable Dual Array Deep Brain Stimulation System

3. MDC 3 (Diseases and Disorders of the Ear, Nose, Mouth, and Throat): Skull Based Surgeries

4. MDC 5 (Diseases and Disorders of the Circulatory System)

a. Percutaneous Mitral Valve Repair With Implant

b. Aneurysm Repair Procedure Codes

5. MDC 8 (Diseases and Disorders of the Musculoskeletal System and Connective Tissue)

a. Artificial Discs

b. Major Joint Replacement or Reattachment of Lower Extremities

c. Combined Anterior/Posterior Spinal Fusion

6. MDC 9 (Diseases and Disorders of the Skin, Subcutaneous Tissue, and Breast): Excisional Debridement of Wound, Infection, or Burn

7. MDC 10 (Endocrine, Nutritional, and Metabolic Diseases and Disorders)

a. Nutritional and Metabolic Diseases: Update of MS-DRG Titles

b. Sleeve Gastrectomy Procedure for Morbid Obesity

8. MDC 15 (Newborns and Other Neonates with Conditions Originating in the Perinatal Period): Discharge Status Code 66 (Discharged/Transferred to Critical Access Hospital (CAH))

9. Medicare Code Editor (MCE) Changes

10. Surgical Hierarchies

11. Complications or Comorbidity (CC) Exclusions List

a. Background

b. CC Exclusions List for FY 2012

12. Review of Procedure Codes in MS-DRGs 981 Through 983, 984 Through 986, and 987 Through 989

a. Moving Procedure Codes From MS-DRGs 981 Through 983 or MS-DRGs 987 Through 989 Into MDCs

b. Reassignment of Procedures Among MS-DRGs 981 Through 983, 984 Through 986, and 987 Through 989

c. Adding Diagnosis or Procedure Codes to MDCs

13. Changes to the ICD-9-CM Coding System, Including Discussion of the Start Printed Page 51479Replacement of the ICD-9-CM System With the ICD-10-CM and ICD-10-PCS Systems in FY 2014

a. ICD-9-CM Coding System

b. Code Freeze

c. Processing of 25 Diagnosis Codes and 25 Procedure Codes on Hospital Inpatient Claims

d. ICD-10 MS-DRGs

14. Other Issues

a. O.R./Non-O.R. Status of Procedures

b. IPPS Recalled Device Policy Clarification

15. Public Comments on Issues Not Addressed in Proposed Rule

H. Recalibration of MS-DRG Weights

I. Add-On Payments for New Services and Technologies

1. Background

2. Public Input Before Publication of a Notice of Proposed Rulemaking on Add-On Payments

3. FY 2012 Status of Technologies Approved for FY 2011 Add-On Payments

a. Spiration® IBV Valve System

b. Cardio WestTM Temporary Artificial Heart System (Cardio WestTM TAH-t)

c. Auto Laser Interstitial Thermal Therapy (AutoLITTTM) System

4. FY 2012 Applications for New Technology Add-On Payments

a. AxiaLIF® 2L+TM System

b. PerfectCLEAN with Micrillon®

III. Changes to the Hospital Wage Index for Acute Care Hospitals

A. Background

B. Core-Based Statistical Areas for the Hospital Wage Index

C. Occupational Mix Adjustment to the FY 2012 Wage Index

1. Development of Data for the FY 2012 Occupational Mix Adjustment Based on the 2007-2008 Occupational Mix Survey

2. New 2010 Occupational Mix Survey for the FY 2013 Wage Index

3. Calculation of the Occupational Mix Adjustment for FY 2012

D. Worksheet S-3 Wage Data for the FY 2012 Wage Index

1. Included Categories of Costs

2. Changes to the Reporting Requirements for Pension Costs for the Medicare Wage Index

a. Background

b. Allowable Pension Cost for the Medicare Wage Index

3. Excluded Categories of Costs

4. Use of Wage Index Data by Providers Other Than Acute Care Hospitals under the IPPS

E. Verification of Worksheet S-3 Wage Data

F. Method for Computing the FY 2012 Unadjusted Wage Index

1. Steps for Computation

2. Imputed Floor Policy

3. FY 2012 Puerto Rico Wage Index

G. Analysis and Implementation of the Occupational Mix Adjustment and the FY 2012 Occupational Mix Adjusted Wage Index

H. Revisions to the Wage Index Based on Hospital Redesignations and Reclassifications

1. General

2. Effects of Reclassification/Redesignation

3. FY 2012 MGCRB Reclassifications

a. FY 2012 Reclassification Requirements and Approvals

b. Applications for Reclassifications for FY 2013

4. Redesignations of Hospitals Under Section 1886(d)(8)(B) of the Act

5. Reclassifications Under Section 1886(d)(8)(B) of the Act

6. Reclassifications Under Section 508 of Public Law 108-173

7. Waiving Lugar Redesignation for the Out-Migration Adjustment

8. Other Geographic Reclassification Issues

a. Requested Reclassification for Single Hospital MSAs

b. Requests for Exceptions to Geographic Reclassification Rules

I. FY 2012 Wage Index Adjustment Based on Commuting Patterns of Hospital Employees

J. Process for Requests for Wage Index Data Corrections

K. Labor-Related Share for the FY 2012 Wage Index

IV. Other Decisions and Changes to the IPPS for Operating Costs and GME Costs

A. Hospital Inpatient Quality Reporting Program

1. Background

a. Overview

b. Statutory History and History of Measures Adopted for the Hospital IQR Program

c. Maintenance of Technical Specifications for Quality Measures

d. Public Display of Quality Measures

2. Retirement of Hospital IQR Program Measures

a. Considerations in Retiring Quality Measures from the Hospital IQR Program

b. Retirement of Hospital IQR Program Measures for the FY 2014 Payment Determination and Subsequent Years

3. Measures for the FY 2014 and FY 2015 Hospital IQR Payment Determinations

a. Considerations in Expanding and Updating Quality Measures Under the Hospital IQR Program

b. Hospital IQR Program Measures for the FY 2014 Hospital IQR Payment Determination

c. Hospital IQR Program Quality Measures for the FY 2015 Payment Determination

4. Possible New Quality Measures and Measure Topics for Future Years

5. Form, Manner, and Timing of Quality Data Submission

a. Background

b. Procedural Requirements for the FY 2012 Payment Determinations and Subsequent Years

c. Procedural Requirements for FY 2013 and Subsequent Years

d. Data Submission Requirements for Chart-Abstracted Measures

e. Sampling and Case Thresholds Beginning With the FY 2015 Payment Determination

f. HCAHPS Requirements for the FY 2013, FY 2014, and FY 2015 Payment Determinations

g. Procedures for Claims-Based Measures

h. Data Submission Requirements for Structural Measures

i. Data Submission and Reporting Requirements for Healthcare-Associated Infection (HAI) Measures Reported via NHSN

6. Chart Validation Requirements for Chart-Abstracted Measures

a. Changes to the Chart Validation Requirements and Methods for the FY 2012 Payment Determination and Subsequent Years

b. Supplements to the Chart Validation Process for the FY 2014 Payment Determination and Subsequent Years

7. QIO Regulation Changes for Provider Medical Record Deadlines Possibly Including Serious Reportable Events

8. Data Accuracy and Completeness Acknowledgement Requirements for the FY 2012 Payment Determination and Subsequent Years

9. Public Display Requirements for the FY 2014 Payment Determination and Subsequent Years

10. Reconsideration and Appeal Procedures for the FY 2012 Payment Determination

11. Hospital IQR Program Disaster Waivers

12. Electronic Health Records (EHRs)

a. Background

b. HITECH Act EHR Provisions

B. Hospital Value-Based Purchasing (VBP) Program

1. Background

2. Overview of the Hospital VBP Program Proposed Rule

3. FY 2014 Hospital VBP Program Measures

a. Background

b. Efficiency Measure—Medicare Spending per Beneficiary Measure—for the FY 2014 Hospital VBP Program

4. Efficiency Domain (Medicare Spending per Beneficiary Measure) Performance Period and Baseline Period

5. Simultaneous Specification of Additional Measures for the Hospital VBP Program and the Hospital IQR Program

6. Responses to Additional Hospital VBP Program Comments

C. Hospital Readmissions Reduction Program

1. Background

a. Overview

b. Statutory Basis for the Hospital Readmissions Reduction Program

2. Implementation of the Hospital Readmissions Reduction Program

a. Overview

b. Provisions in the FY 2012 IPPS/LTCH PPS Rulemaking

c. Provisions to be Included in the FY 2013 IPPS/LTCH PPS Proposed Rule

d. Expansion of the Applicable Conditions To Be Included in the Future Rulemaking

3. Provisions of the Hospital Readmissions Reduction Program

a. Applicable Conditions for FY 2013 Hospital Readmissions Reduction Program

b. Definition of “Readmissions”

c. Readmission Measures and Related Methodology

D. Rural Referral Centers (RRCs) (§ 412.96)

1. Case-Mix Index (CMI)

2. Discharges

E. Payment Adjustment for Low-Volume Hospitals (§ 412.101)Start Printed Page 51480

1. Background

2. Temporary Changes for FYs 2011 and 2012

3. Discharge Data Source Used to Identify Qualifying Low-Volume Hospitals and Calculate the Payment Adjustment (Percentage Increase) for FY 2012

F. Indirect Medical Education (IME) Adjustment

1. Background

2. IME Adjustment Factor for FY 2012

G. Payment Adjustment for Medicare Disproportionate Share Hospitals (DSHs) and Indirect Medical Education (IME) (§§ 412.105 and 412.106)

1. Background

2. Policy Change Relating to the Exclusion of Hospice Beds and Patient Days From the Calculation of the Medicare DSH Payment Adjustment and the IME Payment Adjustment

a. Background

b. Hospice Inpatient Services

H. Medicare-Dependent, Small Rural Hospitals (MDHs) (§ 412.108)

1. Background

2. Extension of the MDH Program

I. Certified Register Nurse Anesthetists (CRNA) Services Furnished in Rural Hospitals and CAHs (§ 412.113)

J. Additional Payments for Qualifying Hospitals With Lowest per Enrollee Medicare Spending

1. Background

2. Method for Identifying Qualifying Hospitals and Eligible Counties

3. Determination of Annual Payment Amounts

4. Eligible Counties and Qualifying Hospitals

5. Payment Determination and Distributions for FY 2011 and FY 2012

K. Changes in the Inpatient Hospital Update

1. FY 2012 Inpatient Hospital Update

2. FY 2012 Puerto Rico Hospital Update

3. Productivity Adjustment

L. Additional Payments to Hospitals With High Percentage of End-Stage Renal Disease (ESRD) Discharges (§ 412.104)

M. Changes to the Reporting Requirements for Pension Costs for Medicare Cost-Finding Purposes

1. Background

2. Allowable Defined Benefit Pension Plan Cost for Medicare Cost-Finding Purposes

N. Rural Community Hospital Demonstration Program

1. Background

2. Changes to the Demonstration Program Made by the Affordable Care Act

3. FY 2012 Budget Neutrality Adjustment

a. Component of the FY 2012 Budget Neutrality Adjustment that Accounts for Estimated Demonstration Program Costs of the “Pre-Expansion” Participating Hospitals

b. Portion of the FY 2012 Budget Neutrality Adjustment That Accounts for Estimated FY 2012 Demonstration Program Costs for Hospitals Newly Selected to Participate in the Demonstration Program

c. Portion of the FY 2012 Budget Neutrality Adjustment to Offset the Amount by Which the Costs of the Demonstration Program in FYs 2007 and 2008 Exceeded the Amount That Was Identified in the FYs 2007 and 2008 IPPS Final Rules as the Budget Neutrality Offset for FYs 2007 and 2008

O. Bundling of Payments for Services Provided to Outpatients Who Later Are Admitted as Inpatients: 3-Day Payment Window

1. Background

2. Establishment of Condition Code 51 (Attestation of Unrelated Outpatient Nondiagnostic Services)

3. Applicability of the Payment Window Policy to Services Furnished at Physicians' Practices

P. Changes to MS-DRGs Subject to the Postacute Care Transfer Policy

1. Background

2. Changes to the Postacute Care Transfer MS-DRGs

Q. Hospital Services Furnished Under Arrangements

R. Finalization of Interim Final Rule With Comment Period on Revisions to the Reductions and Increases to Hospitals' FTE Resident Caps for Graduate Medical Education Purposes

1. Background and Provisions of the Interim Final Rule With Comment Period

a. Statutory Authority

b. Reductions and Increases to Hospitals' FTE Resident Caps for GME Payment Purposes Under Section 5503 of the Affordable Care Act

c. Treatment of Affiliated Groups Under Section 5503 of the Affordable Care Act

d. Section 203 of the Medicare and Medicaid Extenders Act of 2010 (Pub. L. 111-309)

2. Summary of the Provisions of the Interim Final Rule With Comment Period

3. Summary of Public Comments, Departmental Responses, and Statements of Final Policies

a. Summary of Public Comments and Departmental Responses

b. Final Policies

4. Collection of Information Requirements

5. Regulatory Impact Statement

a. Statement of Need

b. Overall Impact

c. Anticipated Effects

d. Alternatives Considered

e. Conclusion

6. Comment on Issues Outside of the Scope of the Interim Final Rule With Comment Period

V. Changes to the IPPS for Capital-Related Costs

A. Overview

B. Exception Payments

C. New Hospitals

D. Hospitals Located in Puerto Rico

E. Changes for FY 2012: MS-DRG Documentation and Coding Adjustment

1. Background

2. Prospsective MS-DRG Documentation and Coding Adjustment to the National Capital Federal Rate for FY 2012 and Subsequent Years

3. Documentation and Coding Adjustment to the Puerto Rico-Specific Capital Rate

F. Other Proposed Changes for FY 2012

VI. Changes for Hospitals Excluded From the IPPS

A. Excluded Hospitals

B. Critical Access Hospital (CAH) Payment for Ambulance Services

1. Background

2. Requirement for CAH Ambulance Within a 35-Mile Location of a CAH or Entity

C. Report of Adjustment (Exceptions) Payments

VII. Changes to the Long-Term Care Hospital Prospective Payment System (LTCH PPS) for FY 2012

A. Background of the LTCH PPS

1. Legislative and Regulatory Authority

2. Criteria for Classification as a LTCH

a. Classification as a LTCH

b. Hospitals Excluded From the LTCH PPS

3. Limitation on Charges to Beneficiaries

4. Administrative Simplification Compliance Act (ASCA) and Health Insurance Portability and Accountability Act (HIPAA) Compliance

B. Medicare Severity Long-Term Care Diagnosis-Related Group (MS-LTC-DRG) Classifications and Relative Weights

1. Background

2. Patient Classifications Into MS-LTC-DRGs

a. Background

b. Changes to the MS-LTC-DRGs for FY 2012

3. Development of the FY 2012 MS-LTC-DRG Relative Weights

a. General Overview of the Development of the MS-LTC-DRG Relative Weights

b. Development of the MS-LTC-DRG Relative Weights for FY 2012

c. Data

d. Hospital-Specific Relative Value (HSRV) Methodology

e. Treatment of Severity Levels in Developing the MS-LTC-DRG Relative Weights

f. Low-Volume MS-LTC-DRGs

g. Steps for Determining the Proposed FY 2012 MS-LTC-DRG Relative Weights

C. Quality Reporting Program for LTCHs

1. Background and Statutory Authority

2. Quality Measures for the LTCH Quality Reporting Program for FY 2014

a. Considerations in the Selection of the Quality Measures

b. LTCH Quality Measures for FY 2014 Payment Determination

3. Possible LTCH Quality Measures Under Consideration for Future Years

4. Data Submission Methods and Timelines

a. Method of Data Submission for HAIs

b. Timeline for Data Reporting Related to HAIs

c. Method of Data Collection and Submission for the Pressure Ulcer Measure Data

d. Timeline for Data Reporting Related to Pressure Ulcers

5. Public Reporting and Availability of Data Submitted

D. Rebasing and Revising of the Market Basket Used Under the LTCH PPS

1. Background

2. Overview of the FY 2008-Based RPL Market Basket

3. Rebasing and Revising of the RPL Market Basket

a. Development of Cost CategoriesStart Printed Page 51481

b. Final Cost Category Computation

c. Selection of Price Proxies

d. Methodology for Capital Portion of the RPL Market Basket

e. FY 2012 Market Basket Update for LTCHs

f. Labor-Related Share

E. Changes to the LTCH Payment Rates and Other Changes to the FY 2012 LTCH PPS

1. Overview of Development of the LTCH Payment Rates

2. FY 2012 LTCH PPS Annual Market Basket Update

a. Overview

b. Revision of Certain Market Basket Updates as Required by the Affordable Care Act

c. Market Basket Under the LTCH PPS for FY 2012

d. Productivity Adjustment

e. Annual Market Basket Update for LTCHs for FY 2012

3. Budget Neutrality Adjustment for the Changes to the Area Wage Level Adjustment

4. Greater Than 25 Day Average Length of Stay Requirement for LTCHs

a. Determining the Average Length of Stay When There is a Change of Ownership

b. Inclusion of Medicare Advantage (MA) Days in the Average Length of Stay Calculation

F. Application of LTCH Moratorium on the Increase in Beds at Section 114(d)(1)(B) of Public Law 110-173 (MMSEA) to LTCHs and LTCH Satellite Facilities Established or Classified as Such Under Section 114(d)(2) of Public Law 110-173

VIII. MedPAC Recommendations

IX. Other Required Information

A. Requests for Data From the Public

B. Collection of Information Requirements

1. Statutory Requirement for Solicitation of Comments

2. ICRs for Add-On Payments for New Services and Technologies

3. ICRs for the Hospital Inpatient Quality Reporting (IQR) Program

4. ICRs for the Occupational Mix Adjustment to the FY 2012 Index (Hospital Wage Index Occupational Mix Survey)

5. Hospital Applications for Geographic Reclassifications by the MGCRB

6. ICRs for the Quality Reporting Program for LTCHs

Regulation Text

Addendum—Schedule of Standardized Amounts, Update Factors, and Rate-of-Increase Percentages Effective With Cost Reporting Periods Beginning on or After October 1, 2011

I. Summary and Background

II. Changes to the Prospective Payment Rates for Hospital Inpatient Operating Costs for Acute Care Hospitals for FY 2012

A. Calculation of the Adjusted Standardized Amount

B. Adjustments for Area Wage Levels and Cost-of-Living

C. MS-DRG Relative Weights

D. Calculation of the Prospective Payment Rates

III. Changes to Payment Rates for Acute Care Hospital Inpatient Capital-Related Costs for FY 2012

A. Determination of Federal Hospital Inpatient Capital-Related Prospective Payment Rate Update

B. Calculation of the Inpatient Capital-Related Prospective Payments for FY 2012

C. Capital Input Price Index

IV. Changes to Payment Rates for Certain Excluded Hospitals: Rate-of-Increase Percentages for FY 2012

V. Changes to the Payment Rates for the LTCH PPS for FY 2012

A. LTCH PPS Standard Federal Rate for FY 2012

B. Adjustment for Area Wage Levels Under the LTCH PPS for FY 2012

C. Adjustment for LTCH PPS High-Cost Outlier (HCO) Cases

D. Computing the Adjusted LTCH PPS Federal Prospective Payments for FY 2012

VI. Tables Referenced in This Final Rulemaking and Available Through the Internet on the CMS Web Site

Appendix A—Economic Analyses

I. Regulatory Impact Analysis

A. Introduction

B. Need

C. Objectives of the IPPS

D. Limitations of Our Analysis for the IPPS

E. Hospitals Included in and Excluded From the IPPS

F. Effects on Hospitals and Hospital Units Excluded From the IPPS

G. Quantitative Effects of the Policy Changes Under the IPPS for Operating Costs

1. Basis and Methodology of Estimates

2. Analysis of Table I

3. Impact Analysis of Table II

H. Effects of Other Policy Changes

1. Effects of Policy on HACs, Including Infections

2. Effects of Policy Changes Relating to New Medical Service and Technology Add-On Payments

3. Effects of Requirements for Hospital Inpatient Quality Reporting (IQR) Program

4. Effects of Additional Hospital Value-Based Purchasing (VBP) Program Requirements

5. Effects of Requirements for Hospital Readmissions Reduction Program

6. Effects of Policy Changes Relating to Payment Adjustments for Medicare Disproportionate Share Hospitals (DSHs) and Indirect Medical Education (IME)

7. Effects of the FY 2012 Low-Volume Hospital Payment Adjustment

8. Effects of Changes Relating to MDHs

9. Effects of Policy Relating to CRNA Services Furnished in Rural Hospitals and CAHs

10. Effects of Changes Relating to ESRD Add-On Payment

11. Effects of Changes Relating to the Reporting Requirements for Pension Costs for Medicare Cost-Finding and Wage Reporting Purposes

12. Effects of Implementation of Rural Community Hospital Demonstration Program

13. Effects of Changes to List of MS-DRGs Subject to the Postacute Care Transfer and DRG Special Pay Policy

14. Effects of Changes Relating to Hospital Services Furnished Under Arrangements

15. Effects of Change Relating to CAH Payment for Ambulance Services

16. Effects of Finalization of Revisions to the Reductions and Increases to Hospitals' FTE Resident Caps for Graduate Medical Education Payment Purposes

I. Effects of Changes in the Capital IPPS

1. General Considerations

2. Results

J. Effects of Payment Rate Changes and Policy Changes Under the LTCH PPS

1. Introduction and General Considerations

2. Impact on Rural Hospitals

3. Anticipated Effects of LTCH PPS Payment Rate Change and Policy Changes

4. Effect on the Medicare Program

5. Effect on Medicare Beneficiaries

K. Alternatives Considered

L. Overall Conclusion

1. Acute Care Hospitals

2. LTCHs

M. Accounting Statements and Tables

1. Acute Care Hospitals

2. LTCHs

II. Regulatory Flexibility Act (RFA) Analysis

III. Unfunded Mandate Reform Act (UMRA) Analysis

IV. Executive Order 12866

Appendix B: Recommendation of Update Factors for Operating Cost Rates of Payment for Inpatient Hospital Services

I. Background

II. Inpatient Hospital Update for FY 2012

A. Final FY 2012 Inpatient Hospital Update

B. Final Update for SCHs and MDHs for FY 2012

C. Final FY 2012 Puerto Rico Hospital Update

D. Final Update for Hospitals Excluded From the IPPS

III. Secretary's Recommendation

IV. MedPAC Recommendation for Assessing Payment Adequacy and Updating Payments in Traditional Medicare

I. Background

A. Summary

1. Acute Care Hospital Inpatient Prospective Payment System (IPPS)

Section 1886(d) of the Social Security Act (the Act) sets forth a system of payment for the operating costs of acute care hospital inpatient stays under Medicare Part A (Hospital Insurance) based on prospectively set rates. Section 1886(g) of the Act requires the Secretary to pay for the capital-related costs of hospital inpatient stays under a prospective payment system (PPS). Under these PPSs, Medicare payment for hospital inpatient operating and capital-related costs is made at predetermined, specific rates for each hospital discharge. Discharges are classified according to a list of diagnosis-related groups (DRGs).

The base payment rate is comprised of a standardized amount that is divided Start Printed Page 51482into a labor-related share and a nonlabor-related share. The labor-related share is adjusted by the wage index applicable to the area where the hospital is located. If the hospital is located in Alaska or Hawaii, the nonlabor-related share is adjusted by a cost-of-living adjustment factor. This base payment rate is multiplied by the DRG relative weight.

If the hospital treats a high percentage of certain low-income patients, it receives a percentage add-on payment applied to the DRG-adjusted base payment rate. This add-on payment, known as the disproportionate share hospital (DSH) adjustment, provides for a percentage increase in Medicare payments to hospitals that qualify under either of two statutory formulas designed to identify hospitals that serve a disproportionate share of low-income patients. For qualifying hospitals, the amount of this adjustment varies based on the outcome of the statutory calculations.

If the hospital is an approved teaching hospital, it receives a percentage add-on payment for each case paid under the IPPS, known as the indirect medical education (IME) adjustment. This percentage varies, depending on the ratio of residents to beds.

Additional payments may be made for cases that involve new technologies or medical services that have been approved for special add-on payments. To qualify, a new technology or medical service must demonstrate that it is a substantial clinical improvement over technologies or services otherwise available, and that, absent an add-on payment, it would be inadequately paid under the regular DRG payment.

The costs incurred by the hospital for a case are evaluated to determine whether the hospital is eligible for an additional payment as an outlier case. This additional payment is designed to protect the hospital from large financial losses due to unusually expensive cases. Any eligible outlier payment is added to the DRG-adjusted base payment rate, plus any DSH, IME, and new technology or medical service add-on adjustments.

Although payments to most hospitals under the IPPS are made on the basis of the standardized amounts, some categories of hospitals are paid in whole or in part based on their hospital-specific rate, which is determined from their costs in a base year. For example, sole community hospitals (SCHs) receive the higher of a hospital-specific rate based on their costs in a base year (the highest of FY 1982, FY 1987, FY 1996, or FY 2006) or the IPPS Federal rate based on the standardized amount. Through and including FY 2006, a Medicare-dependent, small rural hospital (MDH) received the higher of the Federal rate or the Federal rate plus 50 percent of the amount by which the Federal rate is exceeded by the higher of its FY 1982 or FY 1987 hospital-specific rate. As discussed below, for discharges occurring on or after October 1, 2007, but before October 1, 2012, an MDH will receive the higher of the Federal rate or the Federal rate plus 75 percent of the amount by which the Federal rate is exceeded by the highest of its FY 1982, FY 1987, or FY 2002 hospital-specific rate. SCHs are the sole source of care in their areas, and MDHs are a major source of care for Medicare beneficiaries in their areas. Specifically, section 1886(d)(5)(D)(iii) of the Act defines an SCH as a hospital that is located more than 35 road miles from another hospital or that, by reason of factors such as isolated location, weather conditions, travel conditions, or absence of other like hospitals (as determined by the Secretary), is the sole source of hospital inpatient services reasonably available to Medicare beneficiaries. In addition, certain rural hospitals previously designated by the Secretary as essential access community hospitals are considered SCHs. Section 1886(d)(5)(G)(iv) of the Act defines an MDH as a hospital that is located in a rural area, has not more than 100 beds, is not an SCH, and has a high percentage of Medicare discharges (not less than 60 percent of its inpatient days or discharges in its cost reporting year beginning in FY 1987 or in two of its three most recently settled Medicare cost reporting years). Both of these categories of hospitals are afforded this special payment protection in order to maintain access to services for beneficiaries.

Section 1886(g) of the Act requires the Secretary to pay for the capital-related costs of inpatient hospital services “in accordance with a prospective payment system established by the Secretary.” The basic methodology for determining capital prospective payments is set forth in our regulations at 42 CFR 412.308 and 412.312. Under the capital IPPS, payments are adjusted by the same DRG for the case as they are under the operating IPPS. Capital IPPS payments are also adjusted for IME and DSH, similar to the adjustments made under the operating IPPS. In addition, hospitals may receive outlier payments for those cases that have unusually high costs.

The existing regulations governing payments to hospitals under the IPPS are located in 42 CFR Part 412, Subparts A through M.

2. Hospitals and Hospital Units Excluded From the IPPS

Under section 1886(d)(1)(B) of the Act, as amended, certain hospitals and hospital units are excluded from the IPPS. These hospitals and units are: Rehabilitation hospitals and units; long-term care hospitals (LTCHs); psychiatric hospitals and units; children's hospitals; and cancer hospitals. Religious nonmedical health care institutions (RNHCIs) are also excluded from the IPPS. Various sections of the Balanced Budget Act of 1997 (BBA, Public Law 105-33), the Medicare, Medicaid and SCHIP [State Children's Health Insurance Program] Balanced Budget Refinement Act of 1999 (BBRA, Pub. L. 106-113), and the Medicare, Medicaid, and SCHIP Benefits Improvement and Protection Act of 2000 (BIPA, Pub. L. 106-554) provide for the implementation of PPSs for rehabilitation hospitals and units (referred to as inpatient rehabilitation facilities (IRFs)), LTCHs, and psychiatric hospitals and units (referred to as inpatient psychiatric facilities (IPFs)). (We note that the annual updates to the LTCH PPS are now included as part of the IPPS annual update document. Updates to the IRF PPS and IPF PPS are issued as separate documents.) Children's hospitals, cancer hospitals, and RNHCIs continue to be paid solely under a reasonable cost-based system subject to a rate-of-increase ceiling on inpatient operating costs per discharge.

The existing regulations governing payments to excluded hospitals and hospital units are located in 42 CFR Parts 412 and 413.

3. Long-Term Care Hospital Prospective Payment System (LTCH PPS)

The Medicare prospective payment system (PPS) for LTCHs applies to hospitals described in section 1886(d)(1)(B)(iv) effective for cost reporting periods beginning on or after October 1, 2002. The LTCH PPS was established under the authority of sections 123(a) and (c) of Public Law 106-113 and section 307(b)(1) of Public Law 106-554 (as codified under section 1886(m)(1) of the Act). During the 5-year (optional) transition period, a LTCH's payment under the PPS was based on an increasing proportion of the LTCH Federal rate with a corresponding decreasing proportion based on reasonable cost principles. Effective for cost reporting periods beginning on or after October 1, 2006, all LTCHs are paid 100 percent of the Federal rate. The existing regulations governing payment under the LTCH PPS are located in 42 CFR Part 412, Subpart O. Beginning Start Printed Page 51483October 1, 2009, we issue the annual updates to the LTCH PPS in the same documents that update the IPPS (73 FR 26797 through 26798).

4. Critical Access Hospitals (CAHs)

Under sections 1814(l), 1820, and 1834(g) of the Act, payments are made to critical access hospitals (CAHs) (that is, rural hospitals or facilities that meet certain statutory requirements) for inpatient and outpatient services are generally based on 101 percent of reasonable cost. Reasonable cost is determined under the provisions of section 1861(v)(1)(A) of the Act and existing regulations under 42 CFR Parts 413 and 415.

5. Payments for Graduate Medical Education (GME)

Under section 1886(a)(4) of the Act, costs of approved educational activities are excluded from the operating costs of inpatient hospital services. Hospitals with approved graduate medical education (GME) programs are paid for the direct costs of GME in accordance with section 1886(h) of the Act. The amount of payment for direct GME costs for a cost reporting period is based on the hospital's number of residents in that period and the hospital's costs per resident in a base year. The existing regulations governing payments to the various types of hospitals are located in 42 CFR Part 413.

B. Provisions of the Patient Protection and Affordable Care Act (Pub. L. 111-148) and the Health Care and Education Reconciliation Act of 2010 (Pub. L. 111-152) Applicable to FY 2012

The Patient Protection and Affordable Care Act (Pub. L. 111-148), enacted on March 23, 2010, and the Health Care and Education Reconciliation Act of 2010 (Pub. L. 111-152), enacted on March 30, 2010, made a number of changes that affect the IPPS and the LTCH PPS. (Pub. L. 111-148 and Pub. L. 111-152 are collectively referred to as the “Affordable Care Act.”) A number of the provisions of the Affordable Care Act affect the updates to the IPPS and the LTCH PPS and providers and suppliers. The provisions of the Affordable Care Act that were applicable to the IPPS and the LTCH PPS for FYs 2010 and 2011 were implemented in the following documents:

On June 2, 2010, we issued in the Federal Register a notice (75 FR 31118) that contained the final wage indices, hospital reclassifications, payment rates, impacts, and other related tables, effective for the FY 2010 IPPS and the RY 2010 LTCH PPS, which were required by or directly resulted from implementation of provisions of the Affordable Care Act.

On August 16, 2010, we issued in the Federal Register a final rule (75 FR 50042) that implemented provisions of the Affordable Care Act applicable to the IPPS and LTCH/PPS for FY 2011.

In this final rule, we are implementing the following provisions (or portions of the following provisions) of the Affordable Care Act that are applicable to the IPPS and LTCH PPS for FY 2012:

  • Section 3001 of Public Law 111-148, which provides for establishment of a hospital value-based purchasing program and applicable measures for value-based incentive payments with respect to discharges occurring during FY 2013.
  • Section 3004 of Public Law 111-148, which provides for the submission of quality data for LTCHs beginning in FY 2013 in order to receive the full annual update to the payment rates beginning with FY 2014 and the establishment of quality data measures by FY 2012 for the FY 2014 payment determination.
  • Section 3025 of Public Law 111-148, which provides for a hospital readmissions reduction program and related quality data reporting measures.
  • Section 3124 of Public Law 111-148, which provides for extension of the Medicare-dependent, small rural hospital (MDH) program through FY 2012.
  • Section 3401 of Public Law 111-148, which provides for the incorporation of productivity improvements into the market basket updates for IPPS hospitals and LTCHs.

In addition, we are continuing in FY 2012 to implement the following provisions, which were initiated in FY 2011:

  • Section 10324 of Public Law 111-148, which provided for a wage adjustment for hospitals located in frontier States.
  • Sections 3401 and 10319 of Public Law 111-148 and section 1105 of Public Law 111-152, which revise certain market basket update percentages for IPPS and LTCH PPS payment rates for FY 2012.
  • Sections 3125 and 10314 of Public Law 111-148, which provide for temporary percentage increases in payment adjustments to low-volume hospitals for discharges occurring in FY 2012.
  • Section 1109 of Public Law 111-152, which provides for additional payments in FY 2012 for qualifying hospitals in the lowest quartile of per capita Medicare spending.
  • Section 5503 of Public Law 111-148, as amended by Public Law 111-152 and section 203 of Public Law 111-309, which provides for the reduction in FTE resident caps for direct GME under Medicare for certain hospitals, and to authorize the “redistribution” of the estimated number of FTE resident slots to other qualified hospitals. In addition, section 5503 requires the application of these provisions to IME in the same manner as the FTE resident caps for direct GME.

C. Issuance of a Notice of Proposed Rulemaking

The May 5, 2011 Federal Register (76 FR 25788) included the proposed rule that set forth proposed changes to the Medicare IPPS for operating costs and for capital-related costs of acute care hospitals in FY 2012. We also set forth proposed changes relating to payments for IME costs and payments to certain hospitals that continue to be excluded from the IPPS and paid on a reasonable cost basis. In addition, we set forth proposed changes to the payment rates, factors, and other payment rate policies under the LTCH PPS for FY 2012.

Below is a summary of the major changes that we proposed to make:

1. Proposed Changes to MS-DRG Classifications and Recalibrations of Relative Weights

In section II. of the preamble of the proposed rule, we included—

  • Proposed changes to MS-DRG classifications based on our yearly review.
  • Proposed application of the documentation and coding adjustment for FY 2012 resulting from implementation of the MS-DRG system.
  • A discussion of the Research Triangle Institute, International (RTI) reports and recommendations relating to charge compression.
  • Proposed recalibrations of the MS-DRG relative weights.
  • Proposed changes to hospital-acquired conditions (HACs) and a listing and discussion of HACs, including infections, that would be subject to the statutorily required quality adjustment in MS-DRG payments for FY 2012.

We discussed the FY 2012 status of new technologies approved for add-on payments for FY 2011 and presented our evaluation and analysis of the FY 2012 applicants for add-on payments for high-cost new medical services and technologies (including public input, as directed by Public Law 108-173, obtained in a town hall meeting).Start Printed Page 51484

2. Proposed Changes to the Hospital Wage Index for Acute Care Hospitals

In section III. of the preamble to the proposed rule, we proposed revisions to the wage index for acute care hospitals and the annual update of the wage data. Specific issues addressed included the following:

  • The proposed FY 2012 wage index update using wage data from cost reporting periods beginning in FY 2008.
  • Analysis and implementation of the proposed FY 2012 occupational mix adjustment to the wage index for acute care hospitals, including discussion of the 2010 occupational mix survey.
  • A proposal to change the reporting requirements for pension costs for the Medicare wage index.
  • Proposed revisions to the wage index for acute care hospitals based on hospital redesignations and reclassifications.
  • The proposed adjustment to the wage index for acute care hospitals for FY 2012 based on commuting patterns of hospital employees who reside in a county and work in a different area with a higher wage index.
  • The timetable for reviewing and verifying the wage data used to compute the proposed FY 2012 hospital wage index.
  • Determination of the labor-related share for the proposed FY 2012 wage index.

3. Other Decisions and Proposed Changes to the IPPS for Operating Costs and GME Costs

In section IV. of the preamble of the proposed rule, we discussed a number of the provisions of the regulations in 42 CFR Parts 412, 413, and 476, including the following:

  • The reporting of hospital quality data under the Hospital Inpatient Quality Reporting (IQR) Program as a condition for receiving the full annual payment update increase.
  • The proposed implementation of the Hospital Value-Based Purchasing Program measures.
  • The proposed establishment of hospital readmission measures for reporting of hospital quality data.
  • The proposed updated national and regional case-mix values and discharges for purposes of determining RRC status.
  • The statutorily required IME adjustment factor for FY 2012.
  • Proposed payment adjustment for low-volume hospitals.
  • Proposal for counting hospice days in the formula for determining the payment adjustment for disproportionate share hospitals.
  • Proposal for making additional payments for qualifying hospitals with lowest per enrollee Medicare spending for FY 2012.
  • Proposal to clarify ESRD add-on payment requirements based on cost report requirements.
  • Proposal relating to changes to the reporting requirements for pension costs for Medicare cost-finding purposes.
  • Proposal to implement statutory change to the hospital payment update, including incorporation of a productivity adjustment.
  • Discussion of the Rural Community Hospital Demonstration Program and a proposal for making a budget neutrality adjustment for the demonstration program.
  • Discussion of August 2010 interim final rule with comment period and further proposed changes relating to the 3-day payment window for payments for services provided to outpatients who are later admitted as inpatients.

4. Proposed FY 2012 Policy Governing the IPPS for Capital-Related Costs

In section V. of the preamble to the proposed rule, we discussed the proposed payment policy requirements for capital-related costs and capital payments to hospitals for FY 2012 and the proposed MS-DRG documentation and coding adjustment for FY 2012.

5. Proposed Changes to the Payment Rates for Certain Excluded Hospitals: Rate-of-Increase Percentages

In section VI. of the preamble of the proposed rule, we discussed proposed changes to payments to certain excluded hospitals. In addition, we discussed proposed changes relating to payment for TEFRA services furnished under arrangements and payment for ambulance services furnished by CAH-owned and operated entities.

6. Proposed Changes to the LTCH PPS

In section VII. of the preamble of the proposed rule, we set forth proposed changes to the payment rates, factors, and other payment rate policies under the LTCH PPS for FY 2012, including the annual update of the MS-LTC-DRG classifications and relative weights for use under the LTCH PPS for FY 2012 and the proposed rebasing and revising of the market basket for LTCHs. In addition, we set forth proposals for implementing the quality data reporting program for LTCHs. We also proposed to clarify two policies regarding the calculation of the average length of stay requirement for LTCHs, and proposed a policy to address a LTCH moratorium issue.

7. Determining Proposed Prospective Payment Operating and Capital Rates and Rate-of-Increase Limits for Acute Care Hospitals

In the Addendum to the proposed rule, we set forth proposed changes to the amounts and factors for determining the proposed FY 2012 prospective payment rates for operating costs and capital-related costs for acute care hospitals. We also proposed to establish the threshold amounts for outlier cases. In addition, we addressed the proposed update factors for determining the rate-of-increase limits for cost reporting periods beginning in FY 2012 for certain hospitals excluded from the IPPS.

8. Determining Proposed Prospective Payment Rates for LTCHs

In the Addendum to the proposed rule, we set forth proposed changes to the amounts and factors for determining the proposed FY 2012 prospective standard Federal rate. We also proposed to establish the proposed adjustments for wage levels, the labor-related share, the cost-of-living adjustment, and high-cost outliers, including the fixed-loss amount, and the LTCH cost-to-charge ratios (CCRs) under the LTCH PPS.

9. Impact Analysis

In Appendix A of the proposed rule, we set forth an analysis of the impact that the proposed changes would have on affected acute care hospitals and LTCHs.

10. Recommendation of Update Factors for Operating Cost Rates of Payment for Hospital Inpatient Services

In Appendix B of the proposed rule, as required by sections 1886(e)(4) and (e)(5) of the Act, we provided our recommendations of the appropriate percentage changes for FY 2012 for the following:

  • A single average standardized amount for all areas for hospital inpatient services paid under the IPPS for operating costs of acute care hospitals (and hospital-specific rates applicable to SCHs and MDHs).
  • Target rate-of-increase limits to the allowable operating costs of hospital inpatient services furnished by certain hospitals excluded from the IPPS.
  • The standard Federal rate for hospital inpatient services furnished by LTCHs.

11. Discussion of Medicare Payment Advisory Commission Recommendations

Under section 1805(b) of the Act, MedPAC is required to submit a report to Congress, no later than March 1 of each year, in which MedPAC reviews Start Printed Page 51485and makes recommendations on Medicare payment policies. MedPAC's March 2011 recommendations concerning hospital inpatient payment policies address the update factor for hospital inpatient operating costs and capital-related costs under the IPPS, for hospitals and distinct part hospital units excluded from the IPPS. We addressed these recommendations in Appendix B of the proposed rule. For further information relating specifically to the MedPAC March 2011 report or to obtain a copy of the report, contact MedPAC at (202) 220-3700 or visit MedPAC's Web site at: http://www.medpac.gov.

D. Public Comments Received in Response to the FY 2012 IPPS/LTCH PPS Proposed Rule

We received approximately 385 timely pieces of correspondence containing multiple comments on the FY 2012 IPPS/LTCH PPS proposed rule. We note that some of these public comments were outside of the scope of the proposed rule. These out-of-scope public comments are not addressed with policy responses in this final rule. Summaries of the public comments that are within the scope of the proposed rule and our responses to those comments are set forth in the various sections of this final rule under the appropriate heading.

E. Finalization of Interim Final Rule With Comment Period on Revisions to the Reductions and Increases to Hospitals' FTE Resident Caps for Graduate Medical Education Payment Purposes

On March 14, 2011, we issued in the Federal Register (76 FR 13515) an interim final rule with comment period to implement section 203 of the Medicare and Medicaid Extenders Act of 2010 (MMEA), Public Law 111-309, relating to the treatment of teaching hospitals that are members of the same Medicare graduate medical education (GME) affiliated groups for the purpose of determining possible full-time equivalent (FTE) resident cap reductions. We received nine timely pieces of correspondence in response this interim final rule with comment period. In section IV.R. of this document, we are summarizing and responding to these public comments and are finalizing the policies contained in the interim final rule with comment period without modification.

II. Changes to Medicare Severity Diagnosis-Related Group (MS-DRG) Classifications and Relative Weights

A. Background

Section 1886(d) of the Act specifies that the Secretary shall establish a classification system (referred to as DRGs) for inpatient discharges and adjust payments under the IPPS based on appropriate weighting factors assigned to each DRG. Therefore, under the IPPS, Medicare pays for inpatient hospital services on a rate per discharge basis that varies according to the DRG to which a beneficiary's stay is assigned. The formula used to calculate payment for a specific case multiplies an individual hospital's payment rate per case by the weight of the DRG to which the case is assigned. Each DRG weight represents the average resources required to care for cases in that particular DRG, relative to the average resources used to treat cases in all DRGs.

Congress recognized that it would be necessary to recalculate the DRG relative weights periodically to account for changes in resource consumption. Accordingly, section 1886(d)(4)(C) of the Act requires that the Secretary adjust the DRG classifications and relative weights at least annually. These adjustments are made to reflect changes in treatment patterns, technology, and any other factors that may change the relative use of hospital resources.

B. MS-DRG Reclassifications

1. General

As discussed in the preamble to the FY 2008 IPPS final rule with comment period (72 FR 47138), we focused our efforts in FY 2008 on making significant reforms to the IPPS consistent with the recommendations made by MedPAC in its “Report to the Congress, Physician-Owned Specialty Hospitals” in March 2005. MedPAC recommended that the Secretary refine the entire DRG system by taking severity of illness into account and applying hospital-specific relative value (HSRV) weights to DRGs.[1] We began this reform process by adopting cost-based weights over a 3-year transition period beginning in FY 2007 and making interim changes to the DRG system for FY 2007 by creating 20 new CMS DRGs and modifying 32 other DRGs across 13 different clinical areas involving nearly 1.7 million cases. As described in more detail below, these refinements were intermediate steps towards comprehensive reform of both the relative weights and the DRG system as we undertook further study. For FY 2008, we adopted 745 new Medicare Severity DRGs (MS-DRGs) to replace the CMS DRGs. We refer readers to section II.D. of the FY 2008 IPPS final rule with comment period for a full detailed discussion of how the MS-DRG system, based on severity levels of illness, was established (72 FR 47141).

Currently, cases are classified into MS-DRGs for payment under the IPPS based on the following information reported by the hospital: The principal diagnosis, up to eight additional diagnoses, and up to six procedures performed during the stay. (We refer readers to section II.G.11.c. of this final rule for a discussion of our efforts to increase our internal systems capacity to process diagnosis and procedures on hospital claims to 25 diagnosis codes and 25 procedure codes prior to the use of the International Classification of Diseases, 10th Revision, Clinical Modification (ICD-10-CM) for diagnosis coding and the International Classification of Diseases, 10th Revision, Procedure Coding System (ICD-10 PCS) for inpatient hospital procedure coding, effective October 1, 2013.) In a small number of MS-DRGs, classification is also based on the age, sex, and discharge status of the patient. The diagnosis and procedure information is reported by the hospital using codes from the International Classification of Diseases, Ninth Revision, Clinical Modification (ICD-9-CM) prior to October 1, 2013. We refer readers to section II.G.11.b. of this final rule for a reference to the replacement of ICD-9-CM, Volumes 1 and 2, including the Official ICD-9-CM Guidelines for Coding and Reporting, Volume 3, with the ICD-10-CM and ICD-10-PCS, including the Official ICD-10-CM and ICD-10-PCS Guidelines for Coding and Reporting, effective October 1, 2013 (FY 2014).

The process of developing the MS-DRGs was begun by dividing all possible principal diagnoses into mutually exclusive principal diagnosis areas, referred to as Major Diagnostic Categories (MDCs). The MDCs were formulated by physician panels to ensure that the DRGs would be clinically coherent. The diagnoses in each MDC correspond to a single organ system or etiology and, in general, are associated with a particular medical specialty. Thus, in order to maintain the requirement of clinical coherence, no final MS-DRG could contain patients in different MDCs. For example, MDC 6 is Diseases and Disorders of the Digestive System. This approach is used because clinical care is generally organized in Start Printed Page 51486accordance with the organ system affected. However, some MDCs are not constructed on this basis because they involve multiple organ systems (for example, MDC 22 (Burns)). For FY 2012, cases will be assigned to one of 751 MS-DRGs in 25 MDCs. The table below lists the 25 MDCs.

Major Diagnostic Categories

[MDCs]

1Diseases and Disorders of the Nervous System.
2Diseases and Disorders of the Eye.
3Diseases and Disorders of the Ear, Nose, Mouth, and Throat.
4Diseases and Disorders of the Respiratory System.
5Diseases and Disorders of the Circulatory System.
6Diseases and Disorders of the Digestive System.
7Diseases and Disorders of the Hepatobiliary System and Pancreas.
8Diseases and Disorders of the Musculoskeletal System and Connective Tissue.
9Diseases and Disorders of the Skin, Subcutaneous Tissue and Breast.
10Endocrine, Nutritional and Metabolic Diseases and Disorders.
11Diseases and Disorders of the Kidney and Urinary Tract.
12Diseases and Disorders of the Male Reproductive System.
13Diseases and Disorders of the Female Reproductive System.
14Pregnancy, Childbirth, and the Puerperium.
15Newborns and Other Neonates with Conditions Originating in the Perinatal Period.
16Diseases and Disorders of the Blood and Blood Forming Organs and Immunological Disorders.
17Myeloproliferative Diseases and Disorders and Poorly Differentiated Neoplasms.
18Infectious and Parasitic Diseases (Systemic or Unspecified Sites).
19Mental Diseases and Disorders.
20Alcohol/Drug Use and Alcohol/Drug Induced Organic Mental Disorders.
21Injuries, Poisonings, and Toxic Effects of Drugs.
22Burns.
23Factors Influencing Health Status and Other Contacts with Health Services.
24Multiple Significant Trauma.
25Human Immunodeficiency Virus Infections.

In general, cases are assigned to an MDC based on the patient's principal diagnosis before assignment to an MS-DRG. However, under the most recent version of the Medicare GROUPER (Version 28.0), there are 13 MS-DRGs to which cases are directly assigned on the basis of ICD-9-CM procedure codes. These MS-DRGs are for heart transplant or implant of heart assist systems; liver and/or intestinal transplants; bone marrow transplants; lung transplants; simultaneous pancreas/kidney transplants; pancreas transplants; and tracheostomies. Cases are assigned to these MS-DRGs before they are classified to an MDC. The table below lists the 13 current pre-MDCs.

Pre-Major Diagnostic Categories

[Pre-MDCs]

MS-DRG 001Heart Transplant or Implant of Heart Assist System with MCC.
MS-DRG 002Heart Transplant or Implant of Heart Assist System without MCC.
MS-DRG 003ECMO or Tracheostomy with Mechanical Ventilation 96+ Hours or Principal Diagnosis Except for Face, Mouth, and Neck Diagnosis with Major O.R.
MS-DRG 004Tracheostomy with Mechanical Ventilation 96+ Hours or Principal Diagnosis Except for Face, Mouth, and Neck Diagnosis with Major O.R.
MS-DRG 005Liver Transplant with MCC or Intestinal Transplant.
MS-DRG 006Liver Transplant without MCC.
MS-DRG 007Lung Transplant.
MS-DRG 008Simultaneous Pancreas/Kidney Transplant.
MS-DRG 009Bone Marrow Transplant.
MS-DRG 010Pancreas Transplant.
MS-DRG 011Tracheostomy for Face, Mouth, and Neck Diagnoses with MCC.
MS-DRG 012Tracheostomy for Face, Mouth, and Neck Diagnoses with CC.
MS-DRG 013Tracheostomy for Face, Mouth, and Neck Diagnoses without CC/MCC.

Once the MDCs were defined, each MDC was evaluated to identify those additional patient characteristics that would have a consistent effect on hospital resource consumption. Because the presence of a surgical procedure that required the use of the operating room would have a significant effect on the type of hospital resources used by a patient, most MDCs were initially divided into surgical DRGs and medical DRGs. Surgical DRGs are based on a hierarchy that orders operating room (O.R.) procedures or groups of O.R. procedures by resource intensity. Medical DRGs generally are differentiated on the basis of diagnosis and age (0 to 17 years of age or greater than 17 years of age). Some surgical and medical DRGs are further differentiated based on the presence or absence of a complication or comorbidity (CC) or a major complication or comorbidity (MCC).

Generally, nonsurgical procedures and minor surgical procedures that are not usually performed in an operating room are not treated as O.R. procedures. However, there are a few non-O.R. procedures that do affect MS-DRG Start Printed Page 51487assignment for certain principal diagnoses. An example is extracorporeal shock wave lithotripsy for patients with a principal diagnosis of urinary stones. Lithotripsy procedures are not routinely performed in an operating room. Therefore, lithotripsy codes are not classified as O.R. procedures. However, our clinical advisors believe that patients with urinary stones who undergo extracorporeal shock wave lithotripsy should be considered similar to other patients who undergo O.R. procedures. Therefore, we treat this group of patients similar to patients undergoing O.R. procedures.

Once the medical and surgical classes for an MDC were formed, each diagnosis class was evaluated to determine if complications or comorbidities would consistently affect hospital resource consumption. Each diagnosis was categorized into one of three severity levels. These three levels include a major complication or comorbidity (MCC), a complication or comorbidity (CC), or a non-CC. Physician panels classified each diagnosis code based on a highly iterative process involving a combination of statistical results from test data as well as clinical judgment. As stated earlier, we refer readers to section II.D. of the FY 2008 IPPS final rule with comment period for a full detailed discussion of how the MS-DRG system was established based on severity levels of illness (72 FR 47141).

A patient's diagnosis, procedure, discharge status, and demographic information is entered into the Medicare claims processing systems and subjected to a series of automated screens called the Medicare Code Editor (MCE). The MCE screens are designed to identify cases that require further review before classification into an MS-DRG.

After patient information is screened through the MCE and further development of the claim is conducted, the cases are classified into the appropriate MS-DRG by the Medicare GROUPER software program. The GROUPER program was developed as a means of classifying each case into an MS-DRG on the basis of the diagnosis and procedure codes and, for a limited number of MS-DRGs, demographic information (that is, sex, age, and discharge status).

After cases are screened through the MCE and assigned to an MS-DRG by the GROUPER, the PRICER software calculates a base MS-DRG payment. The PRICER calculates the payment for each case covered by the IPPS based on the MS-DRG relative weight and additional factors associated with each hospital, such as IME and DSH payment adjustments. These additional factors increase the payment amount to hospitals above the base MS-DRG payment.

The records for all Medicare hospital inpatient discharges are maintained in the Medicare Provider Analysis and Review (MedPAR) file. The data in this file are used to evaluate possible MS-DRG classification changes and to recalibrate the MS-DRG weights. However, in the FY 2000 IPPS final rule (64 FR 41499 and 41500), we discussed a process for considering non-MedPAR data in the recalibration process. We stated that for use of non-MedPAR data to be feasible for purposes of DRG recalibration and reclassification, the data must, among other things: (1) Be independently verified; (2) reflect a complete set of cases (or a representative sample of cases); and (3) enable us to calculate appropriate DRG relative weights and ensure that cases are classified to the “correct” DRG, and to one DRG only, in the recalibration process. Further, in order for us to consider using particular non-MedPAR data, we must have sufficient time to evaluate and test the data. The time necessary to do so depend upon the nature and quality of the non-MedPAR data submitted. Generally, however, a significant sample of the non-MedPAR data should be submitted by mid-October for consideration in conjunction with the next year's proposed rule. This date allows us time to test the data and make a preliminary assessment as to the feasibility of using the data. Subsequently, a complete non-MedPAR database should be submitted by early December for consideration in conjunction with the next year's proposed rule.

As we indicated above, for FY 2008, we made significant improvements in the DRG system to recognize severity of illness and resource usage by adopting MS-DRGs that were reflected in the FY 2008 GROUPER, Version 25.0, and were effective for discharges occurring on or after October 1, 2007. Our MS-DRG analysis for the FY 2012 proposed rule was based on data from the September 2010 update of the FY 2010 MedPAR file, which contained hospital bills received through September 30, 2010, for discharges occurring through September 30, 2010. For this FY 2012 final rule, our MS-DRG analysis is based on data from the March 2011 update of the FY 2010 MedPAR file, which contained hospital bills received through March 31, 2011, for discharges occurring through September 30, 2010.

2. Yearly Review for Making MS-DRG Changes

Many of the changes to the MS-DRG classifications we make annually are the result of specific issues brought to our attention by interested parties. We encourage individuals with comments about MS-DRG classifications to submit these comments no later than early December of each year so they can be carefully considered for possible inclusion in the annual proposed rule and, if included, may be subjected to public review and comment. Therefore, similar to the timetable for interested parties to submit non-MedPAR data for consideration in the MS-DRG recalibration process, comments about MS-DRG classification issues should be submitted no later than early December in order to be considered and possibly included in the next annual proposed rule updating the IPPS.

The actual process of forming the MS-DRGs was, and will likely continue to be, highly iterative, involving a combination of statistical results from test data combined with clinical judgment. In the FY 2008 IPPS final rule (72 FR 47140 through 47189), we described in detail the process we used to develop the MS-DRGs that we adopted for FY 2008. In addition, in deciding whether to make further modification to the MS-DRGs for particular circumstances brought to our attention, we considered whether the resource consumption and clinical characteristics of the patients with a given set of conditions are significantly different than the remaining patients in the MS-DRG. We evaluated patient care costs using average charges and lengths of stay as proxies for costs and relied on the judgment of our medical advisors to decide whether patients are clinically distinct or similar to other patients in the MS-DRG. In evaluating resource costs, we considered both the absolute and percentage differences in average charges between the cases we selected for review and the remainder of cases in the MS-DRG. We also considered variation in charges within these groups; that is, whether observed average differences were consistent across patients or attributable to cases that were extreme in terms of charges or length of stay, or both. Further, we considered the number of patients who will have a given set of characteristics and generally preferred not to create a new MS-DRG unless it would include a substantial number of cases.

C. Adoption of the MS-DRGs in FY 2008

In the FY 2006, FY 2007, and FY 2008 IPPS final rules, we discussed a number Start Printed Page 51488of recommendations made by MedPAC regarding revisions to the DRG system used under the IPPS (70 FR 47473 through 47482; 71 FR 47881 through 47939; and 72 FR 47140 through 47189). As we noted in the FY 2006 IPPS final rule, we had insufficient time to complete a thorough evaluation of these recommendations for full implementation in FY 2006. However, we did adopt severity-weighted cardiac DRGs in FY 2006 to address public comments on this issue and the specific concerns of MedPAC regarding cardiac surgery DRGs. We also indicated that we planned to further consider all of MedPAC's recommendations and thoroughly analyze options and their impacts on the various types of hospitals in the FY 2007 IPPS proposed rule.

For FY 2007, we began this process. In the FY 2007 IPPS proposed rule, we proposed to adopt Consolidated Severity DRGs (CS DRGs) for FY 2008 (if not earlier). Based on public comments received on the FY 2007 IPPS proposed rule, we decided not to adopt the CS DRGs. In the FY 2007 IPPS final rule (71 FR 47906 through 47912), we discussed several concerns raised by public commenters regarding the proposal to adopt CS DRGs. We acknowledged the many public comments suggesting the logic of Medicare's DRG system should continue to remain in the public domain as it has since the inception of the PPS. We also acknowledged concerns about the impact on hospitals and software vendors of moving to a proprietary system. Several commenters suggested that CMS refine the existing DRG classification system to preserve the many policy decisions that were made over the last 20 years and were already incorporated into the DRG system, such as complexity of services and new device technologies. Consistent with the concerns expressed in the public comments, this option had the advantage of using the existing DRGs as a starting point (which was already familiar to the public) and retained the benefit of many DRG decisions that were made in recent years. We stated our belief that the suggested approach of incorporating severity measures into the existing DRG system was a viable option that would be evaluated.

Therefore, we decided to make interim changes to the existing DRGs for FY 2007 by creating 20 new DRGs involving 13 different clinical areas that would significantly improve the CMS DRG system's recognition of severity of illness. We also modified 32 DRGs to better capture differences in severity. The new and revised DRGs were selected from 40 existing CMS DRGs that contained 1,666,476 cases and represented a number of body systems. In creating these 20 new DRGs, we deleted 8 existing DRGs and modified 32 existing DRGs. We indicated that these interim steps for FY 2007 were being taken as a prelude to more comprehensive changes to better account for severity in the DRG system by FY 2008.

In the FY 2007 IPPS final rule (71 FR 47898), we indicated our intent to pursue further DRG reform through two initiatives. First, we announced that we were in the process of engaging a contractor to assist us with evaluating alternative DRG systems that were raised as potential alternatives to the CMS DRGs in the public comments. Second, we indicated our intent to review over 13,000 ICD-9-CM diagnosis codes as part of making further refinements to the current CMS DRGs to better recognize severity of illness based on the work that CMS (then HCFA) did in the mid-1990's in connection with adopting severity DRGs. We describe below the progress we have made on these two initiatives and our actions for FYs 2008, 2009, 2010, and 2011, and our proposed and final actions for FY 2012 based on our continued analysis of reform of the DRG system. We note that the adoption of the MS-DRGs to better recognize severity of illness has implications for the outlier threshold, the application of the postacute care transfer policy, the measurement of real case-mix versus apparent case-mix, and the IME and DSH payment adjustments. We discuss these implications for FY 2012 in other sections of this preamble and in the Addendum to this final rule.

In the FY 2007 IPPS proposed rule, we discussed MedPAC's recommendations to move to a cost-based HSRV weighting methodology using HSRVs beginning with the FY 2007 IPPS proposed rule for determining the DRG relative weights. Although we proposed to adopt the HSRV weighting methodology for FY 2007, we decided not to adopt the proposed methodology in the final rule after considering the public comments we received on the proposal. Instead, in the FY 2007 IPPS final rule, we adopted a cost-based weighting methodology without the HSRV portion of the proposed methodology. The cost-based weights were adopted over a 3-year transition period in 1/3 increments between FY 2007 and FY 2009. In addition, in the FY 2007 IPPS final rule, we indicated our intent to further study the HSRV-based methodology as well as other issues brought to our attention related to the cost-based weighting methodology adopted in the FY 2007 final rule. There was significant concern in the public comments that our cost-based weighting methodology does not adequately account for charge compression—the practice of applying a higher percentage charge markup over costs to lower cost items and services and a lower percentage charge markup over costs to higher cost items and services. Further, public commenters expressed concern about potential inconsistencies between how costs and charges are reported on the Medicare cost reports and charges on the Medicare claims. In the FY 2007 IPPS final rule, we used costs and charges from the cost reports to determine departmental level cost-to-charge ratios (CCRs) which we then applied to charges on the Medicare claims to determine the cost-based weights. The commenters were concerned about potential distortions to the cost-based weights that would result from inconsistent reporting between the cost reports and the Medicare claims. After publication of the FY 2007 IPPS final rule, we entered into a contract with RTI International (RTI) to study both charge compression and the extent, if any, to which our methodology for calculating DRG relative weights is affected by inconsistencies between how hospitals report costs and charges on the cost reports and how hospitals report charges on individual claims. Further, as part of its study of alternative DRG systems, the RAND Corporation analyzed the HSRV cost-weighting methodology. We refer readers to section II.E. of the preamble of this final rule for a discussion of the issue of charge compression and the cost-weighting methodology for FY 2012.

We believe that revisions to the DRG system to better recognize severity of illness and changes to the relative weights based on costs rather than charges are improving the accuracy of the payment rates in the IPPS. We agree with MedPAC that these refinements should be pursued. Although we continue to caution that any prospective payment system based on grouping cases will always present some opportunities for providers to specialize in cases they believe have higher margins, we believe that the changes we have adopted and the continuing reforms we are proposing to make in this proposed rule for FY 2012 will improve payment accuracy and reduce financial incentives to create specialty hospitals.

We refer readers to section II.D. of the FY 2008 IPPS final rule with comment period for a full discussion of how the MS-DRG system was established based Start Printed Page 51489on severity levels of illness (72 FR 47141).

D. FY 2012 MS-DRG Documentation and Coding Adjustment, Including the Applicability to the Hospital-Specific Rates and the Puerto Rico-Specific Standardized Amount

1. Background on the Prospective MS-DRG Documentation and Coding Adjustments for FY 2008 and FY 2009 Authorized by Public Law 110-90

As we discussed earlier in this preamble, we adopted the MS-DRG patient classification system for the IPPS, effective October 1, 2007, to better recognize severity of illness in Medicare payment rates for acute care hospitals. The adoption of the MS-DRG system resulted in the expansion of the number of DRGs from 538 in FY 2007 to 745 in FY 2008. (Currently, there are 751 MS-DRGs, which include 4 additional MS-DRGs that we are adopting for FY 2012.) By increasing the number of MS-DRGs and more fully taking into account patient severity of illness in Medicare payment rates for acute care hospitals, MS-DRGs encourage hospitals to improve their documentation and coding of patient diagnoses.

In the FY 2008 IPPS final rule with comment period (72 FR 47175 through 47186), we indicated that the adoption of the MS-DRGs had the potential to lead to increases in aggregate payments without a corresponding increase in actual patient severity of illness due to the incentives for additional documentation and coding. In that final rule with comment period, we exercised our authority under section 1886(d)(3)(A)(vi) of the Act, which authorizes us to maintain budget neutrality by adjusting the national standardized amount, to eliminate the estimated effect of changes in coding or classification that do not reflect real changes in case-mix. Our actuaries estimated that maintaining budget neutrality required an adjustment of −4.8 percent to the national standardized amount. We provided for phasing in this −4.8 percent adjustment over 3 years. Specifically, we established prospective documentation and coding adjustments of −1.2 percent for FY 2008, −1.8 percent for FY 2009, and −1.8 percent for FY 2010.

On September 29, 2007, Congress enacted the TMA [Transitional Medical Assistance], Abstinence Education, and QI [Qualifying Individuals] Programs Extension Act of 2007, Public Law 110-90. Section 7(a) of Public Law 110-90 reduced the documentation and coding adjustment made as a result of the MS-DRG system that we adopted in the FY 2008 IPPS final rule with comment period to −0.6 percent for FY 2008 and −0.9 percent for FY 2009. Section 7(a) of Public Law 110-90 did not adjust the FY 2010 −1.8 percent documentation and coding adjustment promulgated in the FY 2008 IPPS final rule with comment period. To comply with section 7(a) of Public Law 110-90, we promulgated a final rule on November 27, 2007 (72 FR 66886) that modified the IPPS documentation and coding adjustment for FY 2008 to −0.6 percent, and revised the FY 2008 payment rates, factors, and thresholds accordingly. These revisions were effective on October 1, 2007.

For FY 2009, section 7(a) of Public Law 110-90 required a documentation and coding adjustment of −0.9 percent instead of the −1.8 percent adjustment established in the FY 2008 IPPS final rule with comment period. As discussed in the FY 2009 IPPS final rule (73 FR 48447) and required by statute, we applied a documentation and coding adjustment of −0.9 percent to the FY 2009 IPPS national standardized amount. The documentation and coding adjustments established in the FY 2008 IPPS final rule with comment period, as amended by Public Law 110-90, are cumulative. As a result, the −0.9 percent documentation and coding adjustment for FY 2009 was in addition to the −0.6 percent adjustment for FY 2008, yielding a combined effect of −1.5 percent.

2. Prospective Adjustment to the Average Standardized Amounts Required by Section 7(b)(1)(A) of Public Law 110-90

Section 7(b)(1)(A) of Public Law 110-90 requires that, if the Secretary determines that implementation of the MS-DRG system resulted in changes in documentation and coding that did not reflect real changes in case-mix for discharges occurring during FY 2008 or FY 2009 that are different than the prospective documentation and coding adjustments applied under section 7(a) of Public Law 110-90, the Secretary shall make an appropriate adjustment under section 1886(d)(3)(A)(vi) of the Act. Section 1886(d)(3)(A)(vi) of the Act authorizes adjustments to the average standardized amounts for subsequent fiscal years in order to eliminate the effect of such coding or classification changes. These adjustments are intended to ensure that future annual aggregate IPPS payments are the same as the payments that otherwise would have been made had the prospective adjustments for documentation and coding applied in FY 2008 and FY 2009 reflected the change that occurred in those years.

3. Recoupment or Repayment Adjustments in FYs 2010 Through 2012 Required by Public Law 110-90

If, based on a retroactive evaluation of claims data, the Secretary determines that implementation of the MS-DRG system resulted in changes in documentation and coding that did not reflect real changes in case-mix for discharges occurring during FY 2008 or FY 2009 that are different from the prospective documentation and coding adjustments applied under section 7(a) of Public Law 110-90, section 7(b)(1)(B) of Public Law 110-90 requires the Secretary to make an additional adjustment to the standardized amounts under section 1886(d) of the Act. This adjustment must offset the estimated increase or decrease in aggregate payments for FYs 2008 and 2009 (including interest) resulting from the difference between the estimated actual documentation and coding effect and the documentation and coding adjustment applied under section 7(a) of Public Law 110-90. This adjustment is in addition to making an appropriate adjustment to the standardized amounts under section 1886(d)(3)(A)(vi) of the Act as required by section 7(b)(1)(A) of Public Law 110-90. That is, these adjustments are intended to recoup (or repay, in the case of underpayments) spending in excess of (or less than) spending that would have occurred had the prospective adjustments for changes in documentation and coding applied in FY 2008 and FY 2009 precisely matched the changes that occurred in those years. Public Law 110-90 requires that the Secretary make these recoupment or repayment adjustments for discharges occurring during FYs 2010, 2011, and 2012.

4. Retrospective Evaluation of FY 2008 and FY 2009 Claims Data

In order to implement the requirements of section 7 of Public Law 110-90, we indicated in the FY 2009 IPPS final rule (73 FR 48450) that we planned a thorough retrospective evaluation of our claims data. We stated that the results of this evaluation would be used by our actuaries to determine any necessary payment adjustments to the standardized amounts under section 1886(d) of the Act to ensure the budget neutrality of the MS-DRGs implementation for FY 2008 and FY 2009, as required by law. In the FY 2009 IPPS proposed rule (73 FR 23541 through 23542), we described our preliminary plan for a retrospective analysis of inpatient hospital claims Start Printed Page 51490data and invited public input on our proposed methodology.

In that proposed rule, we indicated that we intended to measure and corroborate the extent of the overall national average changes in case-mix for FY 2008 and FY 2009. We expected that the two largest parts of this overall national average change would be attributable to underlying changes in actual patient severity of illness and to documentation and coding improvements under the MS-DRG system. In order to separate the two effects, we planned to isolate the effect of shifts in cases among base DRGs from the effect of shifts in the types of cases within base DRGs.

The MS-DRGs divide the base DRGs into three severity levels (with MCC, with CC, and without CC); the previously used CMS DRGs had only two severity levels (with CC and without CC). Under the CMS DRG system, the majority of hospital discharges had a secondary diagnosis which was on the CC list, which led to the higher severity level. The MS-DRGs significantly changed the code lists of what was classified as an MCC or a CC. Many codes that were previously classified as a CC are no longer included on the MS-DRG CC list because the data and clinical review showed these conditions did not lead to a significant increase in resource use. The addition of a new level of high severity conditions, the MCC list, also provided a new incentive to code more precisely in order to increase the severity level. We anticipated that hospitals would examine the MS-DRG MCC and CC code lists and then work with physicians and coders on documentation and coding practices so that coders could appropriately assign codes from the highest possible severity level. We note that there have been numerous seminars and training sessions on this particular coding issue. The topic of improving documentation practices in order to code conditions on the MCC list was also discussed extensively by participants at the March 11-12, 2009 ICD-9-CM Coordination and Maintenance Committee meeting. Participants discussed their hospitals' efforts to encourage physicians to provide more precise documentation so that coders could appropriately assign codes that would lead to a higher severity level. Because we expected most of the documentation and coding changes under the MS-DRG system would occur in the secondary diagnoses, we believed that the shifts among base DRGs were less likely to be the result of the MS-DRG system and the shifts within base DRGs were more likely to be the result of the MS-DRG system. We also anticipated evaluating data to identify the specific MS-DRGs and diagnoses that contributed significantly to the documentation and coding payment effect and to quantify their impact. This step entailed analysis of the secondary diagnoses driving the shifts in severity within specific base DRGs.

In the FY 2009 IPPS proposed rule, we solicited public comments on the analysis plans described above, as well as suggestions on other possible approaches for performing a retrospective analysis to identify the amount of case-mix changes that occurred in FY 2008 and FY 2009 that did not reflect real increases in patient severity of illness.

A few commenters, including MedPAC, expressed support for the analytic approach described in the FY 2009 IPPS proposed rule. A number of other commenters expressed concerns about certain aspects of the approach and/or suggested alternate analyses or study designs. In addition, one commenter recommended that any determination or retrospective evaluation by the actuaries of the impact of the MS-DRGs on case-mix be open to public scrutiny prior to the implementation of the payment adjustments beginning in FY 2010.

We took these comments into consideration as we developed our proposed analysis plan, and in the FY 2010 IPPS/RY 2010 LTCH PPS proposed rule (74 FR 24092 through 24101), we solicited public comment on our methodology and analysis. For the FY 2010 IPPS/RY 2010 LTCH PPS proposed rule, we performed a retrospective evaluation of the FY 2008 data for claims paid through December 2008. Based on this evaluation, our actuaries determined that implementation of the MS-DRG system resulted in a 2.5 percent change due to documentation and coding that did not reflect real changes in case-mix for discharges occurring during FY 2008. In the FY 2010 IPPS/RY 2010 LTCH PPS final rule, we updated this analysis with FY 2008 data for claims paid through March 2009, and we noted that the estimates for all IPPS remained essentially the same to those in the proposed rule (42 FR 43770, 43775). Also, in the FY 2010 IPPS/RY 2010 LTCH PPS final rule (74 FR 43768 through 43772), we responded to comments on our methodology for the retrospective evaluation of FY 2008 claims data. We refer readers to that final rule for a detailed description of our analysis and prior responses to comments.

In the FY 2011 IPPS/LTCH PPS final rule (75 FR 50057 through 50068), we performed the same analysis for FY 2009 claims data using the same methodology as we did for FY 2008 claims. We note that, in the FY 2011 IPPS/LTCH PPS proposed rule, we performed this analysis using FY 2009 claims paid through December 2009. In the FY 2011 IPPS/LTCH PPS final rule, we updated the analysis with FY 2009 claims paid through March 2010, as we discussed in the proposed rule. We note that, for all IPPS hospitals, other than those in Puerto Rico, the estimates were unchanged from those in the proposed rule. We refer readers to the FY 2011 IPPS/LTCH PPS final rule (75 FR 50057 through 50068) for a detailed description of our analysis and prior responses to comments. The results of the analysis for the FY 2011 proposed and final rules provided additional support for our conclusion that the proposed 5.4 percent estimate accurately reflected the FY 2009 increases in documentation and coding under the MS-DRG system.

As in prior years, the FY 2008 and FY 2009 MedPAR files are available to the public to allow independent analysis of the FY 2008 and FY 2009 documentation and coding effect. Interested individuals may still order these files through the Web site at: http://www.cms.hhs.gov/​LimitedDataSets/​ by clicking on MedPAR Limited Data Set (LDS)-Hospital (National). This Web page describes the file and provides directions and further detailed instructions for how to order.

Persons placing an order must send the following: A Letter of Request, the LDS Data Use Agreement and Research Protocol (refer to the Web site for further instructions), the LDS Form, and a check for $3,655 to:

Mailing address if using the U.S. Postal Service: Centers for Medicare & Medicaid Services, RDDC Account, Accounting Division, P.O. Box 7520, Baltimore, MD 21207-0520.

Mailing address if using express mail: Centers for Medicare & Medicaid Services, OFM/Division of Accounting—RDDC, 7500 Security Boulevard, C3-07-11, Baltimore, MD 21244-1850.

5. Prospective Adjustment for FY 2010 and Subsequent Years Authorized by Section 7(b)(1)(A) of Public Law 110-90 and Section 1886(d)(3)(vi) of the Act

Based on our evaluation of FY 2008 Medicare claims data that were most current at the time of the FY 2010 IPPS/RY 2010 LTCH PPS proposed rule, the estimated 2.5 percent change in FY 2008 case-mix due to changes in Start Printed Page 51491documentation and coding that did not reflect real changes in case-mix for discharges occurring during FY 2008 exceeded the −0.6 percent prospective documentation and coding adjustment applied under section 7(a) of Public Law 110-90 by 1.9 percentage points. In the FY 2010 IPPS/RY 2010 LTCH PPS proposed rule (74 FR 24096), we solicited public comment on our proposal to make a −1.9 percent prospective adjustment to the standardized amounts under section 1886(d) of the Act to address the effects of documentation and coding changes unrelated to changes in real case-mix in FY 2008. In the FY 2010 IPPS/RY 2010 LTCH PPS final rule, in response to public comments, we indicated that we fully understood that our proposed adjustment of −1.9 percent would reduce the increase in payments that affected hospitals would have received in FY 2009 in the absence of the adjustment, and we determined that it would be appropriate to postpone adopting documentation and coding adjustments as authorized under section 7(a) of Public Law 110-90 and section 1886(d)(3)(A)(vi) of the Act until a full analysis of case-mix changes could be completed. We refer readers to the FY 2010 IPPS/LTCH PPS final rule (74 FR 43767 through 43777) for a detailed description of our proposal, responses to comments, and finalized policy.

After analysis of the FY 2009 claims data for the FY 2011 IPPS/LTCH PPS final rule (75 FR 50057 through 50073), we found a total prospective documentation and coding effect of 1.054. After accounting for the −0.6 percent and the −0.9 percent documentation and coding adjustments in FYs 2008 and 2009, we found a remaining documentation and coding effect of 3.9 percent. As we have discussed, an additional cumulative adjustment of −3.9 percent would be necessary to meet the requirements of section 7(b)(1)(A) of Public Law 110-90 to make an adjustment to the average standardized amounts in order to eliminate the full effect of the documentation and coding changes on future payments. Unlike section 7(b)(1)(B) of Public Law 110-90, section 7(b)(1)(A) does not specify when we must apply the prospective adjustment, but merely requires us to make an “appropriate” adjustment. Therefore, as we stated in the FY 2011 IPPS/LTCH PPS final rule (75 FR 50061), we believe we have some discretion as to the manner in which we apply the prospective adjustment of −3.9 percent. We indicated that applying the full prospective adjustment of −3.9 percent for FY 2011, in combination with the proposed recoupment adjustment of −2.9 percent in FY 2011 (discussed below) would require an aggregate adjustment of −6.8 percent. As we discuss elsewhere in this section II.D., and more extensively in the FY 2011 IPPS/LTCH PPS final rule, it has been our practice to moderate payment adjustments when necessary to mitigate the effects of significant downward adjustments on hospitals, to avoid what could be widespread, disruptive effects of such adjustments on hospitals. As we also discuss below in this section II.D., we are required to implement the remaining adjustment in section 7(b)(1)(B) of Public Law 110-90 no later than the FY 2012 rulemaking period, and accordingly, in the FY 2011 IPPS/LTCH PPS proposed rule, we proposed a recoupment adjustment under section 7(b)(1)(B) of −2.9 percent for FY 2011 (75 FR 23870 and 23871). Therefore, we stated that we believed it was appropriate to not implement any or all of the −3.9 percent prospective adjustment in FY 2011. Accordingly, we did not propose a prospective adjustment under section 7(b)(1)(A) of Public Law 110-90 for FY 2011 (75 FR 23868 through 23870) for FY 2011. We note that, as a result, payments in FY 2011 (and in each future year until we implement the requisite adjustment) would be 3.9 percent higher than they would have been if we had implemented an adjustment under section 7(b)(1)(A) of Public Law 110-90. Our actuaries estimate that this 3.9 percentage point increase will result in an aggregate payment of approximately $4 billion. We also noted that payments in FY 2010 were also expected to be 3.9 percent higher than they would have been if we had implemented an adjustment under section 7(b)(1)(A) of Public Law 110-90, which our actuaries estimated increased aggregate payments by approximately $4 billion in FY 2010.

In the FY 2012 IPPS/LTCH PPS proposed rule (76 FR 25803 and 25804), we indicated that because further delay of this prospective adjustment will result in a continued accrual of unrecoverable overpayments, it was imperative that we proposed a prospective adjustment for FY 2012, while recognizing CMS' continued desire to mitigate the effects of any significant downward adjustments to hospitals. Therefore, we proposed a −3.15 percent prospective adjustment to the standardized amount to partially eliminate the full effect of the documentation and coding changes on future payments. Due to the offsetting nature of the remaining recoupment adjustment under section 7(b)(1)(B) of Public Law 110-90 (described below in section II.D.6. of this preamble), and after considering other payment adjustments to FY 2012 rates proposed elsewhere within the proposed rule, we indicated that we believe the proposed −3.15 percent adjustment would allow for a significant reduction in potential unrecoverable overpayments, yet would maintain a comparable adjustment level between FY 2011 and FY 2012, reflecting the applicable percentage increase with a documentation and coding adjustment. We stated that we recognize that an additional adjustment of −0.75 (3.9 minus 3.15) percent would be required in future rule making to complete the necessary −3.9 adjustment to meet CMS' statutory requirement under section 7(b)(1)(A) of Public Law 110-90. In the proposed rule, we indicated that we were not at that time proposing a timeline to implement the remainder of this prospective adjustment.

6. Recoupment or Repayment Adjustment for FY 2010 Authorized by Section 7(b)(1)(B) of Public Law 110-90

As discussed in section II.D.1. of this preamble, section 7(b)(1)(B) of Public Law 110-90 requires the Secretary to make an adjustment to the standardized amounts under section 1886(d) of the Act to offset the estimated increase or decrease in aggregate payments for FY 2008 and FY 2009 (including interest) resulting from the difference between the estimated actual documentation and coding effect and the documentation and coding adjustments applied under section 7(a) of Public Law 110-90. This determination must be based on a retrospective evaluation of claims data.

In the FY 2010 IPPS/RY 2010 LTCH PPS final rule with comment period (74 FR 43773), we estimated a 2.5 percent change due to documentation and coding that did not reflect real changes in case-mix for discharges occurring during FY 2008, exceeding the −0.6 percent prospective documentation and coding adjustment applied under section 7(a) of Public Law 110-90 by 1.9 percentage points. We stated that our actuaries had estimated that this 1.9 percentage point increase resulted in an increase in aggregate payments of approximately $2.2 billion in FY 2008. We did not propose to make an adjustment to the FY 2010 average standardized amounts to offset, in whole or in part, the estimated increase in aggregate payments for discharges occurring in FY 2008, but stated in the proposed rule that we intended to address this issue in future rulemaking. In the FY 2010 IPPS/RY 2010 LTCH PPS Start Printed Page 51492final rule (74 FR 43774), we stated that because we would not receive all FY 2009 claims data prior to publication of the final rule, we would address any increase or decrease in FY 2009 payments in future rulemaking for FY 2011 and 2012 after we performed a retrospective evaluation of the FY 2009 claims data. In response to public comments in FY 2010, we indicated that we recognized that any adjustment to account for the documentation and coding effect observed in the FY 2008 and FY 2009 claims data may result in significant future payment reductions for providers. However, we indicated that we are required under section 7(b)(1)(B) of Public Law 110-90 to recover the difference of actual documentation and coding effect in FY 2008 and FY 2009 that is greater than the prior adjustments. We agreed with the commenters who requested that CMS delay any adjustment and, for the reasons stated above, indicated that we expected to address this issue in the FY 2011 rulemaking. We refer readers to the FY 2010 IPPS/RY 2010 LTCH PPS final rule (74 FR 43767 through 43777) for a detailed description of our proposal, responses to comments, and finalized policy.

As we indicated in the FY 2011 IPPS/LTCH PPS final rule, the change due to documentation and coding that did not reflect real changes in case-mix for discharges occurring during FY 2008 and FY 2009 exceeded the −0.6 and −0.9 percent prospective documentation and coding adjustments applied under section 7(a) of Public Law 110-90 for those 2 years, respectively, by 1.9 percentage points in FY 2008 and 3.9 percentage points in FY 2009. In total, this change exceeded the cumulative prospective adjustments by 5.8 (1.9 plus 3.9) percentage points. Our actuaries estimated that this 5.8 percentage point increase resulted in an increase in aggregate payments of approximately $6.9 billion. In the FY 2011 IPPS/LTCH PPS final rule, we noted that there may be a need to actuarially adjust the recoupment adjustment to accurately reflect accumulated interest. Therefore, we determined that an aggregate adjustment of −5.8 percent in FYs 2011 and 2012, subject to actuarial adjustment to reflect accumulated interest, would be necessary in order to meet the requirements of section 7(b)(1)(B) of Public Law 110-90 to adjust the standardized amounts for discharges occurring in FYs 2010, 2011, and/or 2012 to offset the estimated amount of the increase in aggregate payments (including interest) in FYs 2008 and 2009. In the FY 2011 IPPS/LTCH PPS proposed rule (75 FR 23871), we stated that we intended to take into account the need to reflect accumulated interest in proposing a recoupment adjustment under section 7(b)(1)(B) of Public Law 110-90 for FY 2012.

It is often our practice to phase in rate adjustments over more than one year in order to moderate the effect on rates in any one year. Therefore, consistent with the policies that we have adopted in many similar cases, in the FY 2011 IPPS/LTCH PPS proposed rule, we proposed to make an adjustment to the standardized amount of −2.9 percent, representing approximately half of the aggregate adjustment required under section 7(b)(1)(B) of Public Law 110-90, for FY 2011. An adjustment of this magnitude would allow us to moderate the effects on hospitals in one year while simultaneously making it possible to implement the entire adjustment within the timeframe required under section 7(b)(1)(B) of Public Law 110-90 (that is, no later than FY 2012).

Unlike the permanent prospective adjustment to the standardized amounts under section 7(b)(1)(A) of Public Law 110-90 described earlier, the recoupment adjustment to the standardized amounts under section 7(b)(1)(B) of Public Law 110-90 is not cumulative, and, therefore, would be removed for subsequent fiscal years once we have completely offset the increase in aggregate payments for discharges for FY 2008 and FY 2009 expenditures. In keeping with our practice of moderating payment adjustments when necessary, we stated that we anticipated that the proposal of phasing in the recoupment adjustment will have an additional, and significant, moderating effect on implementing the requirements of section 7(b)(1)(B) of Public Law 110-90 for FY 2012.

In the FY 2011 IPPS/LTCH PPS proposed rule, we sought public comment on our proposal to offset part of the total 5.8 percent increase in aggregate payments (including interest) for discharges occurring in FY 2008 and FY 2009 resulting from the adoption of the MS-DRGs in FY 2011, noting that this proposal would result in a −2.9 percent adjustment to the standardized amount. We received numerous comments on our proposal, especially from national and regional hospital associations, hospital systems, and individual hospitals. MedPAC also commented on our proposal. We refer readers to the FY 2011 IPPS/LTCH PPS final rule with comment period (75 FR 50055 through 50073) for a detailed description of our analysis and prior responses to comments, and finalized policy.

In the FY 2011 IPPS/LTCH PPS final rule (75 FR 50062 through 50068), we finalized the proposed adjustment to the standardized amount of −2.9 percent, which represented approximately half of the aggregate recoupment adjustment required under section 7(b)(1)(B) of Public Law 110-90, for FY 2011. We were persuaded by both the MedPAC's analysis, and our own review of the methodologies recommended by various commenters, that the methodology we employed to determine the required recoupment adjustment was sound. Since the statute required that we implement the entire recoupment adjustment no later than FY 2012, we have sought, as we commonly do, to moderate the potential impact on hospitals by phasing in the required adjustment over more than one year. As we stated in prior rulemaking, a major advantage of making the −2.9 percent adjustment to the standardized amount in FY 2011 was that, because the required recoupment adjustment is not cumulative, we anticipated removing the FY 2011 −2.9 percent adjustment from the rates (in other words, making a positive 2.9 percent adjustment to the rates) in FY 2012, at the same time that the law required us to apply the remaining approximately −2.9 percent adjustment required by section 7(b)(1)(B) of Public Law 110-90. These two steps in FY 2012, restoring the FY 2011 −2.9 percent adjustment and then applying the remaining adjustment of approximately −2.9 percent, would effectively cancel each other out. The result of these two steps would be an aggregate adjustment of approximately 0.0 percent. While we stated in the FY 2011 IPPS/LTCH PPS final rule the need to potentially adjust the remaining −2.9 percent estimate to account for accumulated interest, our actuaries have determined that there has been no significant interest accumulation and that no additional adjustment will be required. Therefore, for FY 2012, pursuant to the timeframes set forth by section 7(b)(1)(B) of Public Law 110-90, and consistent with the discussion in the FY 2011 IPPS/LTCH PPS final rule, we proposed to complete the recoupment adjustment by implementing the remaining −2.9 percent adjustment, in addition to removing the effect of the −2.9 percent adjustment to the standardized amount finalized for FY 2011. Because these adjustments will, in effect, balance out, there will be no year-to-year change in the standardized amount due to this recoupment adjustment. As this Start Printed Page 51493adjustment will complete the required recoupment for overpayments due to documentation and coding effects on discharges occurring in FYs 2008 and 2009, we anticipate removing the effect of this adjustment by adding 2.9 percent to the standardized amount in FY 2013. We continue to believe that this is a reasonable and fair approach that satisfies the requirements of the statute while substantially moderating the financial impact on hospitals.

Comment: One commenter, MedPAC, reiterated its general support for the methodology used by our actuaries to estimate the magnitude of documentation and coding effect on IPPS payments due to the adoption of the MS-DRG system. In its letter, MedPAC explained that the methodology used by our actuaries “is akin to comparing two sets of payments: What payments actually were in fiscal year 2009 under the 2009 MS-DRGs and relative weights; and what payments would have been in 2009 if MS-DRGs had not been adopted and CMS had continued to use the prior (2007) CMS DRGs and weights.” MedPAC noted that by taking the difference between these two sets of payments, the methodology is designed to capture “the new GROUPER's interaction with how hospitals changed their documentation and coding. After the adoption of MS-DRGs in 2008, hospitals switched from recording general descriptions of patients' chronic conditions—which no longer affect payments under MS-DRGs—to recording the specific acute manifestations of patients' chronic conditions, which trigger higher payments under MS-DRGs. However, the same changes in diagnosis documentation and coding have little or no effect on the CMI measured using the 2007 CMS-DRGs and weights. This is because in that version of the GROUPER, both acute manifestations of chronic conditions and general descriptions of chronic conditions trigger higher payments. In contrast, when hospitals had little incentive to change documentation and coding—in 2007, for example—the two CMIs are approximately equal.”

Consistent with its comments in prior years, MedPAC's comment noted that its analysis of Medicare hospital inpatient claims for 2007-2009 yielded similar estimates of the documentation and coding effect. MedPAC concluded that “CMS would need to reduce IPPS payments temporarily by 5.8 percent to recover overpayments that occurred in 2008 and 2009. CMS also expected that overpayments equal to 3.9 percent of annual IPPS payments would continue through 2010, 2011, and future years until CMS makes a prospective offsetting adjustment (−3.9 percent) to the IPPS payments rates.”

MedPAC's comment described potential circumstances in which the methodology used both by our actuaries and MedPAC could overestimate the documentation and coding effect, noting that these possible circumstances “could cause only a small change in the estimated effect of documentation changes.”

MedPAC stated, “In response to the new MS-DRGs, hospitals had an incentive to report diagnoses that count as CCs in the new system. MedPAC's argument is that hospitals may also have stopped reporting diagnoses that counted as CCs in the old system, but do not count in the new one.” In short, MedPAC argued that the disappearance of the general chronic condition codes could have caused the CMIs based on the old FY 2007 GROUPER and weights to be understated in FYs 2008 and 2009. Thus, because CMIs based on the 2007 GROUPER and weights are the denominators of the documentation change estimates, understatement would bias the estimates upward. However, understatement would occur only to the extent that hospitals, when coding: (1) Did not replace such general chronic condition codes with corresponding acute manifestation codes and (2) the patient had no other secondary diagnosis code that qualified as a CC in the old GROUPER and are now CCs or MCCs under the MS-DRGs.

MedPAC's analysis concluded that the maximum possible effect of this potential overestimation is 0.36 percent, and “that total overpayments due to documentation changes in 2008 and 2009 may have ranged from 5.1 to 5.8 percent of IPPS payments ($6.0 to $6.9 billion).”

MedPAC recommended that CMS slow the pace of the payment adjustments so that hospitals would receive a net 1 percent update in FY 2012, as it recommend in its March 2011 Report to Congress. Furthermore, MedPAC stated that legislation should be enacted to require the Secretary of Health and Human Services to adjust payments further to recover all overpayments that have occurred or will occur in FYs 2010, 2011, and 2012 because the prospective adjustment was not completed. MedPAC asserted that:

“To allow payments to increase due to documentation and coding changes would undermine Congressional policy on updates. If Congress wants more money to flow into the hospital sector, a higher update is the appropriate mechanism, not cumulative changes in documentation and coding. Indeed, allowing those changes to increase hospital payments through the back door could eventually discourage needed refinements to the case-mix system in a tight budget era. In other words, if more money inevitably leaks into the system every time case-mix is refined, then there may be pressure to stop refining. That would lead to inequities for both providers and patients.”

Response: We appreciate MedPAC's analysis and continued support of the methodology used to determine the documentation and coding effect, and we agree that this methodology appropriately isolates the documentation and coding effect from real case-mix. With the exception of the possible overstatement described above, we note that MedPAC's analysis yielded results similar to CMS' determination of the documentation and coding effect. Based on our evaluation of FY 2008 and FY 2009 claims, we continue to believe that $6.9 billion dollars in overpayments were made during the period of FY 2008 and 2009. We estimate that a recoupment adjustment totaling 5.8 percent is necessary to recover these overpayments, and that operating IPPS rates are currently overstated by 3.9 percent. We also note that section 7(b)(1)(B) of the TMA requires the agency to recover these overpayments by FY 2012 and that section 7(b)(1)(A) of the TMA requires the agency to adjust rates to ensure that aggregate payments do not continue to be overstated.

With regard to MedPAC's analysis regarding the possible overestimate of the documentation and coding effect, we note that MedPAC characterized the potential effect as “small” and provided no corroborating analysis or specific examples of when this scenario may have occurred. We consulted with our medical coding experts and were unable to identify specific examples to support MedPAC's hypothesis. We note that MedPAC stated in its comment letter that the potential for overestimation exists only to the extent that “hospitals (1) did not replace such general chronic condition codes with corresponding acute manifestation codes and (2) the patient had no other secondary diagnosis code that qualified as a CC in the old grouper.” We reviewed coding changes that occurred during the transition to MS-DRGs and were able to identify codes that would result in a CC prior to MS-DRGs but would not result in a CC in the MS-DRG system. However, we were unable to identify an instance where this would necessarily result in a lower MS-DRG assignment because more specific codes were Start Printed Page 51494developed to support the more refined MS-DRG system and we would expect hospitals to use the more specific codes. For instance, congestive heart failure was a CC under CMS DRGs, but is not a CC under MS-DRGs. Under MS-DRGs, we started requiring more specific information on the type of heart failure in order to count this as a CC or MCC. Generally, under the MS-DRG system, the “unspecified” codes in a category no longer result in CCs.

We did not receive any other public comments regarding MedPAC's statements that we may have overestimated the effect of the documentation and coding by considering cases grouped under the MS-DRG system as having a higher severity due to being coded without appropriate CCs under the pre-MS-DRG system.

At this time, we believe it would not be appropriate to revise our estimates based solely on MedPAC's analysis without knowing of any specific examples of the scenario described above. Without this information, we cannot determine whether there was a sufficient volume of cases to cause a potential documentation and coding overestimate. However, we welcome specific examples from the public to possibly inform future rulemaking.

We acknowledge MedPAC's recommendation to provide hospitals with a net 1 percent update. As noted above, the comment restates MedPAC's recommendation from its March 2011 Report to Congress. We address this issue below in our response to comments by the provider community that expressed concern regarding the impact of various payment adjustments on hospitals.

We also acknowledge MedPAC's request that additional statutory authority be granted to the Secretary of Health and Human Services to recover overpayments made during subsequent fiscal years.

Lastly, we agree with MedPAC that it is important to continue refining the methodology of how case mix is measured to ensure payment accuracy. We note that in this final rule we discuss potential refinements to the MS-DRG relative weight system, and CMS' active engagement in implementing the ICD-10 system. These discussions illustrate the efforts the agency is undertaking to improve the ability to measure case mix precisely and to pay hospitals for inpatient services more accurately.

Comment: Most commenters, including national hospital associations, continued to acknowledge that there were documentation and coding increases in FY 2008 and FY 2009 that were in excess of the statutory 0.6 percent and 0.9 percent adjustments specified in section 7(a) of the TMA. However, as in prior rulemakings on this issue, most commenters again questioned the methodology employed by MedPAC and our actuaries to determine the magnitude of the excess.

We also received Congressional correspondence from numerous members of Congress stating that hospitals had expressed concerns regarding the CMS Actuary's methodology and requesting that CMS ensure that its methodology accurately reflects changes in patient severity prior to finalizing adjustments for documentation and coding in response to hospitals' concerns. Specifically, the correspondence suggested that CMS could consider alternative methodologies for estimating the effect of documentation and coding, including trend-based analysis and chart abstraction.

Several commenters stated that historical case mix trend is inconsistent with our estimate of the effect of the FY 2008 and FY 2009 documentation and coding changes due to the implementation of the MS-DRGs. One commenter stated “Our analysis, which used multiple years of patient claims, clearly shows that a significant portion of the change CMS found is actually the continuation of historical trends, rather than the effect of documentation and coding changes due to implementation of MS-DRGs. This analysis found a cumulative documentation and coding effect of 3.6 percent for FYs 2008 and 2009, as opposed to the 5.4 percent that CMS found.”

Several commenters submitted an historical case-mix trend analysis last year, which showed a documentation and coding effect of 2.3 percent. An analysis submitted by the same commenters this year showed a cumulative documentation and coding increase through FY 2009 of 3.6 percent. The commenters revised their analysis to respond to CMS comments made in last year's rule. Specifically, the national hospital associations stated that, “This year we make several modifications to that trend-based analysis to respond to CMS' critiques as enumerated in the FY 2011 inpatient PPS final rule. Given that we have addressed the agency's concerns, we are hopeful that it will give our methodology fresh consideration.” One hospital association also pointed out that CMS included an assumption regarding real case-mix growth in the adjustment for “changes in case-mix” in the capital update framework at § 412.308(c)(1)(ii) and suggested that the estimate made by our actuaries regarding documentation and coding be reduced by this assumption in order to maintain consistency with the capital update framework.

Commenters also examined the methodology used by our actuaries and MedPAC using index number theory. As stated by these commenters, “the relative case weights in a given grouper are like relative prices in a price index calculation (in fact they are relative prices for the different MS-DRGs) and the quantities of discharges in various MS-DRGs are like the quantities of goods in the price index calculation.” Commenters claimed that, based on index number theory, the methodology employed by MedPAC and our actuaries can only provide upper and lower bounds of the combined effect of documentation and coding and real case-mix change. MedPAC, however, indicated that knowledge of the 2007 MS-DRG GROUPER, the new MS-DRG GROUPER, historical documentation of patients' diagnoses, and the changes CMS made when it created the MS-DRGs can be used to narrow the range of the potential documentation and coding effect as described above, although they noted that these “could cause only a small change in the estimated effect of documentation changes.”

As in past years, several commenters indicated that CMS should use medical records data to distinguish documentation and coding changes from real case-mix changes. MedPAC disagreed with the commenters' rationale that the use of medical records data could determine the effect of both documentation and coding, and stated the following: “Gold-standard coders, however, only see the diagnoses written in the record and therefore are not able to distinguish changes in documentation from real changes in patients' diagnoses. This method of recoding existing documentation only works in situations where hospitals have no incentive to change documentation. That is clearly not the case with the transition to MS-DRGs.”

Response: We disagree that the new analysis presented by the national hospital associations has addressed our concerns with the use of a trend analysis to determine the documentation and coding increase when a more direct measurement of the relevant increase can be obtained using our proposed methodology. In last year's rule, we expressed several concerns with regard to the use of a trend analysis, stating, “We believe that the determination of an appropriate Start Printed Page 51495historical trend is less straightforward than our methodology, which, as described above, simply removes real case-mix growth from the calculation” (75 FR 50066). While we pointed out certain analytical flaws in the trend analysis used last year (for a full discussion, we refer readers to the FY 2011 IPPS/LTCH PPS final rule (75 FR 50065 through 50066)), we did not state the correction of those flaws would yield a better documentation and coding estimate than the direct estimate obtained under our proposed methodology. In fact, we noted that “changes in case-mix do not necessarily follow a consistent pattern over time.” MedPAC provided analysis in its comment letter which supported CMS' position. MedPAC's analysis demonstrated that CMI growth was modest at best, never exceeding plus or minus 1 percent the decade prior to the introduction of MS-DRGs, and in some years was negative.

The national hospital associations' most significant response to our critique of their previous analysis in the FY 2011 IPPS/LTCH PPS final rule was to expand the time period upon which its trend analysis is based to include years where there were sustained negative changes in actual CMI. This raised their estimate of documentation and coding from 2.3 percent to 3.6 percent. We believe that this increase demonstrates the variability in the estimates that can be obtained using trend analyses. We also stated in last year's final rule that “despite our position that our methodology more directly measures the relevant increase, we did examine the alternative approach favored by commenters for calculating the documentation and classification increase. As a general statement, the approach of examining historical trends to estimate what case-mix would have been in the absence of the adoption of the MS-DRGs should not necessarily yield significantly different results from the analysis done by our actuaries and the MedPAC, if an appropriate historical trend can be determined.”

We reiterate our concerns with the use of historical trends to determine documentation and coding this year, and we do not believe that the modifications to the commenters' analysis address all of these concerns. In particular, we agree with MedPAC that “absent changes in documentation and coding and the shift away from inpatient surgeries, real changes in the CMI in 2008 through 2010 would be completely consistent with historical CMI changes since 2001.” In performing its analysis, MedPAC adjusted for changes in the share of cases with surgery, share of cases with CCs, and the estimated effects of changes in documentation and coding. MedPAC summarized the results of its analysis in the following graph.

Start Printed Page 51496

In summary, with respect to trend analysis, we continue to believe that the determination of an appropriate historical trend is less straightforward than our proposed methodology, which simply removes real case-mix growth from the calculation. In addition, the estimates obtained using our proposed methodology are consistent with the historical case-mix growth, as demonstrated by MedPAC.

We also disagree with commenters who stated that the methodology employed by MedPAC and our actuaries can only provide upper and lower bounds of the combined effect of documentation and coding and real case-mix change and cannot separate documentation and coding effects from real case-mix change. While MedPAC recognized that the potential for a range of estimates may exist, MedPAC disagreed with the conclusion that index number theory, as described above, should be used to determine this range. MedPAC stated that “in this instance at least, the estimated range between the lower and upper bounds based on this approach is so wide that the estimates are useless for policy making.” We agree with MedPAC that the wide range resulting from an index number theory approach renders such an approach useless in this context.

In response to commenters' support for using hospital records to distinguish documentation and coding effect from real case-mix changes, we agree with MedPAC's rationale that such an analysis would fail to capture changes in documentation. MedPAC stated: “In our view, this approach does not work. The reason is that hospitals had an incentive to persuade attending physicians to be more specific in describing patients' acute manifestations of chronic conditions in their medical records. Some hospitals hired documentation specialists with the goal of changing physicians' medical record documentation, not simply to do a better job of coding what they wrote in the record (Hahey 2008). Gold-standard coders, however, only see the diagnoses written in the record and therefore are not able to distinguish changes in documentation from real changes in patients' diagnoses. This method of recoding existing documentation only works in situations where hospitals have no incentive to change documentation. That is clearly not the case with the transition to MS-DRGs. Thus, a very important part of the effect of changes in documentation and coding cannot be detected by the proposed method.”

We also note that as one part of our initial documentation and coding analysis, we attempted to examine coding changes based on hospital chart data from the Medicare Clinical Data Abstraction Center (CDAC). However, as we described in the FY 2010 IPPS/LTCH PPS final rule, it was not possible to perform this analysis due to aberrant CDAC data. We stated, “While we attempted to use the CDAC data to distinguish real increase in case-mix growth from documentation and coding in the overall case-mix number, we found aberrant data and significant variation across the FY 1999-FY 2007 analysis period. It was not possible to distinguish changes in documentation and coding from changes in real case-mix in the CDAC data. Therefore, we concluded that the CDAC data would not support analysis of real case-mix growth that could be used in our retrospective evaluation of the FY 2008 claims data.” (74 FR 43769)

Finally, we disagree with the commenters' suggestion that the assumptions in the capital update framework should be applied in our actuaries' estimate of documentation and coding, because the capital update framework is intended for projection purposes and would be inappropriate to use as a proxy for historical trends.

After careful consideration of all of the public comments we received, including alternatives suggested by commenters, we remain confident in the accuracy of our methodology and its appropriateness in determining the required adjustment amounts.

Comment: Numerous commenters expressed concern regarding the potentially severe negative fiscal impact that would be experienced by providers if the proposed documentation and coding improvement adjustment were to Start Printed Page 51497be implemented. As noted above, MedPAC recommended that CMS reduce its proposed −3.15 percent adjustment to be consistent with a net update factor of +1.0 percent, as it recommended in its March 2011 Report to Congress.

As noted previously, we also received Congressional correspondence from numerous members of Congress that requested CMS to reconsider what would be an appropriate adjustment to hospital payments and also requested that CMS reexamine its methodology. This correspondence noted that hospitals would experience payment reductions if the proposed rule were finalized without modification and further stated that hospitals needed “adequate Medicare reimbursement to ensure that patients and communities receive the care they need.”

Response: We recognize the concerns regarding possible financial disruption that may be caused by the proposed documentation and coding improvement payment adjustment. We note, however, that these payment adjustments are necessary to correct past overpayments due solely to documentation and coding improvements. We have already delayed implementation of the required prospective adjustment amount, and we proposed only a portion of the remaining required adjustment to allow hospitals time to adjust to future payment differences and to moderate the effect of this adjustment in any given year. We are required under section 7(b)(1)(B) of the TMA to complete the remaining one-time −2.9 percent recoupment adjustment for FY 2008 and FY 2009 overpayments in FY 2012, and we believe the impact of completing this adjustment to be reasonable considering it will be completely offset by removing the FY 2011 recoupment adjustment by placing a +2.9 percent adjustment back to the standardized amount. In FY 2013, a positive +2.9 percent adjustment will be made, completing the recoupment process.

In the proposed rule, we stated it was imperative that CMS make a significant prospective adjustment amount in FY 2012 to prevent the accumulation of unrecoverable overpayments. As stated in previous responses to comments, we remain confident in the accuracy of the overall methodology and its appropriateness in determining the required adjustment amount. However, after consideration of the public comments, and in keeping with our longstanding policy to mitigate, when possible, the effects of significant downward adjustments on hospitals, we are finalizing a prospective adjustment of −2.0 percent, which is a reduction from our proposed adjustment of −3.15 percent. We note that this adjustment will result in a total update of +1.0 percent, in accordance with MedPAC's recommendation in its March 2011 Report to Congress for hospitals that report quality data consistent with the requirements of the Hospital IQR Program. Specifically, as discussed elsewhere in this final rule, the applicable percentage increase for FY 2012 is +1.9 percent (based on a market basket of +3.0 percent, a multifactor productivity adjustment of −1.0 percentage point, and a statutory adjustment of −0.1 percentage point in accordance with section 3401 of the Affordable Care Act). When combined with the +1.1 adjustment in light of Cape Cod v. Sebelius, 630 F.3d 203 (D.C. Cir. 2011) discussed elsewhere in this final rule, the applicable percentage increase of +1.9 percent and this proposed prospective adjustment of −2.0 percent results in a net total update of +1.0 percent, prior to additional adjustments for budget neutrality and other policy adjustments. We believe that this level of adjustment will help to minimize year to year volatility in payment rates due to the required documentation and coding adjustment. As we stated in the proposed rule, our analysis found that a prospective adjustment of −3.9 percent continues to be necessary. Because we are making a −2.0 percent prospective adjustment for FY 2012, a remaining prospective of adjustment of −1.9 percent will be necessary. While we are not at this time stating when we will make the remaining required −1.9 percent prospective adjustment, we consider it feasible to make all or most of the adjustment in FY 2013, when a +2.9 percent adjustment will be factored into rates to offset the one-time FY 2012 recoupment adjustment.

The table below summarizes the adjustments for FY 2012 for documentation and coding for IPPS hospitals.

FY 2012 MS-DRG Documentation and Coding Adjustment

Required prospective adjustment for FYs 2008-2009Remaining required recoupment adjustment for FYs 2008-2009Total remaining adjustmentProspective adjustment for FY 2012Recoupment adjustment to FY 2012 paymentsRemaining prospective adjustment
Level of Adjustments−3.9%−2.9%−6.8%−2.0%−2.9%−1.9%

7. Background on the Application of the Documentation and Coding Adjustment to the Hospital-Specific Rates

Under section 1886(d)(5)(D)(i) of the Act, SCHs are paid based on whichever of the following rates yields the greatest aggregate payment: The Federal rate; the updated hospital-specific rate based on FY 1982 costs per discharge; the updated hospital-specific rate based on FY 1987 costs per discharge; the updated hospital-specific rate based on FY 1996 costs per discharge; or the updated hospital-specific rate based on FY 2006 costs per discharge. Under section 1886(d)(5)(G) of the Act, MDHs are paid based on the Federal national rate or, if higher, the Federal national rate plus 75 percent of the difference between the Federal national rate and the updated hospital-specific rate based on the greatest of the FY 1982, FY 1987, or FY 2002 costs per discharge. In the FY 2008 IPPS final rule with comment period (72 FR 47152 through 47188), we established a policy of applying the documentation and coding adjustment to the hospital-specific rates. In that final rule with comment period, we indicated that because SCHs and MDHs use the same DRG system as all other hospitals, we believe they should be equally subject to the budget neutrality adjustment that we are applying for adoption of the MS-DRGs to all other hospitals. In establishing this policy, we relied on section 1886(d)(3)(A)(vi) of the Act, which provides us with the authority to adjust “the standardized amount” to eliminate the effect of changes in coding or classification that do not reflect real change in case-mix.

However, in the final rule that appeared in the Federal Register on November 27, 2007 (72 FR 66886), we Start Printed Page 51498rescinded the application of the documentation and coding adjustment to the hospital-specific rates retroactive to October 1, 2007. In that final rule, we indicated that, while we still believe it would be appropriate to apply the documentation and coding adjustment to the hospital-specific rates, upon further review, we decided that the application of the documentation and coding adjustment to the hospital-specific rates is not consistent with the plain meaning of section 1886(d)(3)(A)(vi) of the Act, which only mentions adjusting “the standardized amount” under section 1886(d) of the Act and does not mention adjusting the hospital-specific rates.

In the FY 2009 IPPS proposed rule (73 FR 23540), we indicated that we continued to have concerns about this issue. Because hospitals paid based on the hospital-specific rate use the same MS-DRG system as other hospitals, we believe they have the potential to realize increased payments from documentation and coding changes that do not reflect real increases in patient severity of illness. In section 1886(d)(3)(A)(vi) of the Act, Congress stipulated that hospitals paid based on the standardized amount should not receive additional payments based on the effect of documentation and coding changes that do not reflect real changes in case-mix. Similarly, we believe that hospitals paid based on the hospital-specific rates should not have the potential to realize increased payments due to documentation and coding changes that do not reflect real increases in patient severity of illness. While we continue to believe that section 1886(d)(3)(A)(vi) of the Act does not provide explicit authority for application of the documentation and coding adjustment to the hospital-specific rates, we believe that we have the authority to apply the documentation and coding adjustment to the hospital-specific rates using our special exceptions and adjustment authority under section 1886(d)(5)(I)(i) of the Act. The special exceptions and adjustment provision authorizes us to provide “for such other exceptions and adjustments to [IPPS] payment amounts * * * as the Secretary deems appropriate.” In the FY 2009 IPPS final rule (73 FR 48448 through 48449), we indicated that, for the FY 2010 rulemaking, we planned to examine our FY 2008 claims data for hospitals paid based on the hospital-specific rate. We further indicated that if we found evidence of significant increases in case-mix for patients treated in these hospitals that do not reflect real changes in case-mix, we would consider proposing application of the documentation and coding adjustments to the FY 2010 hospital-specific rates under our authority in section 1886(d)(5)(I)(i) of the Act.

In response to public comments received on the FY 2009 IPPS proposed rule, we stated in the FY 2009 IPPS final rule that we would consider whether such a proposal was warranted for FY 2010. To gather information to evaluate these considerations, we indicated that we planned to perform analyses on FY 2008 claims data to examine whether there has been a significant increase in case-mix for hospitals paid based on the hospital-specific rate. If we found that application of the documentation and coding adjustment to the hospital-specific rates for FY 2010 was warranted, we indicated that we would propose to make such an adjustment in the FY 2010 IPPS/RY 2010 LTCH PPS proposed rule.

8. Documentation and Coding Adjustment to the Hospital-Specific Rates for FY 2011 and Subsequent Fiscal Years

In the FY 2010 IPPS/RY 2010 LTCH PPS proposed rule and final rule (74 FR 24098 through 24100 and 74 FR 43775 through 43776, respectively), we discussed our retrospective evaluation of the FY 2008 claims data for SCHs and MDHs using the same methodology described earlier for other IPPS hospitals. We found that, independently for both SCHs and MDHs, the change due to documentation and coding that did not reflect real changes in case-mix for discharges occurring during FY 2008 slightly exceeded the proposed 2.5 percent result discussed earlier for other IPPS hospitals, but did not significantly differ from that result. We refer readers to those rules for a more complete discussion.

Therefore, consistent with our statements in prior IPPS rules, we proposed to use our authority under section 1886(d)(5)(I)(i) of the Act to prospectively adjust the hospital-specific rates by the proposed −2.5 percent in FY 2010 to account for our estimated documentation and coding effect in FY 2008 that does not reflect real changes in case-mix. We proposed to leave this adjustment in place for subsequent fiscal years in order to ensure that changes in documentation and coding resulting from the adoption of the MS-DRGs do not lead to an increase in aggregate payments for SCHs and MDHs not reflective of an increase in real case-mix. The proposed −2.5 percent adjustment to the hospital-specific rates exceeded the −1.9 percent adjustment to the national standardized amount under section 7(b)(1)(A) of Public Law 110-90 because, unlike the national standardized rates, the FY 2008 hospital-specific rates were not previously reduced in order to account for anticipated changes in documentation and coding that do not reflect real changes in case-mix resulting from the adoption of the MS-DRGs.

In the FY 2010 IPPS/RY 2010 LTCH PPS proposed rule (74 FR 24100), we solicited public comment on this proposal. Consistent with our approach for IPPS hospitals discussed earlier, in the FY 2010 IPPS/RY 2010 LTCH PPS final rule, we also delayed adoption of a documentation and coding adjustment to the hospital-specific rate until FY 2011. We refer readers to the FY 2010 IPPS/RY 2010 LTCH PPS final rule for a more detailed discussion of our proposal, responses to comments, and finalized policy.

As we have noted previously, because SCHs and MDHs use the same MS-DRG system as all other IPPS hospitals, we believe they have the potential to realize increased payments from documentation and coding changes that do not reflect real increases in patient severity of illness. Therefore, we believe they should be equally subject to a prospective budget neutrality adjustment that we are applying for adoption of the MS-DRGs to all other hospitals. We believe the documentation and coding estimates for all subsection (d) hospitals should be the same. While the findings for the documentation and coding effect for all IPPS hospitals are similar to the effect for SCHs and slightly different to the effect for MDHs, we continue to believe that this is the appropriate policy so as to neither advantage or disadvantage different types of providers. As we discuss in section II.D.4. of this preamble, our best estimate, based on the most recently available data, is that a cumulative adjustment of −5.4 percent is required to eliminate the full effect of the documentation and coding changes on future payments to SCHs and MDHs. Unlike the case of standardized amounts paid to IPPS hospitals, prior to FY 2011, we had not made any previous adjustments to the hospital-specific rates paid to SCHs and MDHs to account for documentation and coding changes. Therefore, the entire −5.4 percent recoupment adjustment needed to be made, as opposed to a −3.9 percent remaining adjustment for IPPS hospitals.

In the FY 2011 IPPS/LTCH PPS final rule (75 FR 50068 through 50071), we made an adjustment to the standardized Start Printed Page 51499amount for IPPS hospitals of −2.9 percent under section 7(b)(1)(B) of Public Law 110-90, for FY 2011. As we noted in the FY 2011 IPPS/LTCH PPS final rule, in determining the level and pace of adjustments to account for such documentation and coding changes, we believe that it is important to maintain, as much as possible, both consistency and equity among these classes of hospitals. Therefore, we finalized a prospective adjustment of −2.9 percent to the hospital-specific rates paid to SCHs and MDHs. We refer readers to the FY 2011 IPPS/LTCH PPS final rule for a more detailed discussion of our proposal, responses to comments, and finalized policy.

As discussed earlier in this section II.D., in the FY 2012 IPPS/LTCH PPS proposed rule, we proposed a net −3.15 percent documentation and coding adjustment for IPPS hospitals in FY 2012 (−3.15 percent prospective adjustment plus a −2.9 percent recoupment adjustment in FY 2012, offset by the removal of the −2.9 percent recoupment adjustment for FY 2010). The proposed IPPS adjustment exceeded the remaining −2.5 percent documentation and coding adjustment for hospitals receiving a hospital-specific rate (that is, the entire −5.4 percent adjustment, minus the −2.9 percent adjustment finalized for FY 2011). As we indicated in the FY 2011 IPPS/LTCH PPS proposed rule and final rule, we are continuing, as much as possible, consistent with section 7(b)(1) of Public Law 110-90 and section 1886(d)(5)(I)(i) of the Act, to take such consistency and equity into account in developing future proposals for implementing documentation and coding adjustments. We believe that any adjustment to the hospital-specific rate due to documentation and coding effect should be as similar as possible to adjustments to the IPPS rate. Accordingly, we proposed a −2.5 percent payment adjustment to the hospital-specific rate. We believe that proposing the entire remaining prospective adjustment of −2.5 percent would allow CMS to maintain, to the extent possible, similarity and consistency in payment rates for different IPPS hospitals paid using the MS-DRG. As discussed below, we took a similar approach in finalizing an adjustment to the Puerto-Rico specific rate in FY 2011.

Comment: Numerous commenters requested that CMS rescind its proposed documentation and coding adjustment for SCHs and MDHs and questioned CMS' statutory authority to apply this adjustment to providers receiving a hospital-specific rate. The commenters argued that because section 1886(d)(3)(A)(vi) of the Act only authorizes application of a documentation and coding adjustment to the standardized amount, Congress' specific instruction as to the applicability of this type of adjustment makes it impermissible for CMS to apply the adjustment to the hospital-specific rates. Furthermore, commenters contend that, due to their critical role in isolated communities, any negative documentation and coding adjustment to SCHs and MDHs would endanger their ability to provide the type of care that Congress specifically sought to protect by establishing their special Medicare payment systems.

Response: We continue to disagree with the commenters that the Secretary's broad authority to make exceptions and adjustment to payment amounts under section 1886(d)(3)(A)(vi) of the Act cannot be applied in this instance. We have discussed the basis for applying such an adjustment in prior rules (in the FY 2009 proposed rule (73 FR 23540), the FY 2009 IPPS final rule (73 FR 48448), and the FY 2010 IPPS/RY 2010 LTCH PPS proposed rule (74 FR 24098)) and do not agree that the language in section 1886(d)(3)(A)(vi) of the Act limits our authority under section 1886(d)(5)(I)(i) of the Act to make such an adjustment. We recognize that SCHs and MDHs are entitled, through legislation, to receive the hospital-specific rate in order to compensate for their unique service requirements in the provider community. Similar to our approach with IPPS hospitals, we are implementing a phase-in of the documentation and coding adjustment over an appropriate period, beginning in FY 2011. We will continue to separately analyze SCH and MDH claims data to ensure than any future adjustment is appropriate for these provider types.

Comment: MedPAC responded to our request for comments regarding the level of adjustment for special categories of hospitals, such as hospitals paid under the hospital-specific payment rate, by pointing out hospitals have the same financial incentives for documentation and coding improvements and the same ability to benefit from the resulting change in case-mix, and by recommending that “all IPPS hospitals should be treated the same.” At the same time, MedPAC also stated that “delaying prevention of overpayments * * * creates a problem because overpayments will continue to accumulate in 2010 and later years until the effect of documentation and coding improvement is fully offset in the payment rates.” In setting forward its multi-year recommendation to CMS for complying with the requirements of section 7 of Public Law 110-90, MedPAC emphasized “minimizing the accumulation of overpayments.”

Response: We appreciate MedPAC's comments and agree that it is appropriate to conclude that hospitals paid under the hospital-specific rate have experienced a 5.4-percent increase documentation and coding in FYs 2008 and 2009, insofar as these hospitals had the same financial incentives to improve documentation and coding in those years as other IPPS hospitals. We further agree with MedPAC that it is appropriate to focus on minimizing the accumulation of overpayments, and we interpret this to mean that MedPAC recommends that CMS move forward as quickly as possible with prospective adjustments at an appropriate level. We appreciate MedPAC's guidance that “all hospitals be treated the same,” and stress the importance of consistent treatment of various classes of similarly situated hospitals in our payment policy determinations.

We continue to believe that any adjustment to the hospital-specific rate due to documentation and coding effect should be as similar as possible to adjustments to the standardized amount. Accordingly, because we are finalizing a prospective adjustment to the standardized amount of −2.0 percent for FY 2012, we are also finalizing a prospective adjustment to the hospital-specific rate of −2.0 percent for FY 2012, instead of our proposed adjustment of −2.5 percent. Making this level of adjustment allows CMS to maintain, for FY 2012, consistency in payment rates for different IPPS hospitals paid using the MS-DRG. Because this −2.0 percent adjustment no longer reflects the entire remaining requirement adjustment amount of −2.5 percent, an additional −0.5 percent adjustment to the hospital-specific payment rates will be required in future rulemaking.

9. Application of the Documentation and Coding Adjustment to the Puerto Rico-Specific Standardized Amount

a. Background

Puerto Rico hospitals are paid based on 75 percent of the national standardized amount and 25 percent of the Puerto Rico-specific standardized amount. As noted previously, the documentation and coding adjustment we adopted in the FY 2008 IPPS final rule with comment period relied upon our authority under section 1886(d)(3)(A)(vi) of the Act, which provides the Secretary the authority to Start Printed Page 51500adjust “the standardized amounts computed under this paragraph” to eliminate the effect of changes in coding or classification that do not reflect real changes in case-mix. Section 1886(d)(3)(A)(vi) of the Act applies to the national standardized amounts computed under section 1886(d)(3) of the Act, but does not apply to the Puerto Rico-specific standardized amount computed under section 1886(d)(9)(C) of the Act. In calculating the FY 2008 payment rates, we made an inadvertent error and applied the FY 2008 −0.6 percent documentation and coding adjustment to the Puerto Rico-specific standardized amount, relying on our authority under section 1886(d)(3)(A)(vi) of the Act. However, section 1886(d)(3)(A)(vi) of the Act authorizes application of a documentation and coding adjustment to the national standardized amount and does not apply to the Puerto Rico specific standardized amount. In the FY 2009 IPPS final rule (73 FR 48449), we corrected this inadvertent error by removing the −0.6 percent documentation and coding adjustment from the FY 2008 Puerto Rico-specific rates (that is, we made a positive 0.6 percent adjustment, increasing the Puerto Rico-specific rates).

While section 1886(d)(3)(A)(vi) of the Act is not applicable to the Puerto Rico-specific standardized amount, we believe that we have the authority to apply the documentation and coding adjustment to the Puerto Rico-specific standardized amount using our special exceptions and adjustment authority under section 1886(d)(5)(I)(i) of the Act. Similar to SCHs and MDHs that are paid based on the hospital-specific rate, we believe that Puerto Rico hospitals that are paid based on the Puerto Rico-specific standardized amount should not have the potential to realize increased payments due to documentation and coding changes that do not reflect real increases in patient severity of illness. Consistent with the approach described for SCHs and MDHs, in the FY 2009 IPPS final rule (73 FR 48449), we indicated that we planned to examine our FY 2008 claims data for hospitals in Puerto Rico. We indicated in the FY 2009 IPPS proposed rule (73 FR 23541) that if we found evidence of significant increases in case-mix for patients treated in these hospitals, we would consider proposing to apply documentation and coding adjustments to the FY 2010 Puerto Rico-specific standardized amount under our authority in section 1886(d)(5)(I)(i) of the Act.

b. Documentation and Coding Adjustment to the Puerto Rico-Specific Standardized Amount

For the FY 2010 IPPS/RY 2010 LTCH PPS proposed rule, we performed a retrospective evaluation of the FY 2008 claims data for Puerto Rico hospitals using the same methodology described earlier for IPPS hospitals paid under the national standardized amounts under section 1886(d) of the Act. We found that, for Puerto Rico hospitals, the increase in payments for discharges occurring during FY 2008 due to documentation and coding that did not reflect real changes in case-mix for discharges occurring during FY 2008 was approximately 1.1 percent. However, as we noted earlier for IPPS hospitals and hospitals receiving hospital-specific rates, if the estimated documentation and coding effect determined based on a full analysis of FY 2009 claims data was more or less than our then current estimates, it would change, possibly lessen, the anticipated cumulative adjustments that we had estimated we would have to make for the FY 2008 and FY 2009 combined adjustment. Therefore, we believed that it would be more prudent to delay implementation of the documentation and coding adjustment to allow for a more complete analysis of FY 2009 claims data for Puerto Rico hospitals.

In the FY 2010 IPPS/RY 2010 LTCH PPS final rule (74 FR 43777), we indicated that, given these documentation and coding increases, consistent with our statements in prior IPPS rules, we would use our authority under section 1886(d)(5)(I)(i) of the Act to adjust the Puerto Rico-specific rate and solicited public comment on the proposed −1.1 percent prospective adjustment. However, in parallel to our decision to postpone adjustments to the Federal standardized amount, we also indicated that we were adopting a similar policy for the Puerto Rico-specific rate for FY 2010 and would consider the phase-in of this adjustment over an appropriate time period through future rulemaking. We noted that, as with the hospital-specific rates, the Puerto Rico-specific standardized amount had not previously been adjusted based on estimated changes in documentation and coding associated with the adoption of the MS-DRGs.

Consistent with our approach for IPPS hospitals for FY 2010, we indicated that we would address in the FY 2011 rulemaking cycle any change in FY 2009 case-mix due to documentation and coding that did not reflect real changes in case-mix for discharges occurring during FY 2009.

As we have noted above, similar to SCHs and MDHs, hospitals in Puerto Rico use the same MS-DRG system as all other hospitals and we believe they have the potential to realize increased payments from documentation and coding changes that do not reflect real increases in patient severity of illness. Therefore, we believe they should be equally subject to the prospective budget neutrality adjustment that we intend to apply to prospective payment rates for IPPS hospitals, including SCHs and MDHs, in order to eliminate the full effect of the documentation and coding changes associated with implementation of the MS-DRG system.

As discussed in the FY 2011 IPPS/LTCH PPS final rule (75 FR 50071 through 50073), using the same methodology we applied to estimate documentation and coding changes under IPPS for non-Puerto Rico hospitals, our best estimate, based on the then most recently available data (FY 2009 claims paid through March 2010), was that, for documentation and coding that occurred over FY 2008 and FY 2009, a cumulative adjustment of −2.6 percent was required to eliminate the full effect of the documentation and coding changes on future payments from the Puerto Rico-specific rate. As we stated above, we believe it important to maintain both consistency and equity among all hospitals paid on the basis of the same MS-DRG system. At the same time, however, we recognize that the estimated cumulative impact on aggregate payment rates resulting from implementation of the MS-DRG system was smaller for Puerto Rico hospitals as compared to IPPS hospitals and SCHs and MDHs. Therefore, in the FY 2011 IPPS/LTCH PPS proposed rule (75 FR 23876), we proposed an adjustment to eliminate the full effect of the documentation and coding changes on the portion of future payments to Puerto Rico hospitals based on the Puerto Rico-specific rate. We stated that we believed that a full prospective adjustment was the most appropriate means to take into full account the effect of documentation and coding changes on payments, while maintaining equity as much as possible between hospitals paid on the basis of different prospective rates. We noted that our updated data analysis in the FY 2011 IPPS/LTCH PPS final rule (75 FR 50072 through 50073) showed that this adjustment would be −2.6 percent. The previous estimate in the proposed rule was a −2.4 percent adjustment.

One reason we proposed the full prospective adjustment for the Puerto Rico-specific rate in FY 2011 was to Start Printed Page 51501maintain equity as much as possible in the documentation and coding adjustments applied to various hospital rates in FY 2011. Because our proposal was to make an adjustment that represents the full adjustment that is warranted for the Puerto Rico-specific rate, we indicated that we did not anticipate proposing any additional adjustments to this rate for documentation and coding effects.

Therefore, because the Puerto Rico-specific rate received a full prospective adjustment of −2.6 percent in FY 2011, we proposed no further adjustment in the proposed rule for FY 2012.

E. Refinement of the MS-DRG Relative Weight Calculation

1. Background

In the FY 2009 IPPS final rule (73 FR 48450), we continued to implement significant revisions to Medicare's inpatient hospital rates by completing our 3-year transition from charge-based relative weights to cost-based relative weights. Beginning in FY 2007, we implemented relative weights based on cost report data instead of based on charge information. We had initially proposed to develop cost-based relative weights using the hospital-specific relative value cost center (HSRVcc) methodology as recommended by MedPAC. However, after considering concerns expressed in the public comments we received on the proposal, we modified MedPAC's methodology to exclude the hospital-specific relative weight feature. Instead, we developed national CCRs based on distinct hospital departments and engaged a contractor to evaluate the HSRVcc methodology for future consideration. To mitigate payment instability due to the adoption of cost-based relative weights, we decided to transition cost-based weights over 3 years by blending them with charge-based weights beginning in FY 2007. (We refer readers to the FY 2007 IPPS final rule for details on the HSRVcc methodology and the 3-year transition blend from charge-based relative weights to cost-based relative weights (71 FR 47882 through 47898).)

In FY 2008, we adopted severity-based MS-DRGs, which increased the number of DRGs from 538 to 745. Many commenters raised concerns as to how the transition from charge-based weights to cost-based weights would continue with the introduction of new MS-DRGs. We decided to implement a 2-year transition for the MS-DRGs to coincide with the remainder of the transition to cost-based relative weights. In FY 2008, 50 percent of the relative weight for each DRG was based on the CMS DRG relative weight and 50 percent was based on the MS-DRG relative weight.

In FY 2009, the third and final year of the transition from charge-based weights to cost-based weights, we calculated the MS-DRG relative weights based on 100 percent of hospital costs. We refer readers to the FY 2007 IPPS final rule (71 FR 47882) for a more detailed discussion of our final policy for calculating the cost-based DRG relative weights and to the FY 2008 IPPS final rule with comment period (72 FR 47199) for information on how we blended relative weights based on the CMS DRGs and MS-DRGs.

2. Summary of the RTI Study of Charge Compression and CCR Refinement

As we transitioned to cost-based relative weights, some public commenters raised concerns about potential bias in the weights due to “charge compression,” which is the practice of applying a higher percentage charge markup over costs to lower cost items and services, and a lower percentage charge markup over costs to higher cost items and services. As a result, the cost-based weights would undervalue high-cost items and overvalue low-cost items if a single CCR is applied to items of widely varying costs in the same cost center. To address this concern, in August 2006, we awarded a contract to RTI to study the effects of charge compression in calculating the relative weights and to consider methods to reduce the variation in the CCRs across services within cost centers. RTI issued an interim draft report in January 2007 with its findings on charge compression (which was posted on the CMS Web site at: http://www.cms.hhs.gov/​reports/​downloads/​Dalton.pdf). In that report, RTI found that a number of factors contribute to charge compression and affect the accuracy of the relative weights. RTI's findings demonstrated that charge compression exists in several CCRs, most notably in the Medical Supplies and Equipment CCR.

In its interim draft report, RTI offered a number of recommendations to mitigate the effects of charge compression, including estimating regression-based CCRs to disaggregate the Medical Supplies Charged to Patients, Drugs Charged to Patients, and Radiology cost centers, and adding new cost centers to the Medicare cost report, such as adding a “Devices, Implants and Prosthetics” line under “Medical Supplies Charged to Patients” and a “CT Scanning and MRI” subscripted line under “Radiology-Diagnostics”. Despite receiving public comments in support of the regression-based CCRs as a means to immediately resolve the problem of charge compression, particularly within the Medical Supplies and Equipment CCR, we did not adopt RTI's recommendation to create additional regression-based CCRs. (For more details on RTI's findings and recommendations, we refer readers to the FY 2009 IPPS final rule (73 FR 48452).) RTI subsequently expanded its analysis of charge compression beyond inpatient services to include a reassessment of the regression-based CCR models using both outpatient and inpatient charge data. This interim report was made available in April 2008 during the public comment period on the FY 2009 IPPS proposed rule and can be found on RTI's Web site at: http://www.rti.org/​reports/​cms/​HHSM-500-2005-0029I/​PDF/​Refining_​Cost_​to_​Charge_​Ratios_​200804.pdf. The IPPS-specific chapters, which were separately displayed in the April 2008 interim report, as well as the more recent OPPS chapters, were included in the July 3, 2008 RTI final report entitled, “Refining Cost-to-Charge Ratios for Calculating APC [Ambulatory Payment Classification] and DRG Relative Payment Weights,” that became available at the time of the development of the FY 2009 IPPS final rule. The RTI final report can be found on RTI's Web site at: http://www.rti.org/​reports/​cms/​HHSM-500-2005-0029I/​PDF/​Refining_​Cost_​to_​Charge_​Ratios_​200807_​Final.pdf.

RTI's final report found that, under the IPPS and the OPPS, accounting improvements to the cost reporting data reduce some of the sources of aggregation bias without having to use regression-based adjustments. In general, with respect to the regression-based adjustments, RTI confirmed the findings of its March 2007 report that regression models are a valid approach for diagnosing potential aggregation bias within selected services for the IPPS and found that regression models are equally valid for setting payments under the OPPS.

RTI also noted that cost-based weights are only one component of a final prospective payment rate. There are other rate adjustments (wage index, IME, and DSH) to payments derived from the revised cost-based weights, and the cumulative effect of these components may not improve the ability of final payment to reflect resource cost. RTI endorsed short-term regression-based adjustments, but also concluded that more refined and accurate accounting data are the preferred long-term solution to mitigate charge compression and related bias in hospital cost-based weights. For a more detailed Start Printed Page 51502summary of RTI's findings, recommendations, and public comments we received on the report, we refer readers to the FY 2009 IPPS final rule (73 FR 48452 through 48453).

3. Summary of Policy Changes Made in FY 2011

In the FY 2009 IPPS/LTCH PPS final rule (73 FR 48458 through 48467), in response to the RTI's recommendations concerning cost report refinements, and because of RAND's finding that regression-based adjustments to the CCRs do not significantly improve payment accuracy, we discussed our decision to pursue changes to the cost report to split the cost center for Medical Supplies Charged to Patients into one line for “Medical Supplies Charged to Patients” and another line for “Implantable Devices Charged to Patients.” (We refer readers to the Web site: http://www.rand.org/​pubs/​working_​papers/​WR560/​, and the FY 2009 IPPS/LTCH PPS final rule for details on the RAND report (73 FR 48453 through 48457).) We acknowledged, as RTI had found, that charge compression occurs in several cost centers that exist on the Medicare cost report. However, as we stated in the FY 2009 IPPS/LTCH PPS final rule, we focused on the CCR for Medical Supplies and Equipment because RTI found that the largest impact on the MS-DRG relative weights could result from correcting charge compression for devices and implants. In determining what should be reported in these respective cost centers, we adopted the commenters' recommendation that hospitals should use revenue codes established by AHA's National Uniform Billing Committee to determine what should be reported in the “Medical Supplies Charged to Patients” and the “Implantable Devices Charged to Patients” cost centers. Accordingly, a new subscripted line 55.30 for “Implantable Devices Charged to Patients” was created in July 2009 as part of CMS' Transmittal 20 update to the existing cost report Form CMS-2552-96. This new subscripted cost center has been available for use for cost reporting periods beginning on or after May 1, 2009.

In the FY 2011 IPPS/LTCH PPS final rule (75 FR 50075 through 50080), we finalized our proposal to create standard cost centers for CT scans, MRI, and cardiac catheterization, and to require that hospitals report the costs and charges for these services under new cost centers on the revised Medicare cost report Form CMS 2552-10. As we discussed in the FY 2009 IPPS/LTCH PPS and CY 2009 OPPS/ASC proposed and final rules, RTI found that the costs and charges of CT scans, MRI, and cardiac catheterization differ significantly from the costs and charges of other services included in the standard associated cost center. RTI also concluded that both the IPPS and OPPS relative weights would better estimate the costs of those services if CMS were to add standard costs centers for CT scans, MRI, and cardiac catheterization in order for hospitals to report separately the costs and charges for those services and in order for CMS to calculate unique CCRs to estimate the cost from charges on claims data. (We refer readers to the FY 2011 IPPS/LTCH PPS final rule (75 FR 50075 through 50080) for a more detailed discussion on the reasons for the creation of standard cost centers for CT scans, MRI, and cardiac catheterization.) The new standard cost centers for MRI, CT scans, and cardiac catheterization are effective for cost report periods beginning on or after May 1, 2010, on the revised cost report Form CMS-2552-10. CMS issued the new hospital cost report Form CMS-2552-10 on December 30, 2010. The new cost report form can be accessed at the CMS Web site at: https://www.cms.gov/​Manuals/​PBM/​itemdetail.asp?​filterType=​none&​filterByDID=​-99&​sortByDID=​1&​sortOrder=​ascending&​itemID=​CMS021935&​intNumPerPage=​10. Once at this Web site, users should double click on “Chapter 40.”

4. Discussion for FY 2012

In the FY 2009 IPPS/LTCH PPS final rule (73 FR 48468), we stated that, due to what is typically a 3-year lag between the reporting of cost report data and the availability for use in ratesetting, we anticipated that we might be able to use data from the new “Implantable Devices Charged to Patients” cost center to develop a CCR for Implantable Devices Charged to Patients in the FY 2012 or FY 2013 IPPS rulemaking cycle. Specifically, we stated, “Because there is approximately a 3-year lag between the availability of cost report data for IPPS and OPPS rate-setting purposes in a given fiscal year, we may be able to derive two distinct CCRs, one for medical supplies and one for devices, for use in calculating the FY 2012 or FY 2013 IPPS relative weights and the CY 2012 or CY 2013 OPPS relative weights” (73 FR 48468). However, as noted in the FY 2010 IPPS/LTCH PPS final rule (74 FR 43782), due to delays in the issuance of the revised cost report CMS 2552-10, a new CCR for Implantable Devices Charged to Patients may not be available until FY 2013. Similarly, when we finalized the decision in the FY 2011 IPPS/LTCH PPS final rule to add new cost centers for MRI, CT scans, and cardiac catheterization, we explained that data from any new cost centers that may be created will not be available until at least 3 years after they are first used (75 FR 50077). That is, in the FY 2011 IPPS/LTCH PPS final rule (75 FR 50077), we stated that the data from the standard cost centers for MRI, CT scans, and cardiac catheterization respectively, would not even be available for possible use in calculating the relative weights earlier than 3 years after Form CMS-2552-10 becomes available. We further stated that, at that time, we would analyze the data and determine if it is appropriate to use those data to create distinct CCRs from these cost centers for use in the relative weights for the respective payment systems. We also reassured public commenters that there was no need for immediate concern regarding possible negative payment impacts on MRI and CT scans under the IPPS and the OPPS because the cost report data that would be used for the calculation of the relative weights were at least 3 years from being available. We stated that we will first thoroughly analyze and run impacts on the data and provide the public with the opportunity to comment before distinct CCRs for MRI and CT scans would be finalized for use in the calculation of the relative weights. We also urged all hospitals to properly report their costs and charges for MRI, CT scans, and all other services so that, in several years' time, we will have reliable data from all hospitals on which to base a decision as to whether to incorporate additional CCRs into the relative weight calculation (75 FR 50077).

Accordingly, in preparation for the FY 2012 IPPS/LTCH PPS proposed rule, we assessed the availability of data in the “Implantable Devices Charged to Patients” cost center. In order to develop a robust analysis regarding the use of cost data from the “Implantable Devices Charged to Patients” cost center, it was necessary to have a critical mass of cost reports filed with data in this cost center. The cost center for “Implantable Devices Charged to Patients” is effective for cost reporting periods beginning on or after May 1, 2009. While developing the FY 2012 IPPS/LTCH PPS proposed rule, we checked the availability of FY 2009 cost reports in the December 31, 2010 quarter ending update of HCRIS, which was the latest upload of FY 2009 cost report data that we could use for the proposed rule. We determined that there were only 437 hospitals (out of approximately 3,500 IPPS hospitals) Start Printed Page 51503that completed the “Implantable Devices Charged to Patients” cost center. We did not believe that this was a sufficient amount of data from which to generate a meaningful analysis in this particular situation. Therefore, we did not propose to use data from the “Implantable Devices Charged to Patients” cost center to create a distinct CCR for Implantable Devices Charged to Patients for use in calculating the MS-DRG relative weights for FY 2012. We indicated that we would reassess the availability of data for the “Implantable Devices Charged to Patients” cost center, and the “MRI, CT Scans, and Cardiac Catheterization” cost centers, for the FY 2013 IPPS rulemaking cycle and, if appropriate, we would propose to create a distinct CCR at that time.

Comment: Commenters requested that CMS reconsider its position to not use the data from the implantable device cost center to calculate the MS-DRG relative weights for FY 2012. The commenter noted that during the development of the proposed rule, CMS found that only 437 hospitals out of approximately 3,500 IPPS hospitals reported data in the “Implantable Devices Charged to Patients” cost center of the Medicare hospital cost report based on the December 2010 update of FY 2009 HCRIS. One commenter found, while reviewing the March 2011 update of FY 2009 HCRIS, that there are approximately 800 hospitals that are reporting cost information in the implantable medical device cost center.

Another commenter stated that, based on the December 2010 update of FY 2009 HCRIS, 804 hospitals reported data on either line 55 (Medical Supplies Charged to Patients) or line 55.30 (Implantable Devices Charged to Patients), and in the March 2011 update of FY 2009 HCRIS, approximately 1,600 hospitals were reporting data on either of those lines. As such, the commenters believed there is now a sufficient amount of data to use the implantable device CCR to calculate the relative weights and improve accuracy of the payment rates. Commenters also noted that if we do not use the implantable device cost center to calculate the FY 2012 relative weights, there will be enough data to develop an implantable device CCR for FY 2013.

One commenter suggested that CMS adopt regression-based CCRs to calculate the FY 2012 MS-DRG relative weights because CMS does not yet have sufficient cost report data to develop the implantable device CCR. This would allow CMS to address charge compression immediately and improve payment accuracy for medical devices and implantables.

Response: In the FY 2012 IPPS/LTCH PPS proposed rule, we indicated that we did not have sufficient cost report data to develop the kind of robust analysis that we assured the public we would provide prior to implementing a new CCR for implantable medical devices. Therefore, we stated that we will reassess the availability of data for FY 2013. We have reviewed the availability of FY 2009 cost reports in the March 31, 2011 quarter ending update of HCRIS, which is the latest upload of FY 2009 cost report data that we currently have available. We have determined that, for cost reporting periods beginning on or after May 1, 2009, the effective date of line 55.30 (Implantable Devices Charged to Patients), there are 961 hospitals (out of approximately 3,500 IPPS hospitals) that have completed the “Implantable Devices Charged to Patients” cost center. This represents an increase of 524 compared to the 437 entries that we found when developing the FY 2012 proposed rule. Regardless of the number of hospitals currently reporting data in the “Implantable Devices Charged to Patients” cost center, the data that were available at the time we were developing our proposed policies for FY 2012 were insufficient, and we believe it would be inappropriate to finalize a specific CCR for implantable devices charged to patients for FY 2012 without an opportunity for the public to review and comment on our analysis. Rather, we believe that it is appropriate to wait until FY 2013, when we hope to be able to provide a proper impact analysis of the addition of a CCR for implantable devices charged to patients in the relative weights calculation. Accordingly, we are not implementing a regression-based CCR for implantable devices at this time. Therefore, we are not implementing any new CCRs for use in the relative weights calculation for FY 2012.

Comment: Commenters urged CMS to increase education efforts to encourage faster hospital adoption of the use of the implantable medical device cost center. Commenters noted that, at the time of the development of the FY 2012 IPPS/LTCH PPS proposed rule, only 437 hospitals had completed the implantable device cost center, and this demonstrated that CMS needs to undertake additional outreach to hospitals to ensure that they appropriately complete the Medicare hospital cost report.

Response: We agree that it is important that hospitals understand how to accurately report data in the “Implantable Devices Charged to Patients” cost center, and we have worked to add more clarity to the cost report instructions. However, we do believe that the December 31, 2010 update of HCRIS reflected relatively few entries for this cost center because the corresponding cost center line was only available for use for cost reporting periods beginning on or after May 1, 2009. This effective date was somewhat awkward in terms of timing and would not have applied to a large number of hospitals whose data would not be evident to CMS until the March 31, 2011 update to HCRIS.

Comment: Commenters suggested that CMS monitor the accuracy of the data reported in the implantable device cost center on the Medicare hospital cost report. Commenters urged CMS to impress the importance upon the Medicare Administrative Contractors (MACs) of establishing a mechanism to audit the implantable device cost center to ensure that the costs and charges are appropriately reported. One commenter suggested that CMS require MACs to require hospitals to explain why they had not reported in the implantable device cost center. In addition, the commenters suggested that CMS reissue instructions, similar to Transmittal 321, dated February 28, 2009, to the MACs with recommendations that MACs develop an audit program for line 55 (Medical Supplies Charged to Patients) and line 55.30 (Implantable Devices Charged to Patients). Commenters noted that potential audit mechanisms include identifying the presence of revenue codes 274, 275, 276 and 624 reported on the PS&R used to settle the cost report, and comparing the CCR based on line 55.30 to the CCR based on line 55. In addition, one commenter suggested that the cost reporting software be modified to create a level 1 error in the case where no data is reported on line 55.30 (Implantable Devices Charged to Patients) to compel hospitals to report that information.

Response: We agree with the commenters that the cost reporting lines, whether they are for Implantable Devices Charged to Patients, MRI, CT scans, cardiac catheterization, or any others, should be subject to greater audit scrutiny from the Medicare contractors. The new Medicare cost report form CMS-2552-10, on line 121 of Worksheet S-2, Part I, asks “Did this facility incur and report costs for implantable devices charged to a patient? Enter in column 1 “Y” for yes or “N” for no.” All hospital types, including non-IPPS hospitals, CAHs, and Maryland inpatient short-term acute hospitals, are required to properly report their costs and charges, and if the answer to this question is Y for any type of hospital, then line 72, column 26, of Start Printed Page 51504Worksheet B, Part I must be greater than 0, with an accurate amount that reflects the hospital's costs for implantable devices charged to patients. In addition, we note that a Level 1 edit on the CMS-2552-10 form already exists that ensures that line 72, column 26, of Worksheet B, Part I (Implantable Devices Charged to Patients on Worksheet A of the CMS-2552-10 form) is greater than 0 if Worksheet S-2, Part I, line 121 is “Y”. The edit is also set up for the reverse scenario; that is, if there is an amount on Worksheet B, Part I, line 72, column 26, then the response on Worksheet S-2, Part I, line 121 must be “Y.”

Comment: Some commenters supported not making major refinements to the calculation of MS-DRG relative weights. Commenters valued the consistency, transparency, and predictability of the calculation of the MS-DRG relative weights.

Response: We appreciate the commenters' support for our proposal of not making major refinements to the MS-DRG relative weights in the absence of sufficient data from which to create new CCRs. We also value consistency, transparency, and predictability in the calculation of the MS-DRG relative weights.

Comment: One commenter supported our decision to create standard cost centers for CT, MRI, and cardiac catheterization for hospitals to report their costs and charges on the Medicare hospital cost report. In addition, the commenter supported urgently adopting the use of the CT, MRI, and cardiac catheterization cost centers in calculating the MS-DRG relative weights.

Response: We appreciate the commenter's support. As we stated in the proposed rule, we will reassess the availability of data for the “Implantable Devices Charged to Patients” cost center, and the “MRI, CT Scans, and Cardiac Catheterization” cost centers, for the FY 2013 IPPS rulemaking cycle, and, if appropriate, we will propose to create distinct CCRs for these cost centers at that time.

Comment: One commenter noted that allogeneic stem cell acquisition charges are reported using revenue code 0819 for “Other Organ Acquisition.” However, the commenter added, this revenue code is not part of the 15 national cost center CCRs used in the calculation of the MS-DRG relative weights. In addition, the commenter stated, the Medicare hospital cost report does not specifically identify a cost center for bone marrow acquisition costs. The commenter requested direction on capturing these acquisition costs and how those costs and charges are accounted for in the MS-DRG relative weight calculation.

Response: We appreciate this comment, but note that it is not within the scope of the issues discussed in the FY 2012 IPPS/LTCH PPS proposed rule regarding the calculation of the MS-DRG relative weights. However, we also note that allogeneic bone marrow transplant charges are included in the 15 CCRs, specifically as part of the Blood and Blood Products CCR and that CCR's associated cost centers on the cost report.

Comment: One commenter stated that CMS should specifically exclude sleeve gastrectomy charges derived from the Medicare claims data and sleeve gastrectomy costs from the Medicare hospital cost report data from the MS-DRG weight recalibrations. The commenter noted that CMS excludes Medicare claims for services that are non-covered for Medicare beneficiaries from the MS-DRG relative weight calculation and, therefore, sleeve gastrectomy charges should be excluded. In addition, the commenter recommended that CMS remind providers that Medicare cost reports should exclude charges and costs associated with the sleeve gastrectomy procedure, as it is a noncovered service.

Response: We appreciate this comment, but note that it is not within the scope of the issues discussed in the FY 2012 IPPS/LTCH PPS proposed rule regarding the calculation of the MS-DRG relative weights. We will take this issue into consideration for future rulemaking.

Comment: One commenter suggested that CMS evaluate the MedPAR claims database to ensure that it is not using Medicare managed care claims data to calculate the MS-DRG relative weights, as CMS has proposed to only use fee-for-service claims to calculate the MS-DRG relative weights.

Response: We appreciate this comment, but note that it is not within the scope of the issues discussed in the FY 2012 IPPS/LTCH PPS proposed rule regarding the calculation of the MS-DRG relative weights. However, we note that it is already our policy to exclude managed care claims from the MS-DRG relative weights calculation.

After consideration of the public comments received, we are not implementing any new CCRs for use in the relative weights calculation for FY 2012.

F. Preventable Hospital-Acquired Conditions (HACs), Including Infections

1. Background

a. Statutory Authority

Section 1886(d)(4)(D) of the Act addresses certain hospital-acquired conditions (HACs), including infections. Section 1886(d)(4)(D) of the Act specifies that, by October 1, 2007, the Secretary was required to select, in consultation with the Centers for Disease Control and Prevention (CDC), at least two conditions that: (a) are high cost, high volume, or both; (b) are assigned to a higher paying MS-DRG when present as a secondary diagnosis (that is, conditions under the MS-DRG system that are CCs or MCCs); and (c) could reasonably have been prevented through the application of evidence-based guidelines. Section 1886(d)(4)(D) of the Act also specifies that the list of conditions may be revised, again in consultation with CDC, from time to time as long as the list contains at least two conditions.

Section 1886(d)(4)(D)(iii) of the Act requires that hospitals, effective with discharges occurring on or after October 1, 2007, submit information on Medicare claims specifying whether diagnoses were present on admission (POA). Section 1886(d)(4)(D)(i) of the Act specifies that, effective for discharges occurring on or after October 1, 2008, Medicare no longer assigns an inpatient hospital discharge to a higher paying MS-DRG if a selected condition is not POA. Thus, if a selected condition that was not POA manifests during the hospital stay, it is considered a HAC and the case is paid as though the secondary diagnosis was not present. However, even if a HAC manifests during the hospital stay, if any nonselected CC/MCC appears on the claim, the claim will be paid at the higher MS-DRG rate. Under the HAC payment policy, all CCs/MCCs on the claim must be HACs in order to generate a lower MS-DRG payment. In addition, Medicare continues to assign a discharge to a higher paying MS-DRG if a selected condition is POA.

The POA indicator reporting requirement and the HAC payment provision apply to IPPS hospitals only. Non-IPPS hospitals, including CAHs, LTCHs, IRFs, IPFs, cancer hospitals, children's hospitals, hospitals in Maryland operating under waivers, rural health clinics, federally qualified health centers, RNHCIs, and Department of Veterans Affairs/Department of Defense hospitals, are exempt from POA reporting and the HAC payment provision. Throughout this section, the Start Printed Page 51505term “hospital” refers to an IPPS hospital.

The HAC provision found in section 1886(d)(4)(D) of the Act is part of an array of Medicare tools that we are using to promote increased quality and efficiency of care. Those tools include measuring performance, using payment incentives, publicly reporting performance results, applying national and local coverage policy decisions, enforcing conditions of participation, and providing direct support for providers through Quality Improvement Organization (QIO) activities. The application of these tools, such as this HAC provision, is transforming Medicare from a passive payer to an active purchaser of higher value health care services. We are applying these strategies for inpatient hospital care and across the continuum of care for Medicare beneficiaries.

This effort is highly compatible with the underlying purposes as well as existing structural features of Medicare's IPPS. Under the IPPS, hospitals are encouraged to treat patients efficiently because they receive the same DRG payment for stays that vary in length and in the services provided, which gives hospitals an incentive to avoid unnecessary costs in the delivery of care. In some cases, conditions acquired in the hospital do not generate higher payments than the hospital would otherwise receive for cases without these conditions. To this extent, the IPPS encourages hospitals to avoid complications.

However, the treatment of certain conditions can generate higher Medicare payments in two ways. First, if a hospital incurs exceptionally high costs treating a patient, the hospital stay may generate an outlier payment. Because the outlier payment methodology requires that hospitals experience large losses on outlier cases before outlier payments are made, hospitals have an incentive to prevent outliers. Second, under the MS-DRG system that took effect in FY 2008 and that has been refined through rulemaking in subsequent years, certain conditions can generate higher payments even if the outlier payment requirements are not met. Under the MS-DRG system, there are currently 259 sets of MS-DRGs that are split into 2 or 3 subgroups based on the presence or absence of a CC or an MCC. The presence of a CC or an MCC generally results in a higher payment. However, since we implemented the HAC provisions, if a secondary diagnosis acquired during a hospital stay is a HAC and no other CCs or MCCs are present, the hospital receives a payment under the MS-DRGs as if the HACs were not present. (We refer readers to section II.D. of the FY 2008 IPPS final rule with comment period for a discussion of DRG reforms (72 FR 47141).)

b. HAC Selection

Beginning in FY 2007, we have set forth proposals, and solicited and responded to public comments, to implement section 1886(d)(4)(D) of the Act through the IPPS annual rulemaking process. For specific policies addressed in each rulemaking cycle, we direct readers to the following publications: The FY 2007 IPPS proposed rule (71 FR 24100) and final rule (71 FR 48051 through 48053); the FY 2008 IPPS proposed rule (72 FR 24716 through 24726) and final rule with comment period (72 FR 47200 through 47218); the FY 2009 IPPS proposed rule (73 FR 23547) and final rule (73 FR 48471); the FY 2010 IPPS/RY 2010 LTCH PPS proposed rule (74 FR 24106) and final rule (74 FR 43782); and the FY 2011 IPPS/LTCH PPS proposed rule (75 FR 23880) and final rule (75 FR 50080). A complete list of the 10 current categories of HACs is included in section II.F.2. of this preamble.

In the FY 2011 IPPS/LTCH PPS final rule (75 FR 50080 through 50101), we did not add any categories of additional HACs or make any changes to policies already established under the authority of section 1886(d)(4)(D) of the Act.

c. Collaborative Process

In establishing the HAC payment policy under section 1886(d)(4)(D) of the Act, our experts have worked closely with public health and infectious disease professionals from across the Department of Health and Human Services, including CDC, the Agency for Healthcare Research and Quality (AHRQ), and the Office of Public Health and Science (OPHS), to identify the candidate preventable HACs, review comments, and select HACs. CMS and CDC also have collaborated on the process for hospitals to submit a POA indicator for each diagnosis listed on IPPS hospital Medicare claims and on the payment implications of the various POA reporting options. In addition, as discussed below, we have used rulemaking and Listening Sessions to obtain public input.

d. Application of HAC Payment Policy to MS-DRG Classifications

As described above, in certain cases, application of the HAC payment policy provisions can result in MS-DRG reassignment to a lower paying MS-DRG. The following diagram portrays the logic of the HAC payment policy provision as adopted in the FY 2008 IPPS final rule with comment period (72 FR 47200) and in the FY 2009 IPPS final rule (73 FR 48471):

Start Printed Page 51506

e. Public Input Regarding Selected and Potential Candidate HACs

In the FY 2011 IPPS/LTCH PPS final rule (75 FR 50080 through 50101), we did not add or remove categories of HACs, nor did we make any changes to previously established policies. However, we continue to encourage public dialogue about refinement of the HAC list.

Given the timeliness of the HAC discussion, particularly when considered within the context of recent legislative health care reform initiatives, we remain eager to engage in an ongoing public dialogue about the various aspects of this policy. We plan to continue to include updates and findings from the Research Triangle Institute, International (RTI) evaluation on CMS' Hospital-Acquired Conditions and Present on Admission Indicator Web site available at: http://www.cms.hhs.gov/​HospitalAcqCond/​.

f. POA Indicator Reporting

Collection of POA indicator data is necessary to identify which conditions were acquired during hospitalization for the HAC payment provision as well as for broader public health uses of Medicare data. In the FY 2011 IPPS/LTCH PPS proposed rule (75 FR 23381) (and as noted in the FY 2011 IPPS/LTCH PPS final rule (75 FR 50081)), we listed the instructions and change requests that were issued to IPPS hospitals and also to non-IPPS hospitals regarding the submission of POA indicator data for all diagnosis codes on Medicare claims and the processing of non-PPS claims We also indicated that specific instructions on how to select the correct POA indicator for each diagnosis code were included in the ICD-9-CM Official Guidelines for Coding and Reporting, available on the CDC Web site at: http://www.cdc.gov/​nchs/​data/​icd9/​icdguide10.pdf. We reiterate that additional information regarding POA indicator reporting and application of the POA reporting options is available on the CMS Web site at: http://www.cms.gov/​HospitalAcqCond/​.

In preparation for the transition to the ICD-10-CM/PCS code set effective October 1, 2013, further information regarding the use of the POA indictor with the ICD-10-CM/PCS classification as it pertains to the HAC policy will be discussed in future rulemaking. In the meantime, we encourage readers to review the educational materials and draft code sets currently available for ICD-10-CM/PCS at the CMS Web site at: http://www.cms.gov/​ICD10/​. In addition, the draft ICD-10-CM/PCS coding guidelines can be viewed at the CDC Web site at: http://www.cdc.gov/​nchs/​data/​icd9/​10cmguidelines2011.

Historically, we have not provided coding advice. Rather, we collaborate with the American Hospital Association (AHA) through the Coding Clinic for ICD-9-CM. We will continue to collaborate with the AHA to promote the Coding Clinic for ICD-9-CM as the source for coding advice about the POA indicator.

As discussed in previous IPPS proposed and final rules, there are five POA indicator reporting options, as defined by the ICD-9-CM Official Guidelines for Coding and Reporting:

IndicatorDescriptor
YIndicates that the condition was present on admission.
WAffirms that the hospital has determined that, based on data and clinical judgment, it is not possible to document when the onset of the condition occurred.
NIndicates that the condition was not present on admission.
UIndicates that the documentation is insufficient to determine if the condition was present at the time of admission.
1Signifies exemption from POA reporting. CMS established this code as a workaround to blank reporting on the electronic 4010A1. A list of exempt ICD-9-CM diagnosis codes is available in the ICD-9-CM Official Guidelines for Coding and Reporting.

In the FY 2009 IPPS final rule (73 FR 48486 through 48487), we adopted final payment policies to: (1) pay the CC/MCC MS-DRGs for those HACs coded with “Y” and “W” indicators; and (2) not pay the CC/MCC MS-DRGs for those Start Printed Page 51507HACs coded with “N” and “U” indicators.

Beginning on or after January 1, 2011, hospitals are required to begin reporting POA indicators using the 5010 electronic transmittal standards format. The 5010 format removes the need to report a POA indicator of “1” for codes that are exempt from POA reporting. However, for claims that continue to be submitted using the 4010 electronic transmittal standards format, the POA indicator of “1” is still necessary because of reporting restrictions from the use of the 4010 electronic transmittal standards format.

Hospitals that began reporting with the 5010 format on and after January 1, 2011, can no longer report a POA indicator of “1” for POA exempt codes. The POA field should instead be left blank for codes exempt from POA reporting. We have issued CMS instructions on this reporting change as a One-Time Notification, Pub. No. 100-20, Transmittal No. 756, Change Request 7024, effective on August 13, 2010. These instructions, entitled “5010 Implementation-Changes to Present on Admission (POA) Indicator `1' and the K3 Segment,” can be located at the following link on the CMS Web site: http://www.cms.gov/​manuals/​downloads/​Pub100_​20.pdf.

We are continuing our efforts to clarify instructions regarding use of the POA indicator. As discussed in the FY 2011 IPPS/LTCH PPS final rule (75 FR 50088), we received public comments in response to the FY 2011 IPPS/LTCH PPS proposed rule that expressed concern about the accuracy of reporting of POA indicators for HACs related to intracranial injury with loss of consciousness. The codes for loss of consciousness are listed in the Falls and Trauma HAC category, within the “Intracranial Injury” subcategory. Because loss of consciousness is a component of intracranial injuries rather than a separate condition, we agreed that the POA guidelines that instructed coders to assign an “N” indicator if any part of the combination code was not present on admission did not apply to the loss of consciousness codes. As a member of the Editorial Advisory Board for the Coding Clinic for ICD-9-CM, we worked with the American Hospital Association (AHA), American Health Information Management Association (AHIMA), and CDC to provide additional clarification on how these conditions should be reported. Additional guidance on how these cases should be reported can be found in AHA's Coding Clinic for ICD-9-CM, 2nd Quarter 2010, “Frequently Asked POA Questions” section. That publication clarified the POA reporting for patients in whom a single code captures the fact that the patient was admitted as a result of a head injury and then subsequently lost consciousness after the admission. For these cases, we clarified that the POA indicator assigned should be “Y,” indicating that the head injury and resulting loss of consciousness occurred prior to (and was present on) admission.

We expect that this clarification will lead to greater consistency and accuracy in POA indicator reporting for these conditions. We look forward to continuing our efforts as part of the AHA's Editorial Advisory Board for Coding Clinic for ICD-9-CM to provide guidance on accuracy of coding and the reporting of POA indicators. Hospitals look to this publication to provide detailed guidance on ICD-9-CM coding and POA reporting. We encourage hospitals to send any other questions about ICD-9-CM codes or POA indicator selection to the AHA so that the Editorial Advisory Board can continue its role of providing instruction on the accurate selection and reporting of both ICD-9-CM codes and POA indicators.

2. Additions and Revisions to the HAC Policy for FY 2012

a. Contrast-Induced Acute Kidney Injury

In the FY 2012 IPPS/LTCH PPS proposed rule (76 FR 25813 and 25814), we discussed our analysis for a proposed new condition as a possible candidate for selection for FY 2012 under section 1886(d)(4)(D) of the Act. As described in more detail in section II.F.1.a. of this preamble, each HAC must be: (1) High cost, high volume, or both; (2) assigned to a higher paying MS-DRG when present as a secondary diagnosis (that is, conditions under the MS-DRG system that are CCs or MCCs); and (3) could reasonably have been prevented through the application of evidence-based guidelines. We also discussed other considerations relating to the selection of a HAC, including any administrative or operational issues associated with a proposed condition. For example, the condition may only be able to be identified by multiple codes, thereby requiring the development of special GROUPER logic to also exclude similar or related ICD-9-CM codes from being classified as a CC or an MCC. Similarly, a condition acquired during a hospital stay may arise from another condition that the patient had prior to admission, making it difficult to determine whether the condition was reasonably preventable. We invited public comment on clinical, coding, and prevention issues on our proposal to add contrast-induced acute kidney injury as a condition subject to the HAC payment provision for FY 2012 (for discharges occurring on or after October 1, 2011).

Contrast-induced acute kidney injury is a significant complication of the use of iodinated contrast media and accounts for a large number of cases of hospital-acquired acute kidney injury cases. A published study has shown that renal failure associated with contrast administration is correlated with up to 11 percent of cases of renal failure that occur in hospitals (Nash, K., Hafeez, A., et al: “Hospital-Acquired Renal Insufficiency,” American Journal on Kidney Disease, 2002, Vol. 39, No. 5, pp. 930-936). Patients who experience acute kidney injury have an increased risk of inhospital mortality even after adjustments for disease comorbidities (McCullough, J.: “Contrast-Induced Acute Kidney Injury,” Journal of the American College of Cardiology, 2008, Vol. 51, No. 15, pp. 1419-1428). Data suggest that the risk for mortality extends beyond the period of hospitalization, resulting in 1-year and 5-year mortality rates significantly higher than those patients who have not developed acute kidney injury. In addition, contrast-induced acute kidney injury is associated with an increased incidence of myocardial infarction, bleeding requiring transfusion, and prolonged hospital stays (McCullough, J.: American Journal of Medicine, 1997, Vol. 103, pp. 368-375). We note that “acute kidney injury” is a new terminology endorsed by the National Kidney Foundation to replace “acute renal failure.”

There is not a unique code that identifies kidney injury. However, kidney injury can be identified as a subset of discharges with ICD-9-CM diagnosis code 584.9 (Acute kidney failure, unspecified). As we discussed in the FY 2012 IPPS/LTCH PPS proposed rule, our clinical advisors believe that diagnosis code 584.9, in combination with the associated procedure codes listed below, can accurately identify contrast-induced acute kidney injury:

  • 88.40 (Arteriography using contrast material, unspecified site)
  • 88.41 (Arteriography of cerebral arteries)
  • 88.42 (Aortography)
  • 88.43 (Arteriography of pulmonary arteries)
  • 88.44 (Arteriography of other intrathoracic vessels)
  • 88.45 (Arteriography of renal arteries)
  • 88.46 (Arteriography of placenta)
  • 88.47 (Arteriography of other intra-abdominal arteries)Start Printed Page 51508
  • 88.48 (Arteriography of femoral and other lower extremity arteries)
  • 88.49 (Arteriography of other specified sites)
  • 88.50 (Angiocardiography, not otherwise specified)
  • 88.51 (Angiocardiography of venae cavae)
  • 88.52 (Angiocardiography of right heart structures)
  • 88.53 (Angiocardiography of left heart structures)
  • 88.54 (Combined right and left heart angiocardiography)
  • 88.55 (Coronary arteriography using a single catheter)
  • 88.56 (Coronary arteriography using two catheters)
  • 88.57 (Other and unspecified coronary arteriography)
  • 88.58 (Negative-contrast cardiac roentgenography)
  • 88.59 (Intra-operative coronary fluorescence vascular angiography)
  • 88.60 (Phlebography using contrast material, unspecified site)
  • 88.61 (Phlebography of veins of head and neck using contrast material)
  • 88.62 (Phlebography of pulmonary veins using contrast materal)
  • 88.63 (Phlebography of other intrathoracic veins using contrast material)
  • 88.64 (Phlebography of the portal venous system using contrast material)
  • 88.65 (Phlebography of other intra-abdominal veins using contrast material)
  • 88.66 (Phlebography of femoral and other lower extremity veins using contrast material)
  • 88.67 (Phlebography of other specified sites using contrast material)
  • 87.71 (C.A.T. of kidney)
  • 87.72 (Other nephrotomogram)
  • 87.73 (Intravenous pyelogram)
  • 87.74 (Retrograde pyelogram)
  • 87.75 (Percutaneous pyelogram)

We proposed to identify contrast-induced acute kidney injury with diagnosis code 584.9 in combination with one or more of the above associated procedure codes.

We also considered identifying contrast-induced acute kidney injury through the use of external injury codes, or E-codes. Code E947.8 (Other drugs and medicinal substances) has an inclusion term “Contrast media used for diagnostic x-ray procedures” to identify the use of contrast. However, as we noted in the proposed rule, we do not currently require the reporting of E-codes for the HAC payment provisions under the IPPS. Therefore, we were unable to rely on the identification of contrast-induced acute kidney injury through E-codes on Medicare IPPS HACs claims.

Section 1886(d)(4)(D) of the Act requires that a HAC be a condition that is “high cost, high volume, or both.” In FY 2009, there were 38,324 inpatient discharges coded with acute renal failure as specified by ICD-9-CM diagnosis code 584.9 reported as not present on admission (POA status = N) when reported with one of the above procedure codes submitted through Medicare claims. The cases had an average charge of $29,122 for the entire hospital stay. Studies suggest the additional average cost per day for a patient who has acquired contrast-induced acute kidney injury is $2,654. Other data report patients stays increases by 3.75 days once they have acquired the diagnosis (Subramanian, S.: “Economic Burden of Contrast-Induced Nephropathy: Implications for Prevention Strategies,” Journal of Medical Economics, 2007, Vol. 10, pp. 119-134).

There are widely recognized guidelines for the prevention of acute kidney injury that address the prevention of contrast-induced acute kidney injury, and we believe the condition is reasonably preventable. One of these guidelines can be found at: http://www.renal.org/​Clinical/​GuidelinesSection/​AcuteKidneyInjury.aspx.

The condition of contrast-induced acute kidney injury as specified in our proposal is a CC under the MS-DRGs.

We indicated in the proposed rule that we had not identified any additional administrative or operational difficulties with proposing this condition as a HAC. We invited public comment on whether contrast-induced acute kidney injury meets the requirements set forth under section 1886(d)(4)(D) of the Act, as well as other coding and prevention issues associated with our proposal to add this injury as a condition subject to the HAC payment provision for FY 2012 (for discharges occurring on or after October 1, 2011). We also indicated that we were particularly interested in receiving comments on the degree to which contrast-induced acute kidney injury is reasonably preventable through the application of evidence-based guidelines.

Comment: One commenter supported CMS' proposal to add contrast-induced acute kidney injury as a HAC under section 1886(d)(4)(D) of the Act. The commenter applauded the inclusion of contrast-induced acute kidney injury to the HAC policy for FY 2012, and encouraged CMS to continue to expand and refine the HACs and categories.

Response: We appreciate the commenter's support.

Comment: Many commenters discussed their concerns regarding the specificity and sensitivity of the ICD-9-CM codes proposed to identify the proposed new contrast-induced acute kidney injury HAC. The commenters believed that these codes would not solely capture contrast-induced acute kidney injury and would capture other conditions as well. The commenters expressed concern about the specificity of the current ICD-9-CM code 584.9 in reliably identifying cases of acute kidney injury that occurred due to a specific diagnosis instead of acute kidney injury that is believed to occur secondary to being correlated with exposure to contrast. The commenter stated that, for example, a patient admitted to a hospital could experience drug-induced kidney injury that has resolved; later during that hospital stay, the patient has a subsequent angiographic procedure. Under our proposed methodology, the commenter added, this patient would be erroneously identified as having contrast-induced acute kidney injury.

Some commenters suggested that CMS use E-codes, which identify injuries, while others did not support the use of E-codes because they are not consistently coded for Medicare billing purposes. Commenters further noted that the list of ICD-9-CM procedure codes proposed to assist in identifying the use of contrast as the reason for the acute kidney injury occurring are often not reported on hospital claims. The commenters explained that most of the codes do not represent procedures affecting payment, are not required, and, therefore, are not reported.

Other commenters recommended waiting to finalize this proposed candidate condition until the ICD-10 code set is implemented. The commenters suggested that a unique code to identify and describe contrast-induced acute kidney injury could be proposed in ICD-10, and this would eliminate the coding limitations that currently exist for this condition in ICD-9-CM.

Response: We acknowledge the commenters' concerns regarding the current ICD-9-CM coding issues surrounding contrast-induced acute kidney injury, and that our proposal could inadvertently include claims for beneficiaries who experience acute kidney injury that may not be contrast-induced. We note that, as discussed in the FY 2008 IPPS final rule with comment period (72 FR 47216), under 42 CFR 412.60(d), a hospital has 60 days after the date of the notice of the initial Start Printed Page 51509assignment of a discharge to a DRG to request a review of that assignment. The hospital may submit additional information as a part of its request. A hospital that believes a discharge was assigned to the incorrect DRG as a result of application of the payment adjustment for HACs may request review of the DRG assignment by its fiscal intermediary or MAC. However, we also recognize that it is important to be as precise as possible in specifying which codes to use to identify a HAC, and that a lack of precision could increase hospitals' administrative burden in pursuing these appeals.

In addition, we recognize that E-codes do capture injuries and could offer more precision in identifying contrast-induced acute kidney injury than our proposal. We also agree with the commenters who pointed out that E-codes are currently not required for Medicare billing purposes and, therefore, are inconsistently reported on claims. We note further that because these codes are not required for Medicare IPPS payment purposes, MS-DRG assignments do not currently take E-codes into account.

We also appreciate the comments that pointed out that the procedure codes identified in our proposal are often not reported. We note that commenters asserted that these codes were not reported because they did not affect payment. We are concerned that the potential for reduced payment would create a further disincentive to include these procedure codes on Medicare claims. As we stated earlier, we recognize that it is important to be as precise as possible in the interest of payment accuracy in specifying which codes to use to identify a HAC.

We also agree that ICD-10 will offer a greater degree of specificity. Currently, no code exists within ICD-10 that would exclusively capture contrast-induced acute kidney injury. We note that, as discussed in the FY 2012 IPPS/LTCH proposed rule (76 FR 25843), and in section II.G.13.b. of this final rule, a partial code freeze was discussed at multiple meetings of the ICD-9-CM Coordination and Maintenance Committee, and public comment was actively solicited. At the September 15-16, 2010 meeting, an announcement was made that the ICD-9-CM Coordination and Maintenance Committee will implement a partial freeze of the ICD-9-CM and ICD-10 (ICD-10-CM and ICD-10-PCS) codes prior to the implementation of ICD-10 on October 1, 2013. There was considerable support for this partial freeze. The partial freeze will be implemented as follows:

  • The last regular, annual updates to both ICD-9-CM and ICD-10 code sets will be made on October 1, 2011.
  • On October 1, 2012, there will be only limited code updates to both the ICD-9-CM and ICD-10 code sets to capture new technologies and diseases as required by section 503(a) of Public Law 108-173.
  • On October 1, 2013, there will be only limited code updates to ICD-10 code sets to capture new technologies and diagnoses as required by section 503(a) of Public Law 108-173. There will be no updates to ICD-9-CM, as it will no longer be used for reporting.
  • On October 1, 2014, regular updates to ICD-10 will begin.

The ICD-9-CM Coordination and Maintenance Committee will continue to meet twice a year during the partial freeze. At these meetings, the public will be asked to comment on whether or not requests for new diagnosis or procedure codes should be created based on the criteria of the need to capture a new technology or disease. Any code requests that do not meet the criteria will be evaluated for implementation within ICD-10 on and after October 1, 2014, once the partial freeze has ended.

In summary, we agree with the commenters' recommendations regarding coding and are deferring decision making regarding the inclusion of contrast-induced acute kidney injury as a HAC until such a time when improved coding is available.

Comment: Several commenters submitted comments pertaining to the sufficiency or strength of the evidence-based guidelines in terms of providing information or direction that would lead to the prevention of contrast-induced acute kidney injury 100 percent of the time. The commenters stated that evidence-based guidelines are based on varying levels of evidence, from expert consensus based on opinion (the “weakest” level) to expert consensus based on data produced in randomized controlled trials (the “strongest” level). According to the commenters, in many cases, the guidelines do not address all patient populations. Commenters also stated that current evidence-based guidelines for decreasing the incidence of contrast-induced acute kidney injury are limited. The commenters also noted that new guidelines addressing the topic of contrast-induced acute kidney injury are being published in late summer of 2011 by an international organization, Kidney Disease Improving Global Outcomes (KDIGO), after a multiyear development process. They noted that CMS should take these guidelines into consideration when they become available.

Response: We acknowledge that different types of evidence-based guidelines exist. However, we believe that the inclusion of contrast-induced acute kidney injury in the current evidence-based guidelines for Acute Kidney Injury supports the inclusion of contrast-induced acute kidney injury as a condition on the HAC list. We agree that any new evidence-based guidelines for contrast-induced acute kidney injury should be considered when they become available.

Comment: A few commenters expressed concern about the proposal potentially creating an incentive for practitioners to avoid necessary contrast use in patients with high risk of acute kidney disease.

Response: We acknowledge and are sensitive to the theoretical possibility of patient access to care being restricted. We are unaware of significant data supporting this assertion, but we will continue to monitor the situation for potential unintended consequences with regard to this concern.

Comment: Some commenters recommended that CMS not reduce payment for this condition, but to instead develop a quality measure that would track it. The commenters noted that such a measure could track whether the appropriate evidence-based steps to prevent contrast-induced acute kidney injury have been performed and documented.

Response: We appreciate the commenters' recommendation. We note that we did not propose to develop a quality measure for contrast-induced acute kidney injury in the proposed rule. Thus, we consider this comment to be outside of the scope of the provisions discussed in the proposed rule. However, this subject area represents an area of continued interest and opportunity for the agency, and we will take this recommendation into consideration during the development of future rulemaking.

In conclusion, after consideration of the public comments we received, we are deferring the decision making on the addition of contrast-induced acute kidney injury as a HAC until future rulemaking, and such a time when improved coding is available for the reasons described above. We note that the reduction of contrast-induced acute kidney injury represents an area of continued interest for the agency, and we believe that substantial opportunity exists for hospitals to improve quality in this area.Start Printed Page 51510

b. Additional New Diagnosis Codes for Existing HACs

As we discussed in the FY 2012 IPPS/LTCH PPS proposed rule (76 FR 25814), as changes to diagnosis codes and new diagnosis codes are proposed and finalized for the list of CCs and MCCs, we modify the list of selected HACs to reflect these changes. We included in Table 6A of the proposed rule (which was made available via the Internet) the five new ICD-9-CM diagnosis codes that we proposed to add to three of the current HAC categories. We proposed to add two new codes for the Falls and Trauma HAC category, two new codes for the Surgical Site Infection (SSI) Following Certain Bariatric Procedures HAC category, and one new code for the Deep Vein Thrombosis and Pulmonary Embolism (DVT/PE) Following Certain Orthopedic Procedures HAC category. The two new diagnosis codes that we proposed to add to the Falls and Trauma HAC category were code 808.44 (Multiple closed pelvic fractures without disruption of pelvic circle) and code 808.54 (Multiple open pelvic fractures without disruption of pelvic circle). These codes fall within the range of the fracture code subcategory (800 through 829). The two new diagnosis codes that we proposed to add to the Surgical Site Infection (SSI) Following Certain Bariatric Procedures HAC category were code 539.01 (Infection due to gastric band procedure) and code 539.81 (Infection due to other bariatric procedure). We stated our belief that these diagnosis codes are appropriate for inclusion in the existing category when reported as a secondary diagnosis with the specified principal diagnosis code of morbid obesity (code 278.01) and one of the designated bariatric procedure codes (code 44.38, 44.39, or 44.95). Lastly, the one new diagnosis code that we proposed to add to the Deep Vein Thrombosis and Pulmonary Embolism (DVT/PE) Following Certain Orthopedic Procedures HAC category was code 415.13 (Saddle embolus of pulmonary artery). Diagnosis code 415.13 would be applicable when reported along with one of the following procedures codes describing certain orthopedic procedures: 00.85 through 00.87, 81.51, 81.52, or 81.54. Shown in the table below are these five new diagnosis codes with their corresponding descriptions and their proposed CC/MCC designations.

ICD-9-CM codeCode descriptorProposed CC/MCC designation
539.01Infection due to gastric band procedureCC
539.81Infection due to other bariatric procedureCC
415.13Saddle embolus of pulmonary arteryMCC
808.44Multiple closed pelvic fractures without disruption of pelvic circleCC
808.54Multiple open pelvic fractures without disruption of pelvic circleMCC

We invited public comments on the proposed adoption of these five new ICD-9-CM diagnosis codes as CC/MCCs that are listed above, which, if finalized, would be added to the current Falls and Trauma HAC category, Surgical Site Infection (SSI) Following Certain Bariatric Procedures HAC category and Deep Vein Thrombosis and Pulmonary Embolism (DVT/PE) Following Certain Orthopedic Procedures HAC category and would be subject to the HAC payment provision for FY 2012.

Comment: Several commenters supported CMS' proposal to adopt the five new ICD-9-CM diagnosis codes with their proposed CC/MCC designations for addition to the current Falls and Trauma HAC category, Surgical Site Infection (SSI) Following Certain Bariatric Procedures HAC category, and Deep Vein Thrombosis and Pulmonary Embolism (DVT/PE) Following Certain Orthopedic Procedures HAC category and to subject them to the HAC payment provision for FY 2012.

Response: We appreciate the commenters' support.

Comment: One commenter expressed concern regarding the appropriateness of adding ICD-9-CM diagnosis code 415.13 as a condition that, when reported along with the designated procedure codes describing certain orthopedic procedures (00.85 through 00.87, 81.51, 81.52, or 81.54) in the Deep Vein Thrombosis and Pulmonary Embolism (DVT/PE) Following Certain Orthopedic Procedures HAC category, be subject to the HAC payment provision. The commenter stated that HAC selection should be based on conditions considered to be reasonably preventable with adherence to evidence-based practice guidelines. The commenter further believed that a saddle embolus of the pulmonary artery, when reported with the cited orthopedic procedure codes, is not a condition that is “reasonably preventable” and that patients undergoing total knee replacement and total hip replacement in the Medicare population are at the highest risk for developing a DVT/PE.

The commenter also stated that the current structure of the MS-DRG system does not specifically risk-adjust for these conditions in the MS-DRGs related to primary total hip replacement (code 81.51) or primary total knee replacement (code 81.54). The commenter believed that risk adjustment is an indispensible component of an equitable HAC policy. The commenter suggested that CMS account for the patient-specific risk factors that affect preventability and reported that many hospitalized patients have comorbidities and other patient characteristics that put them at an increased risk of complications. The commenter suggested that CMS take these factors into account in creating a policy that is reasonable and equitable, in order to minimize incentives for limiting access for patients who are at higher risk for complications.

This same commenter also expressed support of CMS' efforts to encourage the adoption of evidence-based treatment guidelines that could improve the quality of care for patients. However, while the commenter noted that evidence-based guidelines can reduce events, the commenter asserted that CMS selected one of the patient populations at highest risk for DVT/PE, diverging from the concept of “reasonably preventable.”

Response: We appreciate the commenter's detailed comments on the proposal to add diagnosis code 415.13 as a condition that, when reported along with the designated procedure codes described above, is subject to the HAC payment provision. In the FY 2008 IPPS final rule with comment period (72 FR 47200 through 47218), we discussed the evidence based guidelines regarding DVT/PE and agreed with commenters that this is reasonably preventable. In the FY 2009 IPPS final rule (73 FR 48481), we addressed commenters' concerns regarding the preventability of DVT/PE and noted that the statute does not require that a condition be “always preventable”' in order to qualify as an Start Printed Page 51511HAC, but rather that it be “reasonably preventable,” which necessarily implies something less than 100 percent.

With regard to the commenter's assertion that risk adjustment is an indispensible component of an equitable HAC policy, we refer readers to the FY 2009 IPPS final rule and the FY 2010 IPPS/RY 2010 LTCH PPS final rule. In the FY 2009 IPPS final rule (73 FR 48487 through 48488), we discussed risk adjustment of payments related to HACs. We addressed this issue again in the FY 2010 IPPS/RY 2010 LTCH PPS final rule (74 FR 43785), where we noted that a risk adjustment methodology may lead to greater precision of HAC payment determinations. As part of the RTI evaluation of the HAC-POA program, the concept of risk adjustment continues to be an important area of interest and study for the agency. We will consider the results of RTI's evaluation when it is complete and, if appropriate, make a proposal and solicit public comment in future rulemaking.

After consideration of the public comments we received, we are finalizing the adoption of the five new ICD-9-CM diagnosis codes described above as CC/MCCs to be added to their respective HAC categories as proposed. Therefore, effective October 1, 2011 (FY 2012), procedure codes 808.44 and 808.54 describing multiple pelvic fractures will be added to the Falls and Trauma HAC category, procedure codes 539.01 and 539.81 describing infections related to gastric procedures will be added to the Surgical Site Infection (SSI) Following Certain Bariatric Procedures HAC category, and procedure code 415.13 describing a type of pulmonary embolus will be added to the Deep Vein Thrombosis and Pulmonary Embolism (DVT/PE) Following Certain Orthopedic Procedures HAC category. All of these conditions will be subject to the HAC payment provision for FY 2012.

c. Revision to HAC Subcategory Title

After publication of the FY 2011 IPPS/LTCH PPS final rule, we received a comment stating that the subcategory title “Electric Shock” that is included in the Falls and Trauma HAC category was misleading. The commenter stated that this subcategory title did not accurately describe the CC/MCC ICD-9-CM diagnoses codes (991 through 994) contained within this subcategory. The commenter requested that CMS develop a new title that would more accurately describe this group of codes.

In the FY 2012 IPPS/LTCH PPS proposed rule (76 FR 25814), we stated that we agreed with the commenter that the HAC subcategory title “Electric Shock” is potentially misleading because the codes included within these ranges contain a variety of injuries, including the following:

  • Category 991 (Effects of Reduced Temperature)
  • Category 992 (Effects of Heat and Light)
  • Category 993 (Effects of Air Pressure)
  • Category 994 (Effects of Other External Causes)

We proposed to change the title of this HAC subcategory from “Electric Shock” to “Other Injuries” because it includes a variety of injury codes. The subcategory will continue to include the codes within the 991 through 994 code ranges appearing on the CC/MCC list. We did not propose any changes to the list of codes in this subcategory; we simply proposed to rename the subcategory title. We invited public comments on the proposed title change to the HAC subcategory from “Electric Shock” to “Other Injuries” for FY 2012.

Comment: Several commenters supported CMS' proposal to change the title of this HAC subcategory from “Electric Shock” to “Other Injuries” because it includes a variety of injury codes. The commenters stated that this title change would better describe the conditions included in the range of codes.

Response: We appreciate the commenters' support.

After consideration of the public comments we received, we are finalizing our proposal to change the title of the HAC subcategory from “Electric Shock” to “Other Injuries.” The subcategory will continue to include the codes within the 991 through 994 code ranges appearing on the CC/MCC list. In addition, we are not making any changes to the list of codes in this subcategory; the subcategory title will simply be renamed effective FY 2012.

d. Conclusion

In the FY 2012 IPPS/LTCH PPS proposed rule, we listed the current HAC categories and the ICD-9-CM codes that identify the conditions and have been finalized through FY 2011. For FY 2012, we proposed that these conditions continue to be subject to the HAC payment provision, along with the creation of a new HAC category for contrast-induced acute kidney injury. (We note that, as discussed in section II.F.2.a. of the preamble of the proposed rule and this final rule, we are not adopting our proposal to add a new HAC category for contrast-induced acute kidney injury for FY 2012.) In addition, we proposed to add five new ICD-9-CM diagnosis codes and to revise the title of the “Electric Shock” subcategory in the Falls and Trauma HAC category.

Comment: Several commenters supported maintaining the current HAC categories and the ICD-9-CM codes that identify those conditions. These commenters agreed that the conditions should continue to be subject to the HAC payment provision for FY 2012.

Response: We appreciate the commenters' support.

After consideration of the public comments we received, we are adopting the following list of HAC categories and the ICD-9-CM codes that identify the conditions that have been finalized through FY 2011 and that we are finalizing in this final rule for FY 2012.

HACCC/MCC (ICD-9-CM Code)
Foreign Object Retained After Surgery998.4 (CC)
998.7 (CC)
Air Embolism999.1 (MCC)
Blood Incompatibility999.60 (CC)
999.61 (CC)
999.62 (CC)
999.63 (CC)
999.69 (CC)
Pressure Ulcer Stages III & IV707.23 (MCC)
707.24 (MCC)
Falls and Trauma:Codes within these ranges on the CC/MCC list:
—Fracture800-829
—Dislocation830-839
Start Printed Page 51512
—Intracranial Injury850-854
—Crushing Injury925-929
—Burn940-949
—Other Injuries991-994
Catheter-Associated Urinary Tract Infection (UTI)996.64 (CC) Also excludes the following from acting as a CC/MCC:
112.2 (CC)
590.10 (CC)
590.11 (MCC)
590.2 (MCC)
590.3 (CC)
590.80 (CC)
590.81 (CC)
595.0 (CC)
597.0 (CC)
599.0 (CC)
Vascular Catheter-Associated Infection999.31 (CC)
Manifestations of Poor Glycemic Control250.10-250.13 (MCC) 250.20-250.23 (MCC)
251.0 (CC)
249.10-249.11 (MCC)
249.20-249.21 (MCC)
Surgical Site Infections
Surgical Site Infection, Mediastinitis, Following Coronary Artery Bypass Graft (CABG)519.2 (MCC) And one of the following procedure codes:
36.10-36.19
Surgical Site Infection Following Certain Orthopedic Procedures996.67 (CC) 998.59 (CC)
And one of the following procedure codes: 81.01-81.08, 81.23-81.24, 81.31-81.38, 81.83, 81.85
Surgical Site Infection Following Bariatric Surgery for ObesityPrincipal Diagnosis—278.01 539.01 (CC)
539.81 (CC)
998.59 (CC)
And one of the following procedure codes: 44.38, 44.39, or 44.95
Deep Vein Thrombosis and Pulmonary Embolism Following Certain Orthopedic Procedures415.11 (MCC) 415.13 (MCC) 415.19 (MCC)
453.40-453.42 (CC)
And one of the following procedure codes: 00.85-00.87, 81.51-81.52, or 81.54

We refer readers to section II.F.6. of the FY 2008 IPPS final rule with comment period (72 FR 47202 through 47218) and to section II.F.7. of the FY 2009 IPPS final rule (73 FR 48474 through 48486) for detailed analyses supporting the selection of each of the HACs selected through FY 2012.

3. RTI Program Evaluation Summary

a. Background

On September 30, 2009, a contract was awarded to Research Triangle Institute, International (RTI) to evaluate the impact of the Hospital-Acquired Condition-Present on Admission (HAC-POA) provisions on the changes in the incidence of selected conditions, effects on Medicare payments, impacts on coding accuracy, unintended consequences, and infection and event rates. This is an intra-agency project with funding and technical support coming from CMS, OPHS, AHRQ, and CDC. The evaluation will also examine the implementation of the program and evaluate additional conditions for future selection.

RTI's evaluation of the HAC-POA provisions is divided into several parts. In the FY 2011 IPPS/LTCH PPS final rule (50085 through 50101), we summarized the analyses by RTI that had been completed at that time. These RTI analyses of POA indicator reporting, frequencies and net savings associated with current HACs, and frequencies of previously considered candidate HACs reflected MedPAR claims from October 2008 through September 2009.

b. FY 2009 Data Analysis

As we describe in section II.F.1.f. of this preamble, we have provided instructions to IPPS hospitals and non-IPPS hospitals regarding the submission of POA indicator data for all diagnosis codes on Medicare claims and the processing of non-PPS claims (75 FR 23381) and note that specific instructions on how to select the correct POA indicator for each diagnosis code were included in the ICD-9-CM Official Guidelines for Coding and Reporting, available on the CDC Web site at: http://www.cdc.gov/​nchs/​data/​icd9/​icdguide10.pdf. After publication of the FY 2011 IPPS/LTCH PPS final rule, we identified a discrepancy between the claims data that hospitals submitted and the CMS data file used to calculate the HAC measures. Specifically, this error led to incorrect HAC assignments in cases where a hospital reported an external cause of injury (E-code). Since then, we have corrected this error in the data file.

As a result, the RTI analysis of the HAC-POA program that was conducted using FY 2009 claims data was updated using the corrected data file. The corrected data do not appear to have a Start Printed Page 51513material impact on our previous findings for FY 2009. Revised data tables were made publicly available on the CMS Web site at http://www.cms.gov/​HospitalAcqCond/​01_​Overview.asp and the RTI Web site at http://www.rti.org/​reports/​cms/​ after publication of the FY 2012 IPPS/LTCH PPS proposed rule.

c. FY 2010 Data Analysis

RTI's analysis of the FY 2010 MedPAR data file for the HAC-POA program evaluation was prepared for publication in the FY 2012 IPPS/LTCH PPS proposed rule. We indicated in the proposed rule that we would provide the results from the study on the CMS Web site at http://www.cms.gov/​HospitalAcqCond/​01_​Overview.asp and on the RTI Web site at http://www.rti.org/​reports/​cms/​ when it became available. We also stated that we anticipated that the examination of FY 2010 MedPAR data would be completed soon after publication of the proposed rule. We invited public comment on RTI's analysis of the FY 2010 MedPAR data for the HAC-POA program.

Since publication of the FY 2012 IPPS/LTCH proposed rule, we determined that it would be beneficial to the public if we provided a summary of the results of RTI's HAC-POA program evaluation of the FY 2010 MedPAR data in this FY 2012 IPPS/LTCH final rule, in addition to making these results available on both the CMS and RTI Web sites mentioned above. Below we present a summary of these results.

d. FY 2010 RTI Analysis on POA Indicator Reporting of Current HACs.

To better understand the impact of HACs on the Medicare program, it is necessary to first examine the incidence of POA indicator reporting across all eligible Medicare discharges. As mentioned previously, only IPPS hospitals are required to submit POA indicator data for all diagnosis codes on Medicare claims. Therefore, all non-IPPS hospitals were excluded, as well as providers in waiver States (Maryland) and territories other than Puerto Rico.

Using MedPAR claims data from October 2009 through September 2010, RTI found a total of approximately 74.38 million secondary diagnoses across approximately 10.2 million discharges. As shown in Chart A below, the majority of all secondary diagnoses (80.94 percent) were reported with a POA indicator of “Y,” meaning the condition was POA.

Chart A—POA Code Distribution Across All Secondary Diagnoses

NumberPercentage
Total Discharges in Final File10,189,168
Total Number of Secondary Diagnoses Across Total Discharges74,382,681100.00
POA Indicator Description:
Y   Condition present on admission60,206,59380.94
W   Status cannot be clinically determined13,1450.02
N    Condition not present on admission5,001,1386.72
U    Documentation not adequate to determine if condition was present on admission2,223,3182.99
1   Exempted ICD-9-CM code6,938,4879.33
Source: RTI Analysis of MedPAR IPPS Claims, October 2009 through September 2010.

Following the initial analysis of POA indicator reporting for all secondary diagnoses, RTI then evaluated POA indicator reporting for specific HAC-associated secondary diagnoses. The term “HAC-associated secondary diagnosis” refers to those diagnoses that are on the selected HAC list and were reported as a secondary diagnosis. Chart B below shows a summary of the HAC categories with the frequency in which each HAC was reported as a secondary diagnosis and the corresponding POA indicators assigned on the claims. It is important to note that, because more than one HAC-associated diagnosis code can be reported per discharge (that is, on a single claim), the frequency of HAC-associated diagnosis codes may be more than the actual number of discharges that have a HAC-associated diagnosis code reported as a secondary diagnosis. Below we discuss the frequency of each HAC-associated diagnosis code and the POA indicators assigned to those claims.

RTI analyzed the frequency of each reported HAC-associated secondary diagnosis (across all approximately 10.2 million discharges) and the POA indicator assigned to the claim. Chart B below shows that the most frequently reported conditions were in the Falls and Trauma HAC category, with a total of 189,231 HAC-associated diagnosis codes being reported for that HAC category. Of these 189,231 diagnoses, 5,762 reported a POA indicator of “N” and 326 reported a POA indicator of “U” for not POA. Similarly, 183,048 diagnoses reported a POA indicator of “Y” for POA and 95 diagnoses reported a POA indicator of “W.” The lowest frequency appears in the Surgical Site Infection (SSI) Following Bariatric Surgery for Obesity HAC category with only 18 HAC-associated secondary diagnosis codes (and procedure codes) reported, where 17 diagnoses were reported with a POA indicator of “N” and 1 diagnosis was reported with a POA indicator of “Y.”

Chart B—POA Status of Current HACS: October 2009 Through September 2010

Selected HACFrequency as a secondary diagnosisTreated as hospital acquired conditionsNot treated as Hospital acquired conditions
POA = NPOA = UPOA = YPOA = W
NumberPercentNumberPercentNumberPercentNumberPercent
1. Foreign Object Retained After Surgery (CC)56527849.210.228650.600.0
2. Air Embolism (MCC)422969.000.01331.000.0
3. Blood Incompatibility (CC)351234.300.02365.700.0
4. Pressure Ulcer Stages III & IV (MCC)120,5821,4071.2810.1119,06598.7290.0
Start Printed Page 51514
5. Falls and Trauma (MCC & CC)189,2315,7623.03260.2183,04896.7950.1
6. Catheter-Associated UTI (CC)18,2473,87721.2240.114,31978.5270.1
7. Vascular Catheter-Associated Infection (CC)10,0664,34643.2250.25,67356.4220.2
8. Poor Glycemic Control (MCC)16,4685653.4140.115,88896.510.0
9A. Surgical Site Infection Mediastinitis CABG (CC)403690.000.0410.000.0
9B. Surgical Site Infection Following Certain Orthopedic Procedures (CC)36522060.310.314439.500.0
9C. Surgical Site Infection Following Bariatric Surgery for Obesity (CC)181794.400.015.600.0
10. Pulmonary Embolism & DVT Orthopedic (MCC)3,8203,13282.0160.464817.0240.6
Total*359,47919,6815.54880.1339,11294.31980.1

As described in section II.F.1.f. of this preamble, in the FY 2009 IPPS final rule (73 FR 48486 through 48487), we adopted final payment policies to: (1) Pay the CC/MCC MS-DRGs for those HACs coded with “Y” and “W” indicators; and (2) not pay the CC/MCC MS-DRGs for those HACs coded with “N” and “U” indicators. We also discussed the comments we received urging CMS to consider changing the policy and to pay for those HACs assigned a POA indicator of “U” (documentation is insufficient to determine if the condition was present at the time of admission). We stated we would monitor the extent to which and under what circumstances the “U” POA reporting option is used. In the FY 2010 IPPS/RY 2010 LTCH PPS final rule (74 FR 43784 and 43785), we also discussed and responded to comments regarding HACs coded with the “U” indicator. As shown in Chart B above, RTI's analysis provides data on a total of 488 HAC-associated secondary diagnoses reported with a POA indicator of “U.” These 488 diagnoses represented 2.4 percent of the 20,169 diagnoses that were considered not POA (that is, POA indicator of “N” or “U”). Approximately 3 of the 10 conditions reported no diagnoses with POA indicators of “U”: Air embolism, Blood Incompatibility, and two of the three surgical site infections (Mediastinitis after CABG and SSI after bariatric surgery for obesity). For the two most frequently occurring conditions, the Falls and Trauma HAC category and Stage III and/or IV Pressure Ulcers, diagnoses with a POA indicator of “U” represented a small proportion of diagnoses that were considered not POA (that is, POA indicator of “N” or “U”). For the Falls and Trauma HAC category, 5.7 percent of diagnoses (326 cases) considered not POA were reported with a POA indicator of “U.” For Stage III and/or IV Pressure Ulcers, 5.4 percent of diagnoses (81 cases) considered not POA were reported with a POA indicator of “U.” These two categories also represented the conditions where diagnoses with a POA indicator of “U” were the highest proportion of diagnoses considered not POA. We consider the range of 0 to 5.7 percent to indicate that “U” is not used with great frequency for these 10 conditions. In the proposed rule, we stated that we did not contemplate a proposal to change our policy under which CMS does not pay at the higher CC/MCC amount when a selected HAC diagnosis code is reported with a POA indicator of “U.” The data analysis described above continues to support our policy.

We encourage readers to further review the RTI detailed report which demonstrates the frequency of each individual HAC-associated diagnosis code within the HAC categories. As an example, we note that in the Foreign Object Retained After Surgery HAC category, there are two unique ICD-9-CM diagnosis codes used to identify that condition: diagnosis code 998.4 (Foreign body accidentally left during a procedure) and diagnosis code 998.7 (Acute reaction to foreign substance accidentally left during a procedure). In the detailed RTI report, readers can view that diagnosis code 998.4 was reported 547 times and diagnosis code 998.7 was reported 18 times, across all MS-DRGs, for a total of 565 times. The RTI detailed report is available at the following Web site: http://www.rti.org/​reports/​cms/​.

e. FY 2010 RTI Analysis of Frequency of Discharges and POA Indicator Reporting for Current HACs

RTI further analyzed the effect of the HAC provision by studying the frequency with which a HAC-associated diagnosis was reported as a secondary diagnosis with a POA indicator of “N” or “U” and, of that number, how many resulted in MS-DRG reassignment. In Chart C below, Column A shows the number of discharges for each HAC category where the HAC-associated diagnosis was reported as a secondary diagnosis. Column B shows the percent of discharges reporting a HAC-associated diagnosis code relative to the total discharges “at risk” in each HAC category. For HAC categories 1 through 8, both medical and surgical MS-DRGs are included in the total discharges “at risk” so this equates to 10,189,168 discharges. The remaining HAC categories are defined by the combination of diagnosis and procedure codes; therefore, only the surgical MS-DRGs that include the designated procedure codes are included in the total discharges “at risk.” For HAC 9a, the total discharges “at risk” equates to 97,341. For HAC 9b, the total discharges “at risk” equates to 118,815 and for HAC 9c, the total discharges “at risk” equates to 15,698. Lastly, for HAC 10, the total discharges “at risk” equates to 440,571.

Column C shows the number of discharges for each HAC reported with a POA indicator of “N” or “U.” For example, there were 42 discharges that reported Air Embolism as a secondary diagnosis. The chart shows that, of these 42 reported discharges, 29 discharges (69.05 percent) had a POA indicator of “N” or “U” and was identified as a HAC discharge. The HAC policy applied to these 29 discharges, and they could, therefore, have had an MS-DRG reassignment. Column E shows the number of discharges where an actual MS-DRG reassignment occurred. For the Air Embolism HAC, Column E shows that the number of discharges that resulted in actual MS-DRG reassignments is 15 (51.72 percent of the 29 discharges with a POA indicator of “N” or “U”). Thus, while there were 29 discharges (69.05 percent of the original Start Printed Page 5151542 that had air embolism reported as a secondary diagnosis) with an air embolism reported with a POA indicator of “N” or “U” identified as a HAC discharge that could have caused MS-DRG reassignment, 15 discharges (51.72 percent) experienced MS-DRG reassignments. There are a number of reasons why a selected HAC reported with a POA indicator of “N” or “U” will not result in MS-DRG reassignment. These reasons were illustrated with the diagram in section II.F.1.c. of this preamble and will be discussed in further detail in section II.F.3.e. of this preamble.

Chart C below also shows that, of the 317,644 discharges with a HAC-associated diagnosis as a secondary diagnosis, 3,587 discharges ultimately resulted in MS-DRG reassignment. As we discuss below, there were 15 claims that resulted in MS-DRG reassignment where 2 HACs were reported on the same admission. The four HAC categories that had the most discharges resulting in MS-DRG reassignment were: (1) Falls and Trauma; (2) Pulmonary Embolism and DVT Orthopedic (Orthopedic PE/DVT); (3) Pressure Ulcer Stages III & IV; and (4) Catheter-Associated Urinary Tract Infection (UTI).

Codes falling under the Falls and Trauma HAC category were the most frequently reported secondary diagnoses with 154,371 discharges. Of these 154,371 discharges, 5,454 (3.53 percent) were coded as not POA and identified as HAC discharges. This category also contained the greatest number of discharges that resulted in an MS-DRG reassignment. Of the 5,454 discharges within this HAC category that were not POA, 1,672 (30.66 percent) resulted in an MS-DRG reassignment.

Of the 317,644 total discharges reporting HAC-associated diagnoses as a secondary diagnosis, 3,494 discharges were coded with a secondary diagnosis of PE/DVT Orthopedic. Of these 3,494 discharges, 2,876 (82.31 percent) were coded as not POA and identified as HAC discharges. This category contained the second greatest number of discharges resulting in an MS-DRG reassignment. Of the 2,876 discharges in this HAC category that were not POA, 1,206 discharges (41.93 percent) resulted in an MS-DRG reassignment.

The Pressure Ulcer Stages III & IV category had the second most frequently coded secondary diagnoses, with 114,138 discharges. Of these discharges, 1,444 (1.27 percent) were coded as not POA and identified as HAC discharges. This category contained the third greatest number of discharges resulting in an MS-DRG reassignment. Of the 1,444 discharges in this HAC category that were not POA, 292 discharges (20.22 percent) resulted in an MS-DRG reassignment.

The Catheter-Associated UTI category had the third most frequently coded secondary diagnoses, with 18,247 discharges. Of these discharges, 3,885 (21.29 percent) were coded as not POA and identified as HAC discharges. This category contained the fourth greatest number of discharges resulting in an MS-DRG reassignment. Of the 3,885 discharges in this HAC category that were not POA, 223 discharges (5.74 percent) resulted in a MS-DRG reassignment.

The remaining 6 HAC categories only had 194 discharges that ultimately resulted in MS-DRG reassignment. We note that, even in cases where a large number of HAC-associated secondary diagnoses were coded as not POA, this finding did not necessarily translate into a large number of discharges that resulted in MS-DRG reassignment. For example, only 22 of the 4,366 Vascular Catheter-Associated Infection secondary diagnoses that were coded as not POA and identified as HAC discharges resulted in a MS-DRG reassignment.

There were a total of 364 discharges with a HAC-associated secondary diagnosis reporting a POA indicator of “N” or “U” that were excluded from acting as a HAC discharge (subject to MS-DRG reassignment) due to the CC Exclusion List logic within the GROUPER. The CC Exclusion List identifies secondary diagnosis codes designated as a CC or MCC that are disregarded by the GROUPER logic when reported with certain principal diagnoses. For example, a claim with the principal diagnosis code of 250.83 (Diabetes with other specified manifestations, type 1 [juvenile type], uncontrolled) and a secondary diagnosis code of 250.13 (Diabetes with ketoacidosis, type 1, [juvenile type], uncontrolled) with a POA indicator of “N” would result in the HAC-associated secondary diagnosis code 250.13 being ignored as a CC. According to the CC Exclusion List, code 250.13 is excluded from acting as a CC when code 250.83 is the principal diagnosis. As a result, the HAC logic would not be applicable to that case. For a detailed discussion on the CC Exclusion List, we refer readers to section II.G.9. of this preamble.

Discharges where the HAC logic was not applicable due to the CC Exclusion List occurred among the following 6 HAC categories: Pressure Ulcer Stages III and IV (29 cases); Falls and Trauma (263 cases); Catheter-Associated UTI (16 cases); Vascular Catheter-Associated Infection (5 cases); Manifestations of Poor Glycemic Control (50 cases); and Surgical Site Infection Following Certain Orthopedic Procedures (1 case). Further information regarding the specific number of cases that were excluded for each HAC-associated secondary diagnosis code within each of the above mentioned HAC categories is also available in the RTI detailed report, which can be found at: http://www.rti.org/​reports/​cms/​.

In summary, Chart C below demonstrates that there were a total of 317,644 discharges with a reported HAC-associated secondary diagnosis. Of the total 317,644 discharges, 6.0 percent, or 19,143 discharges, were HACs reported with a POA indicator of “N” or “U” that were identified as a HAC discharge. Approximately 18.7 percent, or 3,587 discharges, of these 19,143 discharges resulted in MS-DRG reassignments.

Chart C—Discharge Frequencies of Current CMS HACS October 2009 Through September 2010

Selected HAC categoryDischarges with this condition as secondary diagnosisDischarges identified as a HACDischarges that change MS-DRG due to HAC
Number (column a)Percent 2 (column b)Number (column c)Percent 3 (column d)Number (column e)Percent 4 (column f)
1. Foreign Object Retained After Surgery5630.0127849.384415.83
2. Air Embolism420.002969.051551.72
3. Blood Incompatibility350.001234.2900.00
4. Pressure Ulcer Stages III & IV114,1381.121,4441.2729220.22
5. Falls and Trauma
a. Fracture137,8881.354,7003.411,43930.62
Start Printed Page 51516
b. Dislocation1,1050.01353.17411.43
c. Intracranial Injury15,8440.167064.4623433.14
d. Crushing Injury410.0024.88150.00
e. Burn2,2970.02391.70615.38
f. Electric Shock8180.0191.1000.00
Less: Discharges with multiple Falls & Trauma−3,622−0.04−37−1.02−12−32.43
5. Falls and Trauma: Unduplicated Total154,3711.525,4543.531,67230.66
6. Catheter-Associated UTI18,2470.183,88521.292235.74
7. Vascular Catheter-Associated Infection10,0660.104,36643.37220.50
8. Poor Glycemic Control16,2670.165263.2310720.34
9a. SSI Mediastinitis CABG400.043690.00411.11
9b. SSI Orthopedic3630.3122060.6120.91
9c. SSI Bariatric180.111794.4400.00
10. Pulmonary Embolism & DVT Orthopedic3,4940.792,87682.311,20641.93
Total 1317,64419,1433,587
1 Discharges can appear in more than one row. The total figure is not adjusted for the 94 discharges with more than one HAC that appear as secondary diagnoses (15 of these resulted in MS-DRG reassignment).
2 Percent computed relative to total discharges “at risk” for this HAC. For HACs 1-8, this is 10,189,168. For HAC 9a, this is 97,341. For HAC 9b, this is 118,815. For HAC 9c, this is 15,698. For HAC 10, this is 440,571.
3 Percent computed relative to discharges with condition as a secondary diagnosis.
4 Percent computed relative to discharges with this HAC (Column C).
Source: RTI Analysis of MedPAR IPPS Claims, October 2009 through September 2010.

An extremely small number of discharges had multiple HACs reported during the same stay. In reviewing the approximately 10.2 million claims, RTI found approximately 94 cases in which 2 HACs were reported on the same discharge. Chart D below summarizes these cases. Thirty-two of the cases with 2 HACs involved Pressure Ulcer Stages III & IV, and 31 cases involved Falls or Trauma. Other multiple HAC cases included 27 Catheter-Associated UTI cases, 3 Vascular Catheter-Associated Infection cases and 1 Foreign Object Retained After Surgery case. There were eight cases in which a Falls and Trauma HAC was reported together with a Pressure Ulcer Stages III & IV HAC.

Some of these cases with multiple HACs reported had both HAC codes ignored in the MS-DRG assignment. Of these 66 claims, 49 did not receive higher payments based on the presence of these reported HACs, and we describe these claims in section II.F.3.f.(2) of this preamble. Depending on the MS-DRG to which the cases were originally assigned, ignoring the HAC codes would have led to a MS-DRG reassignment if there were no other MCCs or CCs reported, if the MS-DRG was subdivided into severity levels, and if the case were not already in the lowest severity level prior to ignoring the HAC codes.

Chart D—Claims With More Than One HAC Secondary Diagnosis October 2009 Through September 2010

HAC1. Foreign object—CC4. Pressure ulcer stages III & IV—MCC5. Falls and trauma—MCC & CC6. Catheter- associated UTI—CC7. Vascular catheter- associated infection—CC
5. Falls and trauma—MCC & CC8
6. Catheter-Associated UTI—CC812
7. Vascular Catheter-Associated Infection—CC12621
8. Poor Glycemic Control—MCC121
9B. Surgical Site Infection Following Certain Orthopedic Procedures—CC12
10. Pulmonary Embolism & DVT Orthopedic—MCC3116
Total13231273

f. RTI Analysis of Circumstances When Application of HAC Provisions Would Not Result in MS-DRG Reassignment for Current HACs

As discussed in section II.F.1. and illustrated in the diagram in section II.F.1.c. of this preamble, there are instances when the MS-DRG assignment does not change even when there is a HAC as a secondary diagnosis (meaning a HAC-associated secondary diagnosis has a POA indicator of either “N” or “U.”) In analyzing our claims data, RTI identified four main reasons why a MS-DRG assignment would not change despite the presence of a HAC. Those four reasons are described below and are shown in Chart E below. Column A shows the frequency of discharges that included a HAC-associated secondary diagnosis. Column Start Printed Page 51517B shows the frequency of discharges where the HAC-associated secondary diagnosis was coded as not POA and, therefore, identified as a HAC discharge. Column C shows the frequency of discharges in which the HAC-associated secondary diagnosis coded as not POA resulted in a change in MS-DRG. Columns D, E, F, and G show the frequency of discharges in which the HAC-associated secondary diagnosis coded as not POA did not result in a change in MS-DRG assignment. Columns D, E, F, and G are explained in more detail below.

(1) Other MCCs/CCs Prevent Reassignment

Column D (Other MCC/CCs that Prevent Reassignment) in Chart E below indicates the number of cases reporting a HAC (cases with HAC-associated diagnosis codes with a POA of “N” or “U”) that did not have a MS-DRG reassignment because of the presence of other secondary diagnoses on the MCC or CC list. A claim that is coded with a HAC-associated secondary diagnoses and a POA status of either “N” or “U” may have other secondary diagnoses that are classified as an MCC or a CC. In such cases, the presence of these other MCC and CC diagnoses will still lead to the assignment of a higher severity level, despite the fact that the GROUPER software is disregarding the ICD-9-CM code that identifies the selected HAC in making the MS-DRG assignment for that claim. For example, there were 156 cases in which the ICD-9-CM codes for the Foreign Object Retained After Surgery HAC category were present, but the presence of other secondary diagnoses that were MCCs or CCs resulted in no change to the MS-DRG assignment. Chart E shows that a total of 11,818 cases with HACs did not have a change in the MS-DRG assignment because of the presence of other reported MCCs and CCs. This represents approximately 76 percent of the 15,556 cases with HACs that did not have a change in MS-DRG assignment.

(2) Two Severity Levels Where HAC Does Not Impact MS-DRG Assignment

Column E (Number of MS-DRGs with Two Severity Levels Where HAC Does Not Impact MS-DRG Assignment) shows the frequency with which discharges with a HAC (cases with HAC-associated diagnosis codes with a POA of “N” or “U”) did not result in an MS-DRG change because the MS-DRG is subdivided solely by the presence or absence of an MCC. A claim with a HAC and a POA indicator of either “N” or “U” may be assigned to an MS-DRG that is subdivided solely by the presence or absence of an MCC. In such cases, removing a HAC ICD-9-CM CC code will not lead to further changes in the MS-DRG assignment. Examples of these MS-DRG subdivisions are shown in the footnotes to the chart and include the following examples:

  • MS-DRGs 100 and 101 (Seizures with or without MCC, respectively)
  • MS-DRGs 102 and 103 (Headaches with or without MCC, respectively)

The codes that fall under the HAC category of Foreign Object Retained After Surgery are CCs. If this case were assigned to a MS-DRG with an MCC subdivision such as MS-DRGs 100 and 101, the presence of the HAC code would not affect the MS-DRG severity level assignment. In other words, if the Foreign Object Retained After Surgery code were the only secondary diagnosis reported, then the case would be assigned to MS-DRG 101 (Seizure without MCC). If the POA indicator was “N,” the HAC Foreign Object Retained After Surgery code would be ignored in the MS-DRG assignment logic. Despite the fact that the code was ignored, the case would still be assigned to the same, lower severity level MS-DRG. Therefore, there would be no impact on the MS-DRG assignment.

Column E in Chart E below shows that there were 2,282 cases where the HAC code was reported with an “N” or “U” and the MS-DRG assignment did not change because the case was already assigned to the lowest severity level. This represents approximately 15 percent of the 15,556 cases with HACs that did not have a change in MS-DRG assignment.

(3) No Severity Levels

Column F (Number of MS-DRGs with No Severity Levels) shows the frequency with which discharges with an HAC (cases with HAC-associated diagnosis codes with a POA of “N” or “U”) did not result in an MS-DRG change because the MS-DRG that the case was assigned to is not subdivided by severity levels. For instance, MS-DRG 311 (Angina Pectoris) has no severity level subdivisions; this MS-DRG is not split based on the presence of an MCC or a CC. If a patient assigned to this MS-DRG develops a secondary diagnosis such as a Stage III pressure ulcer after admission, the condition would be considered a HAC. The code for the Stage III pressure ulcer would be ignored in the MS-DRG assignment because the condition developed after the admission (the POA indicator was “N”). Despite the fact that the ICD-9-CM code for the HAC Stage III pressure ulcer was ignored, the MS-DRG assignment would not change. The case would still be assigned to MS-DRG 311. Chart E below shows that 1,449 cases reporting a HAC (cases with HAC-associated diagnosis codes with a POA of “N” or “U”) did not undergo a change in the MS-DRG assignment based on the fact that the case was assigned to a MS-DRG that had no severity subdivisions (that is, the MS-DRG is not subdivided based on the presence or absence of an MCC or a CC, rendering the presence of the HAC irrelevant for payment purposes). This represents approximately 9 percent of the 15,556 cases with HACs that did not have a change in MS-DRG assignment.

(4) MS-DRG Logic

Column G (MS-DRG Logic Issues) shows the frequency with which a HAC (cases with HAC-associated diagnosis codes with a POA of “N” or “U”) did not result in an MS-DRG change because of MS-DRG assignment logic. There were seven discharges where the HAC criteria were met and the HAC logic was applied. However, due to the structure of the MS-DRG logic, these cases did not result in MS-DRG reassignment. These cases may appear similar to those discharges where the MS-DRG is subdivided into two severity levels by the presence or absence of an MCC and did not result in MS-DRG reassignment. However, these discharges differ slightly in that the MS-DRG logic also considers specific procedures that were reported on the claim. In other words, for certain MS-DRGs, a procedure may be considered the equivalent of an MCC or a CC. The presence of the procedure code dictates the MS-DRG assignment despite the presence of the HAC-associated secondary diagnosis code with a POA indicator of “N” or “U.”

For example, a claim with the principal diagnosis code of 441.1 (Thoracic aneurysm, ruptured) with HAC-associated secondary diagnosis code of 996.64 (Infection and inflammatory reaction due to indwelling urinary catheter) and non-HAC secondary diagnosis code 599.0 (Urinary tract infection, site not specified), having POA indicators of “Y,” “N,” and “N,” respectively, and procedure code 39.73 (Endovascular implantation of graft in thoracic aorta) currently results in an assignment to MS-DRG 237 (Major Cardiovascular Procedures with MCC or Thoracic Aortic Aneurysm Repair). In this case, the thoracic aortic aneurysm repair is what dictated the MS-DRG assignment, and the presence of the HAC-associated secondary diagnosis code, 996.64, did not affect the MS-DRG assignment. Other examples of MS-Start Printed Page 51518DRGs that are subdivided in this same manner are as follows:

  • MS-DRG 029 (Spinal procedures with CC or Spinal Neurostimulators)
  • MS-DRG 129 (Major Head & Neck Procedures with CC/MCC or Major Device)
  • MS-DRG 246 (Percutaneous Cardiovascular Procedure with Drug-Eluting Stent with MCC or 4+ Vessels/Stents)

Column G in the chart below shows that three of the seven cases that did not result in MS-DRG reassignment due to the MS-DRG logic were in the Falls and Trauma HAC category, two cases were in the Catheter Associated UTI HAC category and two cases were in the Vascular Catheter-Associated Infection HAC Category.

In conclusion, a total of 15,556 cases (11,818 + 2,282 +1,449 + 7) did not have a change in MS-DRG assignment, regardless of the presence of a HAC. The reasons described above explain why only 3,587 cases had a change in MS-DRG assignment despite the fact that there were 19,143 HACs (cases with HAC-associated diagnosis codes with a POA of “N” or “U”).

Chart E—Reasons HAC Did Not Change MS-DRG Assignment October 2009 Through September 2010

Selected HAC categoryNumber of discharges with this condition as secondary diagnosis (Column A)Number of discharges identified as a HAC (Column B)Number of HAC discharges that change MS-DRG due to HAC (Column C)HAC discharges that do not change MS-DRG
Number of other MCCs/CCs that prevent reassignment (Column D)Number of MS-DRGs with two severity levels where HAC does not affect MS-DRG assignment * (Column E)Number of MS-DRGs with no severity levels (Column F)Other MS-DRG logic issues ** (Column G)
1. Foreign Object Retained After Surgery—CC5632784415667110
2. Air Embolism—MCC42291514000
3. Blood Incompatibility—CC351209030
4. Pressure Ulcer Stages III & IV—MCC114,1381,44429289502570
5. Falls and Trauma—MCC & CC154,3715,4541,6722,8585703513
6. Catheter-Associated UTI—CC18,2473,8852232,9304902402
7. Vascular Catheter-Associated Infection—CC10,0664,366223,6561894972
8. Poor Glycemic Control—MCC & CC16,2675261073643520
9A. Surgical Site Infection, Mediastinitis, Following Coronary Artery Bypass Graft (CABG)—MCC4036424080
9B. Surgical Site Infection Following Certain Orthopedic Procedures—CC36322021367930
9C. Surgical Site Infection Following Bariatric Surgery for Obesity—CC1817017000
10. Pulmonary Embolism & DVT Orthopedic—MCC & CC3,4942,8761,206759884270
Total 1317,64419,1433,58711,8182,2821,4497
1 Discharges can appear in more than one row. The total figure is not adjusted for the approximately 94 discharges with more than one HAC that appear as secondary diagnoses (15 of these discharges resulted in MS-DRG reassignment).
* Examples where an HAC classified as a CC would not affect the DRG assignment if it were removed. The MS-DRG is subdivided by the presence or absence of an MCC. A CC would not impact this DRG assignment.
■MS-DRGs 100 and 101 (Seizures with or without MCC, respectively).
■MS-DRGs 102 and 103 (Headaches with or without MCC, respectively).
** Examples where HAC did not change MS-DRG assignment because of the MS-DRG logic.
■MS-DRG 029 (Spinal Procedures with CC or Spinal Neurostimulators).
■MS-DRG 120 (Major Head & Neck Procedures with CC/MCC or Major Device).
Source: RTI Analysis of MedPAR IPPS Claims, October 2009 through September 2010.
Start Printed Page 51519

g. RTI Analysis of Coding Changes for HAC-Associated Secondary Diagnoses for Current HACs

In addition to studying claims from October 2009 through September 2010, RTI evaluated claims data from 3 years prior to determine if there were significant changes in the number of discharges with a HAC-associated code being reported as a secondary diagnosis. To provide consistency with the FY 2010 data studied, RTI examined claims using discharge dates from October 2006 through September 2007 (for FY 2007), October 2007 through September 2008 (for FY 2008), October 2008 through September 2009 (FY 2009) and compared these data to the FY 2010 data.

We refer readers to the RTI detailed report for further information regarding all the conditions in each fiscal year (FY 2007 through FY 2010) as described above at the Web site: http://www.rti.org/​reports/​cms/​.

h. RTI Analysis of Estimated Net Savings for Current HACs

RTI determined estimates of the net savings generated by the HAC payment policy based on MedPAR claims for FY 2010, from October 2009 through September 2010.

(1) Net Savings Estimation Methodology

The payment impact of a HAC is the difference between the IPPS payment amount under the initially assigned MS-DRG and the amount under the reassigned MS-DRG. The amount for the reassigned MS-DRG appears on the MedPAR files. To calculate this payment impact, RTI modeled the IPPS payments for each MS-DRG following the same approach that we use to model the impact of IPPS annual rule changes. Specifically, RTI replicated the payment computations carried out in the IPPS PRICER program using payment factors for IPPS providers as identified in various CMS downloaded files. The files used are as follows:

  • Version 27 of the Medicare Severity GROUPER software (applicable to discharges between October 1, 2009 and September 30, 2010). IPPS MedPAR claims were run through this file to obtain needed HAC-POA output variables.
  • The FY 2010 MS-DRG payment weight file. This file includes the weights, geometric mean length of stay (GLOS), and the postacute transfer payment indicators.
  • CMS standardized operating and capital rates. Tables 1A through 1C, as downloaded from the Web site at: http://www.cms.hhs.gov/​AcuteInpatientPPS/​IPPS2010, include the full update and reduced update amounts, as well as the information needed to compute the blended amount for providers located in Puerto Rico.
  • The IPPS impact file for FY 2010, as downloaded from the Web site at: http://www.cms.hhs.gov/​AcuteInpatientPPS/​IPPS2010/​. This file includes the wage index and geographic adjustment factors plus the provider type variable to identify providers qualifying for alternative hospital-specific amounts and their respective hospital-specific payment rates.
  • The IPPS impact file for FY 2011, as downloaded from the Web site at: http://www.cms.hhs.gov/​AcuteInpatientPPS/​11FR/​. This file includes indirect medical education (IME) and disproportionate share (DSH) percent adjustments as well as the operating and capital CCRs that were in effect as of March 2010.
  • CMS historical provider-specific files (PSFs). These files include the indicator to identify providers subject to the full or reduced standardized rates and the applicable operating and capital CCRs. A SAS version was downloaded from the Web site at: http://www.cms.hhs.gov/​ProspMedicareFeeSvcPmtGen/​04_​psf_​SAS.asp. There were 50 providers with discharges in the final HAC analysis file that did not appear in the FY 2010 impact file, of which 11 also did not appear in the FY 2011 impact file. For these providers, we identified the geographic CBSA from the historical PSF and assigned the wage index using values from Tables 4A and 4C as downloaded from the Web site at: http://www.cms.hhs.gov/​AcuteInpatientPPS/​IPPS2010/​. For providers in the FY 2011 file but not the FY 2010 file, we used IME and DSH rates from FY 2011. The 11 providers in neither impact file were identified as non-IME and non-DSH providers in the historical PSF file.

The steps for estimating the HAC payment impact are as follows:

Step 1: Re-run the Medicare Severity GROUPER on all records in the analysis file. This is needed to obtain information on actual HAC-related MS-DRG reassignments in the file, and to identify the CCs and MCCs that contribute to each MS-DRG assignment.

Step 2: Model the base payment and outlier amounts associated with the initial MS-DRG if the HAC were excluded using the computations laid out in the CMS file “Outlier Example FY 2007 new.xls,” as downloaded from the Web site at: http://www.cms.hhs.gov/​AcuteInpatientPPS/​04_​outlier.asp#TopOfPage, and modified to accommodate FY 2010 factors. RTI's first round of computations treated all claims as though paid under standard IPPS rules without adjusting for short-stay transfers or hospital-specific payment amounts.

Step 3: Model the base payment and outlier amounts associated with the final MS-DRG where the HAC was excluded using the computations laid out in the CMS file “Outlier Example FY 2007 new.xls,” as downloaded from the Web site at: http://www.cms.hhs.gov/​AcuteInpatientPPS/​04_​outlier.asp#TopOfPage and modified to accommodate FY 2010 factors. RTI's first round of computations treated all claims as though paid under standard IPPS rules without adjusting for short-stay transfers or hospital-specific payment amounts.

Step 4: Compute MS-DRG base savings as the difference between the nonoutlier payments for the initial and final MS-DRGs. Compute outlier amounts as the difference in outlier amounts due under the initial and final reassigned MS-DRG. Compute net savings due to HAC reassignment as the sum of base savings plus outlier amounts.

Step 5: Adjust the model to incorporate short-stay transfer payment adjustments.

Step 6: Adjust the model to incorporate hospital-specific payments for qualifying rural providers receiving the hospital-specific payment rates.

It is important to mention that using the methods described above, the MS-DRG and outlier payments amounts that are modeled for the final assigned MS-DRG do not always match the MS-DRG price and outlier amounts that appear in the MedPAR record. There are several reasons for this. Some discrepancies are caused by using single wage index, IME, and DSH factors for the full period covered by the discharges, when, in practice, these payment factors can be adjusted for individual providers during the course of the fiscal year. In addition, RTI's approach disregards any Part A coinsurance amounts owed by individual beneficiaries with greater than 60 covered days in a spell of illness. Five percent of all HAC discharges showed at least some Part A coinsurance amount due from the beneficiary, although less than 2 percent of reassigned discharges (55 cases in the analysis file) showed Part A coinsurance amounts due. Any Part A coinsurance payments would reduce the actual savings incurred by the Medicare program.

There are also a number of less common special IPPS payment situations that are not factored into Start Printed Page 51520RTI's modeling. These could include new technology add-on payments, payments for blood clotting factors, reductions for replacement medical devices, adjustments to the capital rate for new providers, and adjustments to the capital rate for certain classes of providers who are subject to a minimum payment level relative to capital cost.

(2) Net Savings Estimate

Chart F below summarizes the estimated net savings of current HACs based on MedPAR claims from October 2009 through 2010, based on the methodology described above. Column A shows the number of discharges where a MS-DRG reassignment for each HAC category occurred. For example, there were 15 discharges with an air embolism that resulted in an actual MS-DRG reassignment. Column B shows the total net savings caused by MS-DRG reassignments for each HAC category. Continuing with the example of air embolism, the chart shows that the 15 discharges with an MS-DRG reassignment resulted in a total net savings of $118,785. Column C shows the net savings per discharge for each HAC category. For the Air Embolism HAC category, the net savings per discharge is $7,919. Because a single discharge can have more than one HAC, discharges can appear in more than one row. The total net savings shown in the last line of Column B is adjusted to avoid duplicate counting and is therefore less than the sum of the net savings from the lines above.

Chart F—Estimated Net Savings of Current HACs October 2009 Through September 2010

Selected HACNumber of discharges that change MS-DRG due to HACNet savings (in dollars)Net savings per discharge (in dollars)
(Column A)(Column B)(Column C)
1. Foreign Object Retained After Surgery44$159,841$3,633
2. Air Embolism15118,7857,919
3. Blood Incompatibility000
4. Pressure Ulcer Stages III & IV2921,795,4566,149
5. Falls and Trauma:
a. Fracture1,4398,119,3085,642
b. Dislocation413,2443,311
c. Intracranial Injury2341,127,0664,817
d. Crushing Injury17,8267,826
e. Burn615,5942,599
f. Shock000
Less: Discharges with Multiple Falls & Trauma 1−12−82,330−6,861
5. Falls and Trauma: Unduplicated Total1,6729,200,7085,503
6. Catheter-Associated UTI223696,6623,124
7. Vascular Catheter-Associated Infection2277,6903,531
8. Poor Glycemic Control107604,3085,648
9a. SSI Mediastinitis CABG432,3928,098
9b. SSI Orthopedic215,0447,522
9c. SSI Bariatric000
10. Pulmonary Embolism & DVT Orthopedic1,2068,826,9127,319
Total3,58721,527,7986,002
Less: Discharges with Multiple HACs 2−15−77,703−5,180
Unduplicated Total3,57221,450,0956,005
1 Discharges can have more than one Falls and Trauma HAC and therefore appear in more than one row.
2 Discharges can have more than one HAC and therefore appear in more than one row.
Source: RTI Analysis of MedPAR IPPS Claims, October 2009 through September 2010.

As shown in Chart F above, the unduplicated total net savings calculated for the 12-month period from October 2009 through September 2010 was approximately $21.5 million. The three HACs with the largest number of discharges resulting in MS-DRG reassignment, Falls and Trauma, Orthopedic PE/DVT, and Pressure Ulcer Stages III & IV, generated approximately $19.83 million of net savings for the 12-month period. Estimated net savings for the 12-month period associated with the Falls and Trauma category were approximately $9.20 million. Estimated net savings associated with Orthopedic PE/DVT for the 12-month period were approximately $8.83 million. Estimated net savings for the 12-month period associated with Pressure Ulcer Stages III & IV were approximately $1.80 million.

The mean net savings per discharge calculated for the 12-month period from October 2009 through September 2010 was approximately $6,005. The HAC categories of Air Embolism; SSI, Mediastinitis, Following Coronary Artery Bypass Graft (CABG); and SSI Following Certain Orthopedic Procedures had the highest net savings per discharge, but represented a small proportion of total net savings because the number of discharges that resulted in MS-DRG reassignment for these HACs was low. With the exception of Blood Incompatibility and SSI Following Bariatric Surgery for Obesity, where no savings occurred because no discharges resulted in MS-DRG reassignment, Catheter-Associated UTI had the lowest net savings per discharge.

We refer readers to the RTI detailed report available at the Web site: http://www.rti.org/​reports/​cms/​.

As mentioned previously, an extremely small number of cases in the 12-month period of FY 2010 analyzed by RTI had multiple HACs during the same stay. In reviewing approximately 10.2 million claims, RTI found Start Printed Page 51521approximately 94 cases where 2 HACs were reported on the same admission as noted in section II.F.3.g.(2) of this preamble. Of these approximately 94 claims, 15 resulted in MS-DRG reassignment. Chart G below summarizes these cases. There were 15 cases that had 2 HACs not POA that resulted in an MS-DRG reassignment. Of these, four discharges involved Pressure Ulcer Stages III & IV, four discharges involved Falls and Trauma, and seven discharges involved Vascular Catheter-Associated Infection.

Chart G—Claims With More Than One HAC Secondary Diagnosis Where MS-DRG Reassignment Occurred October 2009 Through September 2010

Selected HAC4. Pressure Ulcer Stages III & IV-MCC5. Falls and Trauma—MCC & CC7. Vascular Catheter-Associated Infection—CC
5. Falls and Trauma—MCC & CC2
6. Catheter-Associated Urinary Tract Infection (UTI)—CC126
7. Vascular Catheter-Associated Infection—CC12
9B. Surgical Site Infection Following Certain Orthopedic Procedures—CC1
Total447

As we discuss in section II.F.1.b. of this preamble, implementation of this policy is the part of an array of Medicare VBP tools that we are using to promote increased quality and efficiency of care. We point out that a decrease over time in the number of discharges where these conditions are not POA is a desired consequence. We recognize that estimated net savings would likely decline as the number of such discharges decline. However, we believe that the sentinel effect resulting from CMS identifying these conditions is critical. (We refer readers to section IV.A. of this preamble for a discussion of the inclusion of the incidence of these conditions in the Hospital IQR Program.) It is our intention to continue to monitor trends associated with the frequency of these HACs and the estimated net payment impact through RTI's program evaluation and possibly beyond.

i. Previously Considered Candidate HACs—RTI Analysis of Frequency of Discharges and POA Indicator Reporting

RTI evaluated the frequency of conditions previously considered, but not adopted as HACs in prior rulemaking, that were reported as secondary diagnoses (across all approximately 10.2 million discharges), as well as the POA indicator assignments for these conditions. Chart H below indicates that the four previously considered candidate conditions most frequently reported as a secondary diagnosis were: (1) Clostridium Difficile-Associated Disease (CDAD), which demonstrated the highest frequency, with a total of 90,243 secondary diagnoses codes being reported for that condition, of which 29,306 reported a POA indicator of “N”; (2) Methicillin-Resistant Staphylococcus aureus, with a total of 72,313 secondary diagnoses codes being reported for that condition, with 2,165 of those reporting a POA indicator of “N”; and (3) Staphylococcus aureus Septicemia, with a total of 24,327 secondary diagnoses codes being reported for that condition, with 5,490 of those reporting a POA indicator of “N”; and (4) Iatrogenic Pneumothorax, with a total of 22,506 secondary diagnoses codes being reported for that condition, with 19,581 of those reporting a POA indicator of “N.” As these four conditions had the most significant impact for reporting a POA indicator of “N,” it is reasonable to believe that these same three conditions would have the greatest number of potential MS-DRG reassignments. The frequency of discharges for the previously considered HACs that could lead to potential changes in MS-DRG assignment is discussed in the next section. We take this opportunity to remind readers that because more than one previously considered HAC diagnosis code can be reported per discharge (on a single claim) that the frequency of these diagnosis codes may be more than the actual number of discharges with a previously considered candidate condition reported as a secondary diagnosis.

Chart H—POA Status of Previously Considered “Candidate” HAC Conditions—October 2009 Through September 2010

Previously considered HAC conditionFrequency as a secondary diagnosisNot Present on AdmissionPresent on Admission
POA = NPOA = UPOA = YPOA = W
NumberPercentNumberPercentNumberPercentNumberPercent
1. Clostridium Difficile-Associated Disease (CDAD)90,24329,30632.474160.4660,39766.931240.14
2. Delirium75719025.1056774.9000.00
3. Legionnaire's Disease426276.3420.4739793.1900.00
4. Staphylococcus aureus Septicemia24,3275,49022.57650.2718,73877.03340.14
5. Methicillin-Resistant Staphylococcus aureus72,3132,1652.991240.1770,00896.81160.02
6. Iatrogenic Pneumothorax22,50619,58187.00150.072,90712.9230.01
7. Ventilator-Associated Pneumonia4,2783,15973.8450.121,11025.9540.09

In Chart I below, Column A shows the number of discharges for each previously considered candidate HAC category when the condition was reported as a secondary diagnosis. For example, there were 90,243 discharges that reported CDAD as a secondary diagnosis. Previously considered candidate HACs reported with a POA indicator of “N” or “U” may cause MS-DRG reassignment (which would result in reduced payment to the facility). Start Printed Page 51522Column C shows the discharges for each previously considered candidate HAC reported with a POA indicator of “N” or “U.” Continuing with the example of CDAD, Chart I shows that, of the 90,243 discharges, 29,722 discharges (32.94 percent) had a POA indicator of “N” or “U.” Therefore, there were a total of 29,722 discharges that could potentially have had an MS-DRG reassignment. Column E shows the number of discharges where an actual MS-DRG reassignment could have occurred; the number of discharges with CDAD that could have resulted in actual MS-DRG reassignments is 830 (2.79 percent). Thus, while there were 29,722 discharges with CDAD reported with a POA indicator of “N” or “U” that could potentially have had an MS-DRG reassignment, the result was 830 (2.79 percent) potential MS-DRG reassignments. As discussed above, there are a number of reasons why a condition reported with a POA indicator of “N” or “U” would not result in a MS-DRG reassignment.

In summary, Chart I below demonstrates there were a total of 214,785 discharges with a previously considered candidate HACs reported as a secondary diagnosis. Of those 60,538 discharges were reported with a POA indicator of “N” or “U.” The total number of discharges that could have resulted in MS-DRG reassignments is 3,768.

Chart I—Previously Considered “Candidate” HAC Discharge Frequencies—October 2009 Through September 2010

Previously considered HAC conditionDischarges with this condition as secondary diagnosis 2Discharges with this condition not present on Admission (POA = “N” or “U”) 3Cases that could change MS-DRG due to previously considered candidate HAC 4
Number (Column A)Percent (Column B)Number (Column C)Percent (Column D)Number (Column E)Percent (Column F)
1. Clostridium Difficile-Associated Disease (CDAD)90,2430.8929,72232.948302.79
2. Delirium7570.0119025.10147.37
3. Legionnaire's Disease4260.00296.81310.34
4. Staphylococcus aureus Septicemia24,2880.245,54922.85970.02
5. Methicillin-Resistant Staphylococcus aureus72,2870.712,2883.1700.00
6. Iatrogenic Pneumothorax22,5060.2219,59687.072,82114.40
7. Ventilator-Associated Pneumonia4,2780.043,16473.9630.09
Total 1214,78560,5383,768
1 Discharges can appear in more than one row.
2 Percent computed relative to total cases “at risk,” which is 10,189,168 for all candidate conditions.
3 Percent computed relative to discharges with condition as a secondary diagnosis.
4 Percent computed relative to discharges with condition as a secondary diagnosis and identified as a previously considered HAC (that is, coded as not present on admission).
Source: RTI Analysis of MedPAR IPPS Claims, October 2009 through September 2010.

j. Current and Previously Considered Candidate HACs—RTI Report on Evidence-Based Guidelines

The RTI program evaluation includes an annual report that provides references for all evidence-based guidelines available for each of the selected and previously considered candidate HACs that provide recommendations for the prevention of the corresponding conditions. Guidelines were primarily identified using the AHRQ National Guidelines Clearing House (NGCH) and the CDC, along with relevant professional societies. Guidelines published in the United States were used, if available. In the absence of U.S. guidelines for a specific condition, international guidelines were included.

Evidence-based guidelines that included specific recommendations for the prevention of the condition were identified for each of the 10 selected conditions. In addition, evidence-based guidelines were also found for the previously considered candidate conditions.

RTI prepared the annual report to summarize its findings regarding evidence-based guidelines, which can be found on the Web site at: http://www.rti.org/​reports/​cms.

k. Final Policy Regarding Current HACs and Previously Considered Candidate HACs

We believe that the RTI analysis summarized above does not provide additional information that would require us to change our previous determinations regarding either current HACs (as described in section II.F.2. of this preamble) or previously considered candidate HACs in the FY 2008 IPPS final rule with comment period (72 FR 47200 through 47218), the FY 2009 IPPS final rule (73 FR 48471 through 48491), and the FY 2010 IPPS/RY 2010 LTCH final rule (74 FR 43782 through 43785). We note that we are finalizing revisions to the Falls and Trauma HAC category, Surgical Site Infection Following Certain Bariatric procedures and DVT/PE Following Certain Orthopedic Procedures HAC categories as discussed in section II.F.2. of this preamble. (We also note that, as discussed in section II.F.3.b. of this preamble, we are not contemplating changing our current policy regarding the treatment of the “U” POA indicator.) However, we continue to encourage public dialogue about refinements to the HAC list.

We refer readers to section II.F.6. of the FY 2008 IPPS final rule with comment period (72 FR 47202 through 47218) and to section II.F.7. of the FY 2009 IPPS final rule (73 FR 48474 through 48491) for detailed discussion supporting our determination regarding each of these conditions.

G. Changes to Specific MS-DRG Classifications

In the FY 2012 IPPS/LTCH PPS proposed rule (76 FR 25816), we invited public comment on each of the MS-DRG classification proposed changes described below, as well as our proposals to maintain certain existing MS-DRG classifications, which are also discussed below. In some cases, we proposed changes to the MS-DRG classifications based on our analysis of claims data. In other cases, we proposed to maintain the existing MS-DRG classification based on our analysis of Start Printed Page 51523claims data. Below, we summarize the public comments that we received, if any, on our proposals, present our responses, and state our final policies.

1. Pre-Major Diagnostic Categories (Pre-MDCs)

a. Noninvasive Mechanical Ventilation

We received a request from the National Association for Medical Direction of Respiratory Care (NAMDRC) which suggested that we create a new MS-DRG for patients with certain respiratory conditions who receive noninvasive mechanical ventilation (NIV). The requestor stated that patients who receive NIV are almost always placed within an intensive care unit (ICU) or an emergency department and use the resources available in those areas. The requestor recommended that this new MS-DRG recognize current practice and allow for appropriate reimbursement for the technical complexity and monitoring required for NIV as a form of acute life support. According to the requestor, NIV has evolved to become first-line supportive therapy for several forms of acute respiratory failure. Lastly, the requestor recommended that the new MS-DRG identify NIV usage of approximately 6 to 12 hours to account for the “legitimate but very short term use of this therapy.”

Historically, the concept of mechanical ventilation for critically ill patients included establishment of an artificial airway, invasively, through endotracheal intubation or a tracheostomy. According to the requestor, a significant portion of these patients can now be treated through noninvasive mechanical ventilation with the use of a face or nasal mask. In the ICD-9-CM classification system, NIV is described by procedure code 93.90 (Noninvasive mechanical ventilation), while invasive mechanical ventilation is described by procedure codes 96.70 (Continuous invasive mechanical ventilation of unspecified duration), 96.71 (Continuous invasive mechanical ventilation for less than 96 consecutive hours), and 96.72 (Continuous invasive mechanical ventilation for 96 consecutive hours or more). The requestor submitted external data to illustrate trends in NIV use over the past decade. These data were derived from a survey conducted during 2002-2003 of several hospitals located in Massachusetts and Rhode Island. The requestor believed that these data indicate patients with exacerbation of chronic obstructive pulmonary disease (COPD), acute pulmonary edema, or worsening congestive heart failure are successfully managed with NIV.

For the FY 2012 IPPS/LTCH PPS proposed rule, we analyzed FY 2010 MedPAR claims data that are representative of the respiratory conditions the requestor identified when reported with NIV. We found 14 MS-DRGs reporting procedure code 93.90 using the above specifications. The MS-DRGs are as follows:

Pre-MDC MS-DRGs:

  • MS-DRG 003 (ECMO or Tracheostomy with Mechanical Ventilation 96+ Hrs or PDX Except Face, Mouth & Neck with Major O.R.)
  • MS-DRG 004 (Tracheostomy with Mechanical Ventilation 96+ Hrs or PDX Except Face, Mouth & Neck without Major O.R.)
  • MS-DRGs:
  • MS-DRG 189 (Pulmonary Edema & Respiratory Failure)
  • MS-DRG 190 (Chronic Obstructive Pulmonary Disease with MCC)
  • MS-DRG 191 (Chronic Obstructive Pulmonary Disease with CC)
  • MS-DRG 192 (Chronic Obstructive Pulmonary Disease without CC/MCC)
  • MS-DRG 204 (Respiratory Signs & Symptoms)
  • MS-DRG 207 (Respiratory System Diagnosis with Ventilator Support 96+ Hours)
  • MS-DRG 208 (Respiratory System Diagnosis with Ventilator Support <96 Hours)
  • MS-DRG 222 (Cardiac Defibrillator Implant with Cardiac Catheterization with AMI/HF/Shock with MCC)
  • MS-DRG 223 (Cardiac Defibrillator Implant with Cardiac Catheterization with AMI/HF/Shock without MCC)
  • MS-DRG 291 (Heart Failure & Shock with MCC)
  • MS-DRG 292 (Heart Failure & Shock with CC)
  • MS-DRG 293 (Heart Failure & Shock without CC/MCC)

As shown in the list above and in the chart below, the MS-DRGs identified also include those that describe invasive mechanical ventilation. The ICD-9-CM coding convention instructs the reporting of both types of mechanical ventilation when patients are admitted on noninvasive mechanical ventilation that subsequently requires invasive mechanical ventilation therapy.

The data demonstrate that, in certain MS-DRGs, for example, MS-DRGs 003, 004, and 222 that the cases with NIV primarily have shorter lengths of stay and lower average costs compared to all the cases in those MS-DRGs. Alternatively, the data for MS-DRGs 189, 190, 191, and 192 demonstrate that the cases with NIV have an increased length of stay and higher average costs, but a relatively low volume compared to all the cases in those MS-DRGs. Combining the current surgical and medical MS-DRGs into a single, new MS-DRG would include noninvasive mechanical ventilation cases with a wide range of costs for several indications with varying levels of severity. The average costs for these cases range from a low of $5,794 in MS-DRG 293 to a high of $95,940 in MS-DRG 003. In the proposed rule, we indicated that we believe the cases are more appropriately assigned and reimbursed in the MS-DRGs to which they are currently assigned.

MS-DRGNumber of casesAverage length of stayAverage costs
MS-DRG 003—All cases18,22334.7$103,492
MS-DRG 003—Cases with code 93.90 without code 96.70, 96.71, or 96.725833.395,940
MS-DRG 004—All cases19,59925.7963,022
MS-DRG 004—Cases with code 93.90 without code 96.70, 96.71, or 96.7217025.4358,500
MS-DRG 189—All cases87,6685.368,317
MS-DRG 189—Cases with code 93.90 without code 96.70, 96.71, or 96.7222,0236.0710,383
MS-DRG 190—All cases130,7315.307,140
MS-DRG 190—Cases with code 93.90 without code 96.70, 96.71 or 96.728,4506.7811,207
MS-DRG 191—All cases135,8514.496,236
MS-DRG 191—Cases with code 93.90 without code 96.70, 96.71 or 96.724,5635.418,819
MS-DRG 192—All cases115,1533.524,621
MS-DRG 192—Cases with code 93.90 without code 96.70, 96.71 or 96.722,3344.256,803
MS-DRG 204—All cases21,0492.614,310
MS-DRG 204—Cases with code 93.90 without code 96.70, 96.71 or 96.722654.177,591
MS-DRG 207—All cases32,75214.6132,897
Start Printed Page 51524
MS-DRG 207—Cases with code 93.90 without code 96.70, 96.71 or 96.72000
MS-DRG 208—All cases67,7246.9814,742
MS-DRG 208—Cases with code 93.90 without code 96.70, 96.71 or 96.72000
MS-DRG 222—All cases2,27911.9857,478
MS-DRG 222—Cases with code 93.90 without code 96.70, 96.71 or 96.725211.7955,011
MS-DRG 223—All cases3,2306.1741,754
MS-DRG 223—Cases with code 93.90 without code 96.70, 96.71 or 96.721911.0547,064
MS-DRG 291—All cases170,3996.059,585
MS-DRG 291—Cases with code 93.90 without code 96.70, 96.71 or 96.7214,2746.9512,320
MS-DRG 292—All cases220,0314.726,584
MS-DRG 292—Cases with code 93.90 without code 96.70, 96.71 or 96.725,1715.589,180
MS-DRG 293—All cases98,1343.204,410
MS-DRG 293—Cases with code 93.90 without code 96.70, 96.71 or 96.721,3813.435,794

As mentioned in the requestor's comments, and our clinical advisors agree, NIV encompasses a broad range of interventions and utilizes periods of time that range from a few hours to a few days of continuous chronic use. Resource requirements are vastly different for the various intended indications. For example, as also noted by the requestor, respiratory failure can have many forms. Our clinical advisors provided three subsets of patients as an example: Those that are given oxygen support, those that are given pressure (rate) support, and those that are intubated. There is overlap between the three subsets in that a patient may require one, two, or all three types of therapy and there are multiple options for any given patient. Our clinical advisors stated that these various subsets of patients can require significantly different resources. Lastly, respiratory failure reflects the severity of the diagnosis (it is a complication) while NIV is a therapeutic option. Unlike a major surgical intervention where the intervention creates morbidity, NIV merely reflects the severity of the underlying respiratory failure.

The requestor further noted in its comments that a significant number of patients who receive NIV fail this therapy and must be intubated and subsequently placed on a ventilator. However, those patients who require both noninvasive and invasive mechanical ventilation are already accounted for in the invasive mechanical ventilation MS-DRGs. Similar to patients with respiratory failure, patients with heart failure and shock have a comparable severity of illness where each condition reflects the severity of the diagnosis (it is a complication). Therefore, the cost is already reflected in the high resource expenditure estimates for MS-DRGs 222, 223, 291, 292, and 293, as are all other severity-correlated resource costs.

In conclusion, we indicated in the proposed rule that we believe that the data do not support the creation of a single MS-DRG to identify NIV cases. As stated previously, the average costs for the NIV cases range from a low of $5,794 in MS-DRG 293 to a high of $95,940 in MS-DRG 003. If created, this single MS-DRG would include patients with a wide range in average costs. We believe the cases are more appropriately captured in their current MS-DRGs. In addition to the clinical points raised by our clinical advisors and outlined above, the volume and length of stay data for cases where NIV was reported with the specified respiratory conditions further support their present MS-DRG assignments. Therefore, we did not propose to create a new MS-DRG for patients receiving NIV. We invited public comment on our proposal not to create a new MS-DRG for patients receiving NIV for FY 2012.

Comment: Several commenters agreed with CMS' proposal to not create a new MS-DRG for patients receiving NIV for FY 2012. One commenter did not have a position on whether or not a new MS-DRG should be created for patients receiving noninvasive mechanical ventilation. However, the commenter was concerned that reported hospital data may be incomplete. The commenter indicated that procedure code 93.90 (Noninvasive mechanical ventilation) is most likely underreported or not reported consistently because it is not required for reporting purposes. Another commenter stated that the data analysis performed on patients receiving NIV appeared to be supported by the current MS-DRG assignment. Therefore, the commenter agreed with the proposal not to create a new MS-DRG. This commenter also urged CMS to consider the Uniform Hospital Discharge Data Set (UHDDS) definition of a “reportable condition” in future analyses. This commenter noted that the UHDDS requires all significant procedures to be reported and that Medicare requires the reporting of any procedure that affects payment, whether or not it meets the definition of significant procedure. This commenter further noted that procedure code 93.90 is not considered significant by the UHDDS definition nor does it affect payment.

Response: We appreciate the commenters' support of our proposal to not create a new MS-DRG for patients receiving NIV for FY 2012. We agree with the commenters that procedure code 93.90 is likely not reported consistently and, therefore, the data included in evaluating the request may be incomplete. We encourage complete and accurate reporting of ICD-9-CM codes on each admission. As discussed in section II.G.13.b. of this final rule, we have expanded our ability to accept and process up to 25 diagnosis codes and 25 procedure codes with the implementation of 5010. We agree with the commenters who state that the current data do not support a new MS-DRG for patients receiving NIV.

We also agree with the commenter that NIV (procedure code 93.90) is not considered to be a significant procedure under UHDDS definitions and does not affect payment under Medicare policy. UHDDS definitions are used by hospitals to report inpatient data elements in a standardized manner. For further information regarding UHDDS data elements and their definitions, we refer readers to the July 31, 1985 Federal Register (50 FR 31038 through 31040) and the Internet Web site at: http://www.ncvhs.hhs.gov/​ncvhsr1.htm.

Comment: The organization that submitted the original request to create a new MS-DRG for NIV expressed appreciation to CMS for considering their request and for providing data that was unavailable to them at the time they submitted their original request. The commenter also acknowledged the potential for underreporting of NIV (procedure code 93.90). However, the commenter specifically asked to further Start Printed Page 51525refine their original request based on the data that were displayed in the FY 2012 IPPS/LTCH PPS proposed rule (76 FR 25818). The commenter suggested that CMS now limit consideration of a new MS-DRG for NIV to only the data that were displayed for 4 of the 14 MS-DRGS analyzed in response to their original request. The commenter asked CMS to now only focus on the data that was provided for the following MS-DRGs:

  • MS-DRG 189 (Pulmonary Edema & Respiratory Failure)
  • MS-DRG 190 (Chronic Obstructive Pulmonary Disease with MCC)
  • MS-DRG 191 (Chronic Obstructive Pulmonary Disease with CC)
  • MS-DRG 192 (Chronic Obstructive Pulmonary Disease without CC/MCC)

The commenter recommended that CMS utilize respiratory failure, pulmonary edema, and chronic obstructive pulmonary disease as diagnoses that, when present with NIV, define the structure of a new NIV MS-DRG.

Response: We acknowledge the commenter's request that we now consider a refined request that focuses on only 4 of the 14 MS-DRGs originally analyzed. However, due to time constraints, we were unable to conduct the necessary analysis for evaluation. We would need to perform a new and separate analysis with exact specifications that were not provided by the commenter in their modified request before we could make a final determination. For example, there are numerous ICD-9-CM codes that describe respiratory failure, pulmonary edema, and chronic obstructive pulmonary disease. The commenter did not specify the exact codes they believe would warrant this modified MS-DRG when reported with procedure code 93.90 (NIV) for us to conduct a thorough analysis in time to include our evaluation in this final rule.

Therefore, after consideration of public comments we received, we are finalizing our proposal to not create a new MS-DRG for NIV for FY 2012.

b. Debridement With Mechanical Ventilation Greater Than 96 Hours With Major Operating Room (O.R.) Procedure

We received a comment concerning the use of excisional debridement in cases with complications that lead to the need for extended mechanical ventilation. The commenter stated that patients undergoing procedures such as excisional debridement may also develop extensive complications such as respiratory failure and sepsis. The commenter indicated that these patients tend to use significant resources. The commenter stated that these cases are currently assigned to MS-DRG 207 (Respiratory System Diagnosis with Ventilator Support 96+ Hours) or MS-DRG 870 (Septicemia with or Severe Sepsis with Mechanical Ventilation 96+ Hours). The commenter expressed a concern that the operating room (OR) procedure of the excisional debridement was not fully recognized through either of these two medical MS-DRGs. The commenter requested that a new MS-DRG be created that would include mechanical ventilation of greater than 96 hours with the presence of an additional major OR procedure.

We agree that patients with long-term mechanical ventilation greater than 96 hours and a major OR procedure utilize extensive resources. However, we point out that these patient cases are not currently assigned to MS-DRG 207 or MS-DRG 870 as the commenter stated. Many of these long-term mechanical ventilation patient cases are instead assigned to MS-DRG 003 (ECMO or Tracheostomy with Mechanical Ventilation 96+ Hours or PDX, Excluding Face, Mouth & Neck with Major Operating Room Procedure). Cases that require mechanical ventilation for greater than 96 hours, that have a tracheostomy performed, and that have a procedure on the major O.R. list (including excisional debridement) are assigned to MS-DRG 003. We specifically created MS-DRG 003 to capture these complicated patients on long-term mechanical ventilation who also have a major O.R. procedure. Therefore, in the FY 2012 IPPS/LTCH PPS proposed rule, we did not propose to create a second MS-DRG to capture these patients. We welcomed public comments on our proposal not to create a new MS-DRG for these patients for FY 2012.

Comment: Several commenters supported our proposal not to create a second MS-DRG to capture patients with mechanical ventilation of greater than 96 hours with the presence of an additional major OR procedure. One commenter stated that the limited data and documentation from the requestor for the creation of a second MS-DRG prohibited them from evaluating the need for this new MS-DRG.

Response: We agree with the commenters that CMS should not create a second MS-DRG to capture patients with mechanical ventilation of greater than 96 hours with the presence of an additional major OR procedure. MS-DRG 003 (ECMO or Tracheostomy with Mechanical Ventilation 96+ Hours or PDX, Excluding Face, Mouth & Neck with major Operating Room Procedure) appropriately captures these patients.

After consideration of the public comments we received, we are not creating a new MS-DRG to capture patients on mechanical ventilation of greater than 96 hours who also have an additional major OR procedure for FY 2012.

c. Autologous Bone Marrow Transplant

In the FY 2011 IPPS/LTCH PPS final rule (75 FR 50101), effective October 1, 2011, we deleted MS-DRG 009 (Bone Marrow Transplant) and created two new MS-DRGs: MS-DRG 014 (Allogeneic Bone Marrow Transplant) and MS-DRG 015 (Autologous Bone Marrow Transplant). We created new MS-DRGs 014 and 015 because of differences in costs associated with these procedures. During the comment period for the FY 2011 IPPS/LTCH PPS proposed rule, two commenters who supported the proposed reclassification of the bone marrow transplant MS-DRGs requested further refinement to account for severity of illness. At that time, we did not subdivide MS-DRG 014 and MS-DRG 015 based on severity of illness because they did not meet our criteria for subdivision (75 FR 50102).

As we outlined in our FY 2008 IPPS/LTCH PPS final rule with comment period (72 FR 47169), in designating an MS-DRG as one that would be subdivided into subgroups based on the presence of a CC or an MCC, we developed a set of criteria to facilitate our decision-making process. The original criteria were based on average charges; we now use average costs (FY 2007 IPPS final rule, 71 FR 47882). In order to warrant creation of a CC or an MCC subgroup within a base MS-DRG, the subgroup must meet all of the following five criteria:

  • A reduction in variance of cost of at least 3 percent.
  • At least 5 percent of the patients in the MS-DRG fall within the CC or MCC subgroup.
  • At least 500 cases are in the CC or MCC subgroup.
  • There is at least a 20-percent difference in average cost between subgroups.
  • There is a $2,000 difference in average cost between subgroups.

For the FY 2012 IPPS/LTCH PPS proposed rule, we examined FY 2010 MedPAR claims data for these newly created MS-DRGs, and based on these criteria, we identified MS-DRG 015 as a possible MS-DRG that would require further subdivision. MS-DRG 014 was not identified, as this MS-DRG did not meet the criteria stated above for possible subdivision. Autologous bone Start Printed Page 51526marrow transplantation utilizes the patient's own bone marrow or stem cells in the treatment of certain cancers and bone marrow diseases. These procedures restore stem cells that have been destroyed either by chemotherapy and/or radiation treatment.

In our analysis, we found 1,338 total cases assigned to MS-DRG 015 with average costs of approximately $38,608 and an average length of stay of approximately 18.8 days. There were 1,092 cases that had a secondary diagnosis code reported on the claim that was designated as a CC or an MCC with average costs of approximately $40,974 and an average length of stay of approximately 19.7 days. There were 246 cases without a secondary diagnosis code reported on the claim that had a CC or an MCC designation with average cost of approximately $28,105 and an average length of stay of approximately 14.6 days. The following table illustrates our findings:

MS-DRGNumber of casesAverage length of stayAverage costs
MS-DRG 015—All cases1,33818.8$38,608
MS-DRG 015—Cases with MCC/CC1,09219.740,974
MS-DRG 015—Cases without MCC/CC24614.628,105

We found that the cases reported with a secondary diagnosis code of a CC or an MCC were more costly and had a longer average length of stay than both the overall cases assigned to MS-DRG 015 and the cases without a CC or an MCC. The cases without a CC or an MCC were less costly and had a shorter average length of stay than both the cases with a CC or an MCC and the overall cases assigned to that MS-DRG. Based on our analysis, all five criteria for a subgroup division were met, thereby supporting a 2-level severity split for MS-DRG 015. Therefore, for FY 2012, we proposed to delete MS-DRG 015 and create two new MS-DRGs:

  • Proposed MS-DRG 016 (Autologous Bone Marrow Transplant with MCC/CC); and
  • Proposed MS-DRG 017 (Autologous Bone Marrow Transplant without MCC/CC).

We invited public comment on our proposal to delete MS-DRG 015 and create two new MS-DRGs 016 and 017 for autologous bone marrow transplant for FY 2012.

Comment: Several commenters supported our proposed changes for a 2-level severity split for autologous bone marrow transplant cases. One commenter stated that it appreciated CMS' further refinement to account for severity of illness as it reflects current experience with transplant eligible patients who present with a range of comorbidities and other complicating factors.

Response: We appreciate the support of the commenters.

Comment: One commenter disagrees with our proposed refinement of MS-DRG 014 to account for severity of illness. The commenter contended that the recipient patient population for both autologous and allogeneic transplants is similar and that recognition of the variation in the patient population for both is warranted. The commenter requested a re-review of the cost variances for MS-DRG 014 because allogeneic transplant patients are often treated for similar comorbidities as autologous transplant patients prior to transplant and during post transplant care.

Response: As we outlined in the proposed rule (76 FR 25819), to warrant creation of a CC or MCC subgroup within a base MS-DRG, the subgroup must meet all of the five criteria. MS-DRG 014 did not meet the criteria for possible subdivision because at least 500 cases were not in the CC or MCC subgroup.

After consideration of the public comments we received, we are finalizing our proposal to delete MS-DRG 015 and to create two new MS-DRGs: MS-DRG 016 (Autologous Bone Marrow Transplant with CC/MCC); and MS-DRG 017 (Autologous Bone Marrow Transplant without CC/MCC). We note that we have amended the final titles of new MS-DRGs 015 and 016 to place “CC” before “MCC.”

2. MDC 1 (Diseases and Disorders of the Nervous System): Rechargeable Dual Array Deep Brain Stimulation System

We received a public comment in response to the FY 2011 IPPS/LTCH PPS proposed rule regarding the MS-DRG assignment for rechargeable dual array deep brain neurostimulators. In the FY 2011 IPPS/LTCH PPS final rule (75 FR 50128), we indicated that we considered this comment outside of the scope of the proposed rule as we did not propose any changes for these procedures for FY 2011. However, we addressed this issue in the FY 2012 IPPS/LTCH PPS proposed rule.

Deep brain stimulation is a surgical treatment that involves the implantation of a neurostimulator, used in the treatment of essential tremor, Parkinson's disease, dystonia, and chronic pain. The commenter recommended that CMS assign the combination of procedure codes representing rechargeable systems for deep brain stimulation therapy, procedure code 02.93 (Implantation or replacement of intracranial neurostimulator lead(s)) and procedure code 86.98 (Insertion or replacement of dual array rechargeable neurostimulator pulse generator) to MS-DRG 023 (Craniotomy with Major Device Implant/Acute Complex CNS PDX with MCC or Chemo Implant) and MS-DRG 024 (Craniotomy with Major Device Implant/Acute Complex CNS PDX without MCC).

The commenter stated that this recommendation would allow all full system dual array deep brain stimulation cases to be appropriately grouped to the same MS-DRGs. Currently, procedure codes 02.93 and 86.98 are assigned to MS-DRG 025 (Craniotomy and Endovascular Intracranial Procedures with MCC), MS-DRG 026 (Craniotomy and Endovascular Intracranial Procedures with CC), and MS-DRG 027 (Craniotomy and Endovascular Intracranial Procedures without CC/MCC), while the procedure codes for the nonrechargeable dual array systems, procedure codes 02.93 and 86.95 (Insertion or replacement of dual array neurostimulator pulse generator, not specified as rechargeable), are already assigned to MS-DRGs 023 and 024. The commenter stated that the procedures to implant the rechargeable and nonrechargeable dual array systems are similar clinically as well as comparable in resource utilization.

For the FY 2012 IPPS/LTCH PPS proposed rule, we analyzed FY 2010 MedPAR data and found a total of 16 full system rechargeable dual array deep brain stimulation systems reported with procedure codes 02.93 and 86.98 assigned to MS-DRGs 025 through 027. We found one case assigned to MS-DRG 025 and one case assigned to MS-DRG Start Printed Page 51527026. The majority of the cases, 14, were assigned to MS-DRG 027, with average costs of approximately $23,870 and an average length of stay of approximately 2.2 days. We found that the deep brain stimulation cases assigned to MS-DRG 027 had higher average costs than the overall cases assigned to MS-DRG 027 of approximately $14,200. However, the average length of stay was shorter for these cases than the overall length of stay for MS-DRG 027 cases of approximately 3.7 days.

We also examined the data for the nonrechargeable dual array systems to assess the commenter's assumption that both the rechargeable and nonrechargeable dual array systems are similar in resource use. We found 155 total nonrechargeable dual array systems (procedure codes 02.93 and 86.95) assigned to MS-DRGs 023 and 024. There were 5 cases assigned to MS-DRG 023, with average costs of approximately $36,159 and an average length of stay of approximately 10 days. We found that the majority of the cases, 150, were assigned to MS-DRG 024, with average costs of approximately $25,855 and an average length of stay of approximately 2.2 days. We believe that these data support the commenter's statement that, for the majority of these cases, the resource use is similar for both systems.

For comparison purposes, if we proposed the changes that the commenter suggested, those deep brain stimulation cases currently assigned to MS-DRG 027 and the one case assigned to MS-DRG 026 (with average costs of approximately $27, 836) would be reassigned to MS-DRG 024. The average costs of approximately $23,870 of these deep brain stimulation cases assigned to MS-DRG 027 are similar to the overall average costs of approximately $23,249 for MS-DRG 024. The one case assigned to MS-DRG 025 (with average costs of approximately $29,361) would be reassigned to MS-DRG 023 (with average costs of approximately $34,168). The following table illustrates our findings:

MS-DRGNumber of casesAverage length of stayAverage costs
MS-DRG 023—All cases4,23811.8$34,168
MS-DRG 023—Cases with codes 02.93 and 86.95510.036,159
MS-DRG 024—All cases1,5927.623, 249
MS-DRG 024—Cases with codes 02.93 and 86.951502.225,855
MS-DRG 025—All cases11,50511.029,524
MS-DRG 025—Cases with codes 02.93 and 86.9812.029, 361
MS-DRG 026—All cases9,7827.019,125
MS-DRG 026—Cases with codes 02.93 and 86.9813.027,836
MS-DRG 027—All cases10,9363.714,200
MS-DRG 027—Cases with codes 02.93 and 86.98142.223,870

Based on our findings, in the proposed rule, we indicated that we believe that the data support reassigning the combination of procedure codes representing rechargeable systems for deep brain stimulation therapy, code 02.93 and code 86.98, to MS-DRGs 023 and 024. Our clinical advisors support this reassignment. Therefore, we proposed to assign rechargeable dual array systems for deep brain stimulation cases identified by reporting both procedure codes 02.93 and 86.98 to MS-DRGs 023 and 024 for FY 2012. We invited public comment on our proposal to assign these cases to MS-DRG 023 and 024 for FY 2012.

Comment: Several commenters supported our proposal to reassign rechargeable dual array deep brain stimulation cases.

Response: We appreciate the support of the commenters. As stated above, we believe that the assignment of these cases to MS-DRG 023 and 024 is appropriate.

After consideration of public comments we received, we are adopting as final our proposal to assign rechargeable dual array systems for deep brain stimulation cases identified by reporting both procedure codes 02.93 and 86.98 to MS-DRGs 023 and 024 for FY 2012.

3. MDC 3 (Diseases and Disorders of the Ear, Nose, Mouth, and Throat): Skull Based Surgeries

We received a request from a commenter recommending that CMS reclassify skull-based surgical procedures that are currently assigned to MS-DRGs 135 and 136 (Sinus and Mastoid Procedures with CC/MCC and without CC/MCC, respectively) and reassign them to MS-DRGs 025, 026, and 027 (Craniotomy and Endovascular Intracranial Procedures with MCC, with CC, and without CC/MCC, respectively). The commenter stated that the current MS-DRG assignment does not reflect the resource utilization and technical complexity of these difficult procedures when performed for anterior skull base tumors.

Skull (or cranial) based surgery is performed for a variety of serious medical conditions including esthesioneuroblastomas, which are rare, malignant tumors that arise from the epithelium overlying the olfactory bulb; sinonasal melanomas, which are malignant melanomas that may develop in the mucosa of the nose and sinuses; and sinonasal undifferentiated carcinomas, which are rapidly growing malignant tumors arising in the nasal cavity and/or sinuses. These types of conditions are generally identified by the following ICD-9-CM diagnosis codes:

  • 160.0 (Malignant neoplasm of nasal cavities)
  • 160.1 (Malignant neoplasm of auditory tube, middle ear, and mastoid air cells)
  • 160.2 (Malignant neoplasm of maxillary sinus)
  • 160.3 (Malignant neoplasm of ethmoidal sinus)
  • 160.4 (Malignant neoplasm of frontal sinus)
  • 160.5 (Malignant neoplasm of sphenoidal sinus)
  • 160.8 (Malignant neoplasm of other accessory sinuses)
  • 160.9 (Malignant neoplasm of accessory sinus, unspecified)
  • 210.7 (Benign neoplasm of nasopharynx)
  • 212.0 (Benign neoplasm of nasal cavities, middle ear, and accessory sinuses)

According to the commenter, procedure code 22.63 (Ethmoidectomy) describes the type of surgery being performed for these patients and is currently assigned to MS-DRGs 135 and 136.

For the FY 2012 IPPS/LTCH PPS proposed rule, using the FY 2010 MedPAR file, we examined data on Start Printed Page 51528cases identified by procedure code 22.63 when reported with one of the above listed diagnosis codes in MS-DRGs 135 and 136. We found a total of 402 cases in MS-DRG 135 with an average length of stay of 6.30 days and average costs of $12,869. We found only 23 cases in MS-DRG 135 identified by procedure code 22.63 with one of the diagnosis codes listed above with an average length of stay of 3.96 days and average costs of $10,510. In MS-DRG 136, there were a total of 320 cases with an average length of stay of 2.36 days and average costs of $6,683. We found only 27 cases in MS-DRG 136 identified by procedure code 22.63 with one of the diagnosis codes listed above with an average length of stay of 2.04 days and average costs of $6,844. As shown in the table below, the cases reporting procedure code 22.63 in MS-DRGs 135 and 136 have a lower volume, a shorter length of stay, and primarily lower average costs compared to all cases in MS-DRGs 135 and 136. As we indicated in the proposed rule, the data demonstrated that these cases are appropriately assigned to their current MS-DRG classifications.

MS-DRGNumber of casesAverage length of stayAverage costs
MS-DRG 135—All cases4026.30$12,869
MS— DRG 135—Cases with procedure code 22.63 and diagnosis code 160.0 through 160.9 or 210.7 or 212.0233.9610,510
MS-DRG 136—All cases3202.366,683
MS-DRG 136—Cases with procedure code 22.63 and diagnosis code 160.0 through 160.9 or 210.7 or 212.0272.046,844

We also analyzed claims data for MS-DRGs 25 through 27. We determined that if the cases identified by procedure code 22.63 were to be reassigned to MS-DRGs 25-27, they would be significantly overpaid. As shown in the table below, we found that the average costs for these MS-DRGs range from $14,200 to $29,524.

MS-DRGNumber of casesAverage length of stayAverage costs
MS-DRG 025—All cases11,50510.95$29,524
MS-DRG 026—All cases9,7827.0019,125
MS-DRG 027—All cases10,9363.7114,200

In summary, we indicated in the proposed rule that the data did not support moving cases with procedure code 22.63 when reported with one of the previously listed diagnosis codes from MS-DRGs 135 and 136 to MS-DRGs 25, 26 and 27. We invited public comment on our proposal not to make any MS-DRG modifications for these codes for FY 2012.

Comment: Several commenters supported our proposal to not make any revisions to reclassify skull-based surgical procedures that are currently assigned to MS-DRGs 135 and 136 and reassign them to MS-DRGs 025, 026, and 027.

Response: We appreciate the commenters' support.

After consideration of the public comment we received, we are finalizing our proposal to not make any modifications for skull-based surgeries for FY 2012.

4. MDC 5 (Diseases and Disorders of the Circulatory System)

a. Percutaneous Mitral Valve Repair With Implant

Procedure code 35.97 (Percutaneous mitral valve repair with implant) was created for use beginning October 1, 2010 (FY 2011) after the concept of a percutaneous valve repair was presented and approved at the February 2010 ICD-9-CM Coordination and Maintenance Committee Meeting. Procedure code 35.97 was created at that time to describe the MitraClipTM device and any other percutaneous mitral valve repair devices currently on the market. This procedure code is assigned to the following MS-DRGs: 231 and 232 (Coronary Bypass with PTCA with MCC and without MCC, respectively); 246 (Percutaneous Cardiovascular Procedure with Drug-Eluting Stent with MCC or 4+ Vessels/Stents); 247 (Percutaneous Cardiovascular Procedure with Drug-Eluting Stent without MCC); 248 (Percutaneous Cardiovascular Procedure with Non-Drug-Eluting Stent with MCC or 4+ Vessels/Stents); 249 (Percutaneous Cardiovascular Procedure with Non-Drug-Eluting Stent without MCC); 250 (Percutaneous Cardiovascular Procedure without Coronary Artery Stent or AMI with MCC); and 251 (Percutaneous Cardiovascular Procedure without Coronary Artery Stent or AMI without MCC).

According to the Food and Drug Administration's (FDA's) terms of the clinical trial for MitraClipTM, the device is to be implanted in patients without any additional surgeries performed. Therefore, based on these terms, we believe that the most likely MS-DRG assignments would be MS-DRGs 250 and 251, as described above. However, because procedure code 35.97 has only been in use since October 1, 2010, there are no claims data in the most recent MedPAR update file with which to evaluate any alternative MS-DRG assignments. Therefore, we did not propose to make any MS-DRG changes for procedure code 35.97 for FY 2012. We proposed to keep procedure code 35.97 in its current MS-DRG assignments. We invited public comment on this proposal.

Comment: Several commenters addressed our proposal. One commenter supported our proposal not to make any MS-DRG changes in the current assignment of procedure code 35.97, but also recommended that CMS review the MS-DRG assignment for FY 2013 when more claims data become available. In addition, one commenter indicated that it “* * * has no objections to CMS' proposed changes to the MS-DRG classifications and the Medicare Code Editor, which seem reasonable, given the data and information provided.”

Response: We appreciate the commenters' support and suggestion.

After consideration of the public comments we received, we are adopting as final without modification our Start Printed Page 51529proposal to keep procedure code 35.97 (Percutaneous mitral valve repair with implant) in its current MS-DRG assignments of 231 and 232 (Coronary Bypass with PTCA with MCC and without MCC, respectively); 246 (Percutaneous Cardiovascular Procedure with Drug-Eluting Stent with MCC or 4+ Vessels/Stents); 247 (Percutaneous Cardiovascular Procedure with Drug-Eluting Stent without MCC); 248 (Percutaneous Cardiovascular Procedure with Non-Drug-Eluting Stent with MCC or 4+ Vessels/Stents); 249 (Percutaneous Cardiovascular Procedure with Non-Drug-Eluting Stent without MCC); 250 (Percutaneous Cardiovascular Procedure without Coronary Artery Stent or AMI with MCC); and 251 (Percutaneous Cardiovascular Procedure without Coronary Artery Stent or AMI without MCC).

In addition, we plan to conduct a review of the MedPAR data for code 35.97 in our next annual IPPS update cycle (that is, for FY 2013) to determine if the MS-DRG assignments as listed above are the most appropriate MS-DRGs for this procedure.

b. Aneurysm Repair Procedure Codes

Thoracic aorta defects, such as aneurysm, dissection, or injury, are uncommon but serious conditions that may arise from a disease or an accident. Some patients can be medically managed but most are treated with surgery. Often these defects result in death if they are not diagnosed and treated promptly. Currently, there are two techniques used for repair of aortic defects; both are O.R. procedures performed in an inpatient hospital setting. These two procedures are described by ICD-9-CM procedure codes 38.45 (Resection of vessel with replacement, thoracic vessel) and 39.73 (Endovascular implantation of graft in thoracic aorta). Both procedure codes 38.45 and 39.73 are currently assigned to MS-DRGs 237 (Major Cardiovascular Procedures with MCC or Thoracic Aortic Aneurysm Repair) and 238 (Major Cardiovascular Procedures without MCC).

We received a request that we consider the reassignment of procedure codes 38.45 and 39.73 within the MS-DRG structure by removing the procedure codes from MS-DRGs 237 and 238 and adding them to a more clinically coherent set of MS-DRGs reflecting higher resource consumption. The requestors believed that, based on their analysis of MedPAR claims data of MS-DRGs 237 and 238, the resource utilization of both the endovascular and open repairs of the abdominal and thoracic aortas are higher than the overall average resource utilization for the MS-DRGs to which these procedures are currently assigned. The requestors also believed that an unusually high number of cases probably fall into cost outlier status.

For the FY 2012 IPPS/LTCH PPS proposed rule, we reviewed the MedPAR claims data for these two procedure codes. Our findings are shown in the following two tables.

MS-DRGNumber of casesAverage length of stayAverage costs
MS-DRG 237—All cases20,68010.03$34,268
MS-DRG 237—Cases with procedure code 39.731,8517.7341,033
MS-DRG 237—Cases without procedure code 39.7318,82910.2633,603
MS-DRG 238—All cases35,7054.0820,597
MS-DRG 238—Cases with procedure code 39.73000
MS-DRG 238—Cases without procedure code 39.7335,7054.0820,597
MS-DRGNumber of casesAverage length of stayAverage costs
MS-DRG 237—All cases20,68010.03$34,268
MS-DRG 237—Cases with procedure code 38.4544813.2951,953
MS-DRG 237—Cases without procedure code 38.4520,2349.9633,878
MS-DRG 238—All cases35,7054.0820,597
MS-DRG 238—Cases with procedure code 38.454667.2930,219
MS-DRG 238—Cases without procedure code 38.4535,2394.0320,465

Our findings of the analysis of the cases with procedure code 39.73 showed that the average costs are substantially higher than those costs for the cases overall in both MS-DRGs 237 and 238. We found that the average length of stay for the 1,851 cases identified in MS-DRG 237 is somewhat lower at 7.73 days than the average length of stay of 10.26 days in cases not containing procedure code 39.73.

Our findings of the analysis of the cases with procedure code 38.45 showed that both the average costs and the average length of stay are considerably higher than the average costs and the average length of stay for those cases without procedure code 38.45.

In addition, we reviewed the cases in which both procedure codes 38.45 and 39.73 were documented during the same admission. As can be seen in the charts below, we found 22 cases in which both procedure codes 38.45 and 39.73 were reported. Therefore, the sum of the values in the next two charts below will differ from the charts above because the cases containing both procedure codes have been removed and the data have been reworked.

MS-DRGNumber of casesAverage length of stayAverage costs
MS-DRG 237—All cases20,68010.03$34,268
MS-DRG 237—Cases with procedure code 39.73 and without procedure code 38.451,8297.6840,862
MS-DRG 237—Cases with procedure code 38.45 and without procedure code 39.7342413.3651,783
MS-DRG 238—All cases35,7054.0820,597
Start Printed Page 51530
MS-DRG 238—Cases with procedure code 39.73 and without procedure code 38.45000
MS-DRG 238—Cases with procedure code 38.45 and without procedure code 39.734667.2930,219
MS-DRGNumber of casesAverage length of stayAverage costs
MS-DRG 237—All cases20,68010.03$34,268
MS-DRG 237—Cases with procedure code 38.45 and with procedure code 39.732211.8655,243
MS-DRG 237—Cases without procedure code 38.45 or procedure code 39.7318,40510.1933,184
MS-DRG 238—All cases35,7054.0820,597
MS-DRG 238—Cases with procedure code 38.45 and with procedure code 39.73000
MS-DRG 238—Cases without procedure code 38.45 or procedure code 39.7335,2394.0320,465

We found in our analysis of the claims data for cases with both procedure codes 38.45 and 39.73 that the average costs are substantially higher than those costs for the cases overall in MS-DRG 237. In addition, we found that the average length of stay for the 22 cases with both procedure codes 38.45 and 39.73 is higher at 11.86 days than the average length of stay of 10.03 days for all cases in MS-DRG 237.

Our analysis of the claims data for the procedure codes in MDC 5 showed that procedure code 38.45 is also assigned to MS-DRGs 228 (Other Cardiothoracic Procedures with MCC), 229 (Other Cardiothoracic Procedures with CC), and 230 (Other Cardiothoracic Procedures without CC/MCC) when it occurs in combination with procedure code 38.44 (Resection of vessel with replacement, aorta, abdominal). Procedure code 39.73 is not assigned to MS-DRGs 228 through 230, and review of the data showed that there were no cases that had been reported in these MS-DRGs.

The table below shows our findings of the average costs and the average length of stay for procedure code 38.45 reported in combination with procedure code 38.44 in MS-DRGs 228 through 230 and the average costs and the average length of stay in all cases in MS-DRGs 228 through 230 when both procedure codes 38.45 and 38.44 are not assigned.

MS-DRGNumber of casesAverage length of stayAverage costs
MS-DRG 228—All cases2,08413.79$49,488
MS-DRG 228—Cases with procedure code 38.45 and procedure code 38.4427615.1856,246
MS-DRG 228—Cases without procedure code 38.45 and without procedure code 38.441,80813.5848,456
MS-DRG 229—All cases2,3548.3131,148
MS-DRG 229—Cases with procedure code 38.45 and procedure code 38.4415710.6837,723
MS-DRG 229—Cases without procedure code 38.45 and without procedure code 38.442,1978.1430,678
MS-DRG 230—All cases6285.4524,236
MS-DRG-230—Cases with procedure code 38.45 and procedure code 38.44347.1827,054
MS-DRG 230—Cases without procedure code 38.45 and without procedure code 38.445945.3524,075

Our findings show that both the average length of stay and average costs are higher in those cases containing procedure code 38.45 than those cases without this procedure code in MS-DRGs 228 through 230.

We then analyzed the 1,851 cases containing procedure code 39.73 in MS-DRGs 237 and 238 and the 912 cases containing procedure code 38.45 in MS-DRGs 237 and 238 to determine if they would meet the established criteria for a 3-way severity of illness split. This criterion is described in section III.G.1.c. of this preamble. The chart below shows our findings, with MS-DRG 237 acting as a severity of illness proxy for all cases, as there were no cases in MS-DRG 238. In the chart, the extensions “-1,” “-2,” and “-3” correspond to severity levels, with “-1” representing cases with MCC, “-2” representing cases with CC, and “-3” representing cases without CC/MCC.

MS-DRGNumber of casesAverage length of stayAverage costs
MS-DRG 237-1—All cases20,68010.03$34,268
MS-DRG 237-1—Cases with procedure code 39.7363712.1457,834
MS-DRG 237-1—Cases with procedure code 38.4544613.2951,954
MS-DRG 237-2—All cases17,3565.7322,083
MS-DRG 237-2—Cases with procedure code 39.736596.8938,673
MS-DRG 237-2—Cases with procedure code 38.453538.1431,480
MS-DRG 237-3—All cases18,3492.5219,183
MS-DRG 237-3—Cases with procedure code 39.735553.6527,993
MS-DRG 237-3—Cases with procedure code 38.451136.3026,280
Start Printed Page 51531

Our next step was to analyze the claims data for the cases in the clinically coherent MS-DRGs to which we proposed to move these cases. These six MS-DRGs are: 216 (Cardiac Valve & Other Major Cardiothoracic Procedures with Cardiac Catheterization with MCC); 217 (Cardiac Valve & Other Major Cardiothoracic Procedures with Cardiac Catheterization with CC); 218 (Cardiac Valve & Other Major Cardiothoracic Procedures with Cardiac Catheterization without CC/MCC); 219 (Cardiac Valve & Other Major Cardiothoracic Procedures without Cardiac Catheterization with MCC), 220 (Cardiac Valve & Other Major Cardiothoracic Procedures without Cardiac Catheterization with CC); and 221 (Cardiac Valve & Other Major Cardiothoracic Procedures without Cardiac Catheterization without CC/MCC). For the sake of the grouping algorithm, procedure codes 39.73 and 38.45 must also be added to MS-DRGs 216 through 219. However, if these codes are documented in cases in which a cardiac catheterization occurs, they will be “trumped” by those catheterizations. Therefore, when we reviewed the data in order to make length of stay and cost comparisons, we only used the three MS-DRGs to which procedure codes 39.73 and 38.45 would appear without cardiac catheterization; that is MS-DRGs 219, 220, and 221. Our findings describing these three MS-DRGs are displayed in the following chart:

MS-DRGNumber of casesAverage length of stayAverage costs
MS-DRG 21912,80512.76$51,399
MS-DRG 22015,9887.6534,270
MS-DRG 2214,0435.9028,974

Our evaluation of the severity levels in the cases containing procedure codes 39.73 and 38.45 using the proxy MS-DRGs 237-1, 237-2, and 237-3 compared to the claims data in the table above with MS-DRGs 219 through 221 demonstrates that the cases are similar in resource consumption. In addition, the cases are clinically coherent.

We indicated in the proposed rule that, by moving procedure code 38.45 to MS-DRGs 216 through 221, we did not believe that there is a need for combination codes 38.45 plus 38.44 to be specifically assigned to MS-DRGs 228, 229, and 230. Because MS-DRGs 216 through 221 are higher in the surgical hierarchy for MDC 5 than MS-DRGs 228 through 230, the result of the proposal would be that either procedure code 38.45 by itself or in combination with procedure code 38.44 will always be assigned to MS-DRGs 216 through 221. We indicated that when reported alone, under this policy, procedure code 38.44 would continue to be assigned to MS-DRGs 237 and 238, as it has been in the past.

Therefore, for FY 2012, we proposed to remove procedure codes 38.45 and 39.73 from MS-DRGs 237 and 238 and to add these codes to MS-DRGs 216, 217, 218, 219, 220, and 221 based on our findings of similar resource consumption and clinical coherence. To conform to this proposed change, we also proposed to revise the title of MS-DRG 237 (Major Cardiovascular Procedures with MCC or Thoracic Aortic Aneurysm Repair) by removing the terms “or Thoracic Aortic Aneurysm Repair.” Therefore, the new proposed title of MS-DRG 237 was “Major Cardiovascular Procedures with MCC.” We invited public comment on these proposals.

Comment: Several commenters supported the proposed changes.

Response: We appreciate the commenters' support.

Therefore, as we proposed, we are adopting our proposed changes as final. In summary, we are removing procedure codes 38.45 and 39.73 from MS-DRGs 237 and 238 and adding these two codes to the following six MS-DRGs: 216; 217; 218; 219; 220; and 221. In addition, we are revising the title of MS-DRG 237 to read “Major Cardiovascular Procedures with MCC.” The title of MS-DRG 238 (Major Cardiovascular Procedures without MCC) will remain the same.

5. MDC 8 (Diseases and Disorders of the Musculoskeletal System and Connective Tissue)

a. Artificial Discs

In response to the FY 2011 IPPS/LTCH PPS proposed rule, we received a public comment that was outside of the scope of any proposal in that proposed rule. The commenter urged CMS to reassign procedure code 84.62 (Insertion of total spinal disc prosthesis, cervical) from MS-DRG 490 (Back and Neck Procedures Except Spinal Fusion with CC/MCC or Disc Device/Neurostimulator) into MS-DRGs 471 through 473 (Cervical Spinal Fusion with MCC, with CC, and without CC/MCC, respectively). In addition, the commenter requested that CMS reassign procedure code 84.65 (Insertion of total spinal disc prosthesis, lumbosacral) from MS-DRG 490 (Back and Neck Procedures Except Spinal Fusion with CC/MCC or Disc Device/Neurostimulator) to MS-DRGs 459 and 460 (Spinal Fusion Except Cervical with MCC and without MCC, respectively). However, the commenter also provided an alternative option to reassigning the procedure codes to different MS-DRGs. The commenter suggested the creation of a new, separate MS-DRG for the two artificial disc procedures if reassignment to the fusion MS-DRGs was not feasible.

We refer the reader to the FY 2008 IPPS proposed rule and final rule with comment period (72 FR 24731 through 24735 and 47226 through 47232) for discussion on the comprehensive evaluation of all the spinal DRGs in the development of the MS-DRG classification system. The modifications made to the spinal DRGs for FY 2008 recognized the similar utilization of resources, differences in levels of severity, and the complexity of the services being performed on patients undergoing the various types of spinal procedures.

For the FY 2012 IPPS/LTCH PPS proposed rule, we analyzed FY 2010 MedPAR claims data for procedure codes 84.62 and 84.65 in MS-DRG 490 and compared those results to the claims data for MS-DRGs 459, 460, 471, 472, and 473. We found a total of 19,840 cases in MS-DRG 490 with an average length of stay of 4.24 days and average costs of $11,940. As displayed in the chart below, we found 97 cases reporting procedure code 84.62, with an average length of stay of 1.80 days and average costs of $13,194 in MS-DRG 490. We also found 35 cases reporting procedure code 84.65, with an average length of stay of 2.91 days and average costs of $20,753. While average costs for the artificial disc cases were slightly higher ($1,254 for procedure code 84.62 and $8,813 for procedure code 84.65) compared to the average cost for all cases in MS-DRG 490, the artificial disc cases were of extremely low volume and reflected shorter lengths of stay Start Printed Page 51532compared to all the cases in MS-DRG 490.

MS-DRGNumber of casesAverage length of stayAverage costs
MS-DRG 459—All cases3,6508.92$40,218
MS-DRG 460—All cases60,8653.7525,268
MS-DRG 471—All cases2,6868.9229,837
MS-DRG 472—All cases8,5863.7818,494
MS-DRG 473—All cases24,3231.8013,775
MS-DRG 490—All cases19,8404.2411,940
MS-DRG 490—Cases with code 84.62971.8013,194
MS-DRG 490—Cases with code 84.65352.9120,753

We recognized the disparity in average costs for cases reporting the insertion of a cervical or lumbar artificial disc in MS-DRG 490 compared to all the cases in that MS-DRG. However, we did not believe this supports reassignment of procedure codes 84.62 and 84.65 to the MS-DRGs for spinal fusion as the commenter requested. Even with the disparity in costs, clinically, the insertion of an artificial disc is not a spinal fusion. Therefore, reassignment of the artificial disc cases to the fusion MS-DRGs would be clinically inappropriate. In addition, for certain Medicare populations, the insertion of an artificial disc is considered a noncovered procedure.

As stated earlier, the commenter also provided an alternative option to reassigning procedure codes 84.62 and 84.65. The commenter suggested the creation of a new, separate MS-DRG for the two artificial disc procedures if reassignment to the fusion MS-DRGs was not feasible. In our evaluation of the claims data and as shown above in the data chart, the artificial disc cases are of extremely low volume; therefore, we do not believe the findings warrant the creation of a separate MS-DRG.

We invited public comment on our proposal not to reassign procedure code 84.62 from MS-DRG 490 to MS-DRGs 471 through 473 and procedure code 84.65 from MS-DRG 490 to MS-DRGs 459 and 460. We also invited public comment on our proposal not to create a new, separate MS-DRG for artificial disc procedures (codes 84.62 and 84.65) for FY 2012.

Comment: Several commenters supported our proposal not to create a new MS-DRG for artificial disc procedures, as well as not to reassign the procedure codes for insertion of a cervical or lumbar artificial disc (codes 84.62 and 84.65) to the fusion MS-DRGs (459 and 460 and 471 through 473). One commenter agreed with our statement that the insertion of an artificial disc is not the same as a fusion and should not be included in the fusion MS-DRGs. Another commenter agreed that reassignment of the artificial discs to the fusion MS-DRGs does not appear to be a clinically appropriate classification despite comparative costs. This commenter believed that limitations in the data, such as the low volume of cases, may be due to artificial discs being a noncovered procedure for certain Medicare populations and recommended revisiting our analysis for a new separate MS-DRG if the coverage policy is revised in the future.

Response: We appreciate the commenters' support for our proposals. We also acknowledge the commenters recommendation to conduct further analysis for total disc replacement procedures should the coverage policy pertaining to certain Medicare populations be modified in the future.

Comment: One commenter expressed appreciation to CMS for reviewing the current MS-DRG assignment for total disc replacement (TDR) procedures involving the cervical and lumbar areas. However, the commenter disagreed with the proposed rule analysis, stating it was limited to only the MedPAR database. The commenter believed that information from two publicly available databases, the Healthcare Cost and Utilization Project (HCUP) database and the California Patient Discharge database, support modifications to the TDR procedures. According to the commenter, “CMS' current MS-DRG assignment and resulting reimbursement at thirty to fifty percent (30-50%) of fusion procedures is well below the average eighty-eight percent (88%) ratio of TDR to fusion charges observed in the two additional databases analyzed.”

The commenter acknowledged that procedure code 84.62 and procedure code 84.65 are currently assigned to MS-DRG 490, regardless of whether or not the patient has a CC or MCC. The commenter also acknowledged the evaluation of the spinal procedure MS-DRGs in the FY 2008 IPPS proposed and final rules (72 FR 24731 through 24735 and 47226 through 47232), respectively. However, according to the commenter, the MS-DRG assignment for TDR procedures requires a more recent and thorough evaluation.

The commenter provided a comparison of how TDR procedures differ from other procedures assigned to MS-DRG 490. The commenter also stated that TDR procedures are more complex than other procedures in the MS-DRG. For example, the commenter noted that MS-DRG 490 includes procedure codes 84.58 and 84.59, representing spinal disc devices such as the X-Stop, Coflex, Dynesys, and M-Brace which do not involve removal of a disc. The commenter also noted that procedure code 80.51 (Excision of intervertebral disc), which comprises only one aspect of the total surgery required for TDR, is assigned to the same MS-DRG. The commenter further noted that because the two procedures are in the same MS-DRG, the hospital payment is the same for both procedures.

In addition, the commenter included a comparison of TDR cases and fusion cases, noting that there appeared to be greater similarity in resource use between fusion and TDR procedures than between TDR and other procedures in MS-DRG 490. The commenter reported that TDR is an alternative treatment option to spinal fusion and that patients receiving TDR have the same diagnosis as those receiving spinal fusion. In terms of similarity, the commenter stated that during both a TDR and spinal fusion surgery, the affected disc is removed, allowing normal disc height to be restored by the use of an implant. In spinal fusion, stability of the spinal segment is accomplished by the use of an implant and instrumentation such as plates, rods or screws and use of bone graft promotes osseous fusion of the vertebrae. For TDR procedures, an implant that allows motion is inserted into the disc space. According to the Start Printed Page 51533commenter, these factors demonstrate clinical homogeneity and resource utilization for both TDR and spinal fusion.

The commenter did not dispute our findings that TDR procedures have shorter lengths of stay and are higher in costs compared to other procedures within MS-DRG 490. The commenter also acknowledged that TDR procedures are low volume and represent a fraction of all the procedures assigned to the MS-DRG.

Response: We appreciate and acknowledge the commenter's provision of data related to the HCUP database and the California Patient Discharge database. However, we point out that the commenter failed to identify the data related to each specified type of artificial disc replacement procedure in its analysis. We do not consider the data to be reliable for purposes of determining MS-DRG reclassifications in the form provided, as the data do not identify the number of cases, average length of stay, or average costs associated with a cervical versus a lumbar disc replacement. Further, in its own submitted comments, the commenter notes that the data provided were based on charges, not costs. In addition, as stated in the FY 2012 IPPS proposed rule (76 FR 25800), in order for us to consider using particular non-MedPAR data, we must have sufficient time to evaluate and test the data. This allows us time to test the data and make a preliminary assessment as to the feasibility of using the data. We evaluate patient care costs using average charges and lengths of stay as proxies for costs and rely on the judgment of our medical advisors to decide whether patients are clinically distinct or similar to other patients in the MS-DRG. We also consider variations and whether observed average differences are consistent across patients or attributable to cases that were extreme in terms of charges, length of stay, or both. Lastly, we consider the number of patients who will have a given set of characteristics and generally prefer not to create a new MS-DRG unless it would include a substantial number of cases.

In response to the commenter's comparison of how TDR procedures differ from other procedures in MS-DRG 490, we point out that procedure code 84.58 (Implantation of interspinous process decompression device), which previously identified the X-Stop device, was deleted effective October 1, 2007 (FY 2008). In addition, the other spinal disc devices that were noted by the commenter (Coflex, Dynesys, and M-Brace) were reassigned from procedure code 84.59 (Insertion of other spinal devices) to unique codes that were created in response to industry requests to describe a newer category of devices identified as motion preserving technologies. This new procedure code category, 84.8 (Insertion, replacement and revision of posterior spinal motion preservation device(s)), also became effective as of October 1, 2007 (FY 2008). As discussed above, the commenter recommended that CMS conduct a more recent and thorough evaluation of the spinal procedures in MS-DRG 490. However, in its own submitted comments, the commenter referred to outdated, deleted codes for its comparison to TDR.

With regard to clinical homogeneity and resource utilization, spinal fusion, TDR and a subset of the motion preserving technologies utilizing implant devices that allow motion in the spinal column were discussed extensively as noted above in the FY 2008 IPPS proposed rule and final rule with comment period (72 FR 24731 through 24735 and 47226 through 47232), respectively.

We will continue to evaluate the MS-DRGs on an annual basis and to respond to requests for code reassignments and MS-DRG reclassifications. We performed an analysis of the cervical and lumbar artificial disc replacement procedures in comparison to the fusion MS-DRGs in response to the commenter's request, as described above. Our data did not support reassignment of the artificial disc replacement codes, nor did our clinical advisors agree that these procedures are clinically coherent to be grouped in the same MS-DRGs. In addition, the data did not support the creation of a new, separate MS-DRG for total disc replacement procedures.

As mentioned previously, we performed a comprehensive analysis of all the spinal DRGs in our FY 2008 rulemaking process and we recognized the costs of procedures involving insertion of a disc device. As a result, we modified MS-DRG 490 (the higher severity level) to include those procedures with disc devices. The data analysis conducted at that time supported that modification.

We will continue to monitor the resource utilization of procedure codes 84.62 and 84.65 to determine if future MS-DRG reassignments are warranted.

After consideration of the public comments we received, we are finalizing our proposal to not create a new, separate MS-DRG for cervical or lumbar total disc replacement procedures and to not reassign procedure code 84.62 from MS-DRG 490 to MS-DRGs 471 through 473 and procedure code 84.65 from MS-DRG 490 to MS-DRGs 459 and 460 for FY 2012.

b. Major Joint Replacement or Reattachment of Lower Extremities

We received a request to add an additional severity level for MS-DRG 469 (Major Joint Replacement or Reattachment of Lower Extremity with MCC) and MS-DRG 470 Major Joint Replacement or Reattachment of Lower Extremity without MCC). For the FY 2012 IPPS/LTCH PPS proposed rule, we examined FY 2010 MedPAR claims data to determine if we could subdivide the base MS-DRG into three severity levels: with MCC, with CC, and without CC/MCC. We applied the criteria used in the development of the MS-DRGs included in the FY 2008 IPPS final rule with comment period (72 FR 47169). We refer readers to this final rule with comment period for a complete description of these criteria. As discussed earlier, the original criteria were based on average charges. However, subsequent to the FY 2007 IPPS final rule (71 FR 47882), we now use average costs. The five criteria using costs are listed below. In order to warrant creation of a CC or an MCC subgroup within a base MS-DRG, the subgroup must meet all of the following five criteria:

  • A reduction in variance of costs of at least 3 percent.
  • At least 5 percent of the patients in the MS-DRG fall within the CC or MCC subgroup.
  • At least 500 cases are in the CC or MCC subgroup.
  • There is at least a 20-percent difference in average costs between subgroups.
  • There is a $2,000 difference in average costs between subgroups

The following table shows our determination of the number of cases and average costs by MCC, CC, and non-CC levels.

MS-DRGs 469 and 470Number of casesAverage length of stayAverage costs
Cases with MCC25,7177.72$21,016
Start Printed Page 51534
Cases with CC179,1163.9914,233
Cases without CC/MCC220,7393.2113,250
Total425,5723.814,133

We determined that these cases do not meet our five criteria for adding a new severity level. The cases failed to meet criterion four (requiring at least a 20-percent difference in average costs between subgroups) and criterion five (requiring a $2,000 difference in average costs between subgroups). Therefore, we did not propose the addition of a new severity level for the base MS-DRG. Instead, we proposed to maintain the two existing severity levels for MS-DRGs 469 and 470. We welcomed public comments on our proposal not to add an additional severity level to MS-DRGs 469 and 470.

Comment: Several commenters supported our proposal to maintain the two existing severity levels for MS-DRGs 469 and 470 and not to add a third severity level. The commenters stated that the proposal seemed reasonable, given the data and information provided.

One commenter opposed our proposal. The commenter acknowledged the five criteria used to evaluate the establishment of a new severity level and the fact that this set of MS-DRGs did not meet the criterion requiring at least a 20-percent difference in average costs between subgroups or the criterion requiring a $2,000 difference in average costs between subgroups. However, the commenter stated that the large number of “with CC” cases that are currently classified in the “without CC/MCC” group places an unfair burden on providers who treat these patients and presents a distorted picture of the actual severity level of cases assigned to those providers. The commenter believed that adding an additional severity level to MS-DRGs 469 and 470 would better identify those conditions that lead to higher severity of illness and resource use relative to the average Medicare patient.

Another commenter opposed our proposal of maintaining the current two severity levels. The commenter stated that while the data appear to show that there is not a significant average cost difference between cases without CC/MCC compared to cases with CC, the commenter believed the data are biased. The commenter believed that diagnoses that do not affect DRG assignment are less likely to be reported on claims. The commenter speculated that it was reasonable to assume that, for cases assigned to these MS-DRGs, complications and comorbidities are underreported, as hospitals know that coding complications and comorbidities do not result in higher reimbursement. The commenter stated that a more reasonable approach would be to establish a third severity level for major joint replacement, with the intent of analyzing the data over the next 2 years to determine whether this was an appropriate MS-DRG modification. The commenter stated that the fact that “Revision of a Hip or Knee Replacement” has three levels strongly suggests that three levels would be appropriate for major joint replacement also.

Response: We agree with the commenters' statements that the data analysis shows that two of the five established criteria for creating a new severity level were not met. The cases failed to meet criterion two requiring at least a 20-percent difference in average costs between subgroups and criterion five requiring a $2,000 difference in average costs between subgroups. The criteria were developed to evaluate the need for severity levels across all MS-DRGs. We applied the criteria used in the development of the MS-DRGs included in the FY 2008 IPPS final rule with comment period (72 FR 47169). We refer readers to that final rule with comment period for a complete description of these criteria. As discussed earlier, the original criteria were based on average charges. However, subsequent to the FY 2007 IPPS final rule (71 FR 47882), we now use average costs. We believe it is important to apply these criteria consistently as requests are evaluated to create new severity levels. The cases in MS-DRGs 469 and 470 failed to meet the five criteria for adding a new severity level. We agree with the commenters who supported our proposal to maintain the two existing severity levels for MS-DRGs 469 and 470 and not creating a third severity level.

We disagree with the commenters who stated that CMS should ignore the criteria and add the additional severity level. One commenter suggested that we could retroactively review this new severity level by examining claims data 2 years after the update is made. We believe it is inappropriate to make an exception to the severity level criteria based on an assumption that hospitals may be under reporting secondary diagnoses that are on the CC list for certain types of cases. We encourage hospitals to code and report accurately. We will continue to review data to determine if additional severity levels are needed for specific MS-DRGs based on our published criteria. We do not believe it is appropriate to make exceptions for certain MS-DRGs.

After consideration of the public comments we received, as we proposed, we are maintaining MS-DRGs 469 and 470 with the current two severity levels for FY 2012.

c. Combined Anterior/Posterior Spinal Fusion

A manufacturer requested that CMS reassign spinal fusion cases utilizing the AxiaLIF technology from MS-DRGs 459 and 460 (Spinal Fusion Except Cervical with MCC and without MCC, respectively) to MS-DRGs 453, 454, and 455 (Combined Anterior/Posterior Spinal Fusion with MCC, with CC, and without CC/MCC, respectively). The commenter stated that an anterior lumbar interbody spinal fusion performed with a lateral approach, the extreme lateral interbody fusion (XLIF®), with posterior spinal fixation, can report two codes resulting in assignment to the combined fusion MS-DRGs. The commenter also stated that the AxiaLIF technology, which is also utilized in an anterior lumbar interbody spinal fusion and uses a pre-sacral approach, can only report one code, resulting in assignment to the single fusion MS-DRGs. The commenter expressed concern that the payment incentives are not properly aligned for the recently available minimally invasive spinal fusion technologies. The commenter compared the XLIF® to the AxiaLIF and urged CMS to consider the AxiaLIF technology similar to the XLIF® for purposes of MS-DRG assignment.

Spinal fusion is a surgical procedure that joins two or more vertebrae by the use of bone graft (or bone graft substitute), with the goal of maintaining Start Printed Page 51535alignment, providing stability, decreasing pain, and restoring the function of the spinal nerves. Routinely, a spinal fusion also utilizes internal fixation devices (instrumentation) to assist in stabilizing the spine. These fixation devices may include pedicle screws, cages, rods, or plates. Effective October 1, 2010, ICD-9-CM procedure code 81.06 (Lumbar and lumbosacral fusion of the anterior column, anterior technique) describes the XLIF® procedure, and code 81.08 (Lumbar and lumbosacral fusion of the anterior column, posterior technique) describes the AxiaLIF technology.

The spinal fusion codes and their corresponding MS-DRG assignment include the use of bone graft and internal fixation. The requestor's comment regarding the assignment of one procedure code for one technology versus assigning two procedure codes for another technology indicates that the commenter may not fully understand the MS-DRG GROUPER logic for spinal fusions. For example, if an anterior lumbar interbody fusion is performed and posterior spinal fixation (or instrumentation) is also utilized, this requires one code and results in a single fusion MS-DRG assignment. However, if a posterior spinal fusion (procedure code 81.07 (Lumbar and lumbosacral fusion of the posterior column, posterior technique) was performed in addition to an anterior fusion, for example, the XLIF® procedure (procedure code 81.06), that scenario would necessitate the assignment of both codes, resulting in assignment to the combined spinal fusion MS-DRGs (453, 454, or 455). MS-DRGs 453, 454, and 455 were created to capture patients who have both an anterior and posterior fusion. We believe the requestor may have confused the terms “fixation” and “fusion” for MS-DRG assignment in its request.

For the FY 2012 IPPS/LTCH PPS proposed rule, we analyzed the FY 2010 MedPAR data to evaluate claims reporting procedure codes 81.06, 81.07, and 81.08 in MS-DRGs 456 through 458 (Spinal Fusion Except Cervical with Spinal Curvature/Malignancy/Infection or 9+ Fusions with MCC, with CC and without CC/MCC, respectively) and MS-DRGs 459 and 460. We found a total of 1,115 cases in MS-DRG 456, with an average length of stay of 13.14 days and average costs of $63,856. We found 278 cases reporting procedure code 81.08, with an average length of stay of 12.04 days and average costs of $56,585. Similar results can be seen for procedure code 81.08 in the remaining MS-DRGs as shown in the chart below in terms of volume, length of stay, and average cost. Clearly, the data demonstrate that the AxiaLIF technology (procedure code 81.08) is appropriately assigned to its current MS-DRG assignments, as is the XLIF® procedure (procedure code 81.06).

MS-DRGNumber of casesAverage length of stayAverage costs
MS-DRG 456—All cases1,11513.14$63,856
MS-DRG 456—Cases with code 81.065414.3752,392
MS-DRG 456—Cases with code 81.072212.3246,828
MS-DRG 456—Cases with code 81.0827812.0456,585
MS-DRG 457—All cases3,0796.7441,500
MS-DRG 457—Cases with code 81.061196.4236,468
MS-DRG 457—Cases with code 81.07986.4936,532
MS-DRG 457—Cases with code 81.081,1945.7335,272
MS-DRG 458—All cases1,3893.9132,946
MS-DRG 458—Cases with code 81.061153.4929,089
MS-DRG 458—Cases with code 81.07763.1630,551
MS-DRG 458—Cases with code 81.088273.6030,570
MS-DRG 459—All cases3,6508.9240,218
MS-DRG 459—Cases with code 81.061649.1240,150
MS-DRG 459—Cases with code 81.071658.6537,970
MS-DRG 459—Cases with code 81.082,4688.2538,010
MS-DRG 460—All cases60,8653.7525,268
MS-DRG 460—Cases with code 81.062,6813.2726,464
MS-DRG 460—Cases with code 81.073,7093.6723,334
MS-DRG 460—Cases with code 81.0846,5653.6624,571

We also analyzed data for combinations of the spinal fusion codes that result in assignment to MS-DRGs 453, 454, and 455. We evaluated the following combinations:

  • 81.06 (Lumbar and lumbosacral fusion of the anterior column, anterior technique) and 81.07 (Lumbar and lumbosacral fusion of the posterior column, posterior technique).
  • 81.06 (Lumbar and lumbosacral fusion of the anterior column, anterior technique) and 81.08 (Lumbar and lumbosacral fusion of the anterior column, posterior technique).

We further analyzed data with the following combination of spinal fusion codes in MS-DRGs 456, 457, and 458 and MS-DRGs 459 and 460:

  • 81.07 (Lumbar and lumbosacral fusion of the posterior column, posterior technique) and 81.08 (Lumbar and lumbosacral fusion of the anterior column, posterior technique).

The chart below shows the results of the data analysis for the combination of procedure codes listed above where an anterior and posterior spinal fusion was performed in the same episode of care. There were a total of 1,190 cases in MS-DRG 453, with an average length of stay of 13.08 days and average costs of $71,693. The cases reporting the combination of procedure codes 81.06 and 81.08 in this same MS-DRG totaled 431, with an average length of stay of 11.59 days and average costs of $69,859. Results for the procedure code combination (81.06 and 81.08) in MS-DRGs 454 and 455 with regard to volume of cases, length of stay, and average costs data also support that these spinal fusion procedure code combinations are appropriately placed in their current MS-DRG assignments. Likewise, for MS-DRGs 456, 457, and 458, the data support that the spinal fusion procedure code combinations of 81.07 and 81.08 are appropriately placed in their current MS-DRG assignments. There were a total of 1,115 cases in MS-DRG 456 with an average length of stay of 13.14 days and average Start Printed Page 51536costs of $68,856. The cases reporting the combination of procedure codes 81.07 and 81.08 in this same MS-DRG totaled 54, with an average length of stay of 14.37 days and average costs of $52,392. Results for the procedure code combination (81.07 and 81.08) in MS-DRGs 457 and 458 with regard to volume of cases and average length of stay were lower compared to all the cases in those two MS-DRGs. While the data show higher average costs for the procedure code combination of 81.07 and 81.08 in MS-DRGs 457 and 458, as stated previously, the volume was extremely low.

MS-DRGNumber of casesAverage length of stayAverage costs
MS-DRG 453—All cases1,19013.08$71,693
MS-DRG 453—Cases with codes 81.06 and 81.07814.00109,089
MS-DRG 453—Cases with codes 81.06 and 81.0843111.5969,859
MS-DRG 454—All cases3,0526.3848,311
MS-DRG 454—Cases with codes 81.06 and 81.07476.8360,743
MS-DRG 454—Cases with codes 81.06 and 81.081,8255.7147,144
MS-DRG 455—All cases2,7473.6337,378
MS-DRG 455—Cases with codes 81.06 and 81.07404.2847,794
MS-DRG 455—Cases with codes 81.06 and 81.082,0533.4337,793
MS-DRG 456—All cases1,11513.1463,856
MS-DRG 456—Cases with codes 81.07 and 81.085414.3752,392
MS-DRG 457—All cases3,0796.7441,500
MS-DRG 457—Cases with codes 81.07 and 81.08295.9760,820
MS-DRG 458—All cases1,3893.9132,946
MS-DRG 458—Cases with code 81.07 and 81.08233.2251,942

As the focus of the analysis was to evaluate procedure code 81.08 in comparison to procedure code 81.06, we believe the AxiaLIF technology (procedure code 81.08) is grouped appropriately in its current MS-DRG assignments, as is the XLIF® procedure (procedure code 81.06). The volume, length of stay, and cost data analyzed demonstrate that the complexity of services and resources utilized for each of these technologies are properly accounted for in their respective MS-DRG assignments. Therefore, the data did not support making changes for procedure code 81.08. As a result, we did not propose to reassign cases reporting this procedure code to the combined fusion MS-DRGs. We invited public comment on our proposal to not reassign procedure code 81.08 from MS-DRGs 456 through 460 to MS-DRGs 453 through 455 for FY 2012.

Comment: Several commenters supported our proposal to not reassign procedure code 81.08 to MS-DRGs 453 through 455.

Response: We appreciate the commenters' support.

After consideration of the public comments we received, we are finalizing our proposal to not reassign procedure code 81.08 to MS-DRGs 453 through 455.

6. MDC 9 (Diseases and Disorders of the Skin, Subcutaneous Tissue, and Breast): Excisional Debridement of Wound, Infection, or Burn

We received a request that we remove procedure code 86.22 (Excisional debridement of wound, infection, or burn) from the list of codes considered to be O.R. procedures. The commenter stated that many inpatient excisional debridements are performed in a patient's room instead of in an operating room. The commenter believed that the original assignment of procedure code 86.22 to the O.R. list served to help reflect the resource intensity required by a patient with wounds and ulcers that required an excisional debridement. The commenter stated that, by doing so, the code served as a proxy for severity of illness in the original CMS DRGs prior to the implementation of MS-DRGs in FY 2008. The commenter stated that the creation of the most serious pressure ulcer codes for stage 3 and stage 4 pressure ulcers (codes 707.23 and 707.24) allows these conditions to be classified as MCCs. Therefore, the commenter stated that the need to use procedure code 86.22 to capture severity of illness was no longer needed. The commenter also stated that procedure code 86.22 is a non-O.R. code under the APR-DRGs and does not affect the DRG assignment. The commenter requested that procedure code 86.22 be changed from an O.R. procedure code to a non-O.R. procedure code.

As the commenter stated, excisional debridements are currently captured in procedure code 86.22. Procedure code 88.22 is classified as an O.R. procedure in the current MS-DRGs and, therefore, leads to a surgical MS-DRG assignment. We examined MedPAR claims data on all excisional debridement cases and found that these debridement cases use appreciably fewer resources than other cases in their current surgical DRGs. However, for the proposed rule, we determined that if we were to classify debridement cases as non-O.R. cases and assign them to medical DRGs, we would significantly underpay these cases. The following chart shows differences in average costs for all excisional debridement cases compared to other cases within their current MS-DRG and compared to medical DRGs to which the patients would be assigned if the procedure were reclassified as a non-O.R. procedure.

Procedure codeAll cases with no other OR procedureAverage cost (A)Average costs in surgical DRGs to which the patients are assigned (B)Average costs in medical DRGs to which the patients would be assigned (C)
86.2232,152$12,427$17,332$8,070
Start Printed Page 51537

The chart illustrates that when debridement is the only O.R. procedure, it is assigned to MS-DRGs that have an average cost that is approximately $5,000 more than the actual cost of the debridement ($12,427 versus $17,332). Conversely, if the debridement is made a non-O.R. code, it would, on average, be assigned to MS-DRGs that have an average cost that is approximately $4,000 less than the actual cost of the debridement ($8,070 versus $12,427). Therefore, we believe it would be inappropriate to propose to classify these procedures as a non-O.R. procedure.

For the proposed rule, we explored alternative approaches to classifying procedure code 86.22 as a non-O.R. procedure. We evaluated the possibility of removing excisional debridements from their current MS-DRG assignments within the following skin-related MS-DRGs, where they are combined with skin grafts, and creating a new set of debridement MS-DRGs. The current MS-DRGs that combine skin grafts and debridements into the same MS-DRGs are as follows:

  • MS-DRGs 573 through 575 (Skin Graft &/or Debridement for Skin Ulcer or Cellulitis with MCC, with CC, and without CC/MCC, respectively).
  • MS-DRGs 576 through 578 (Skin Graft &/or Debridement Except for Skin Ulcer or Cellulitis with MCC, with CC, and without CC/MCC, respectively).

We analyzed MedPAR claims data on the severity level of graft cases without any debridements in these six MS-DRGs. Our findings are shown in the chart below.

Skin Grafts Without Debridements

MS-DRGNumber of casesAverage length of stayAverage costs
MS-DRGs 573-575—Cases with severity level of MCC75114.56$23,975
MS-DRGs 573-575—Cases with severity level of CC1,72010.1614.869
MS-DRGs 573-575—Cases with severity level of without CC/MCC5405.368,469
MS-DRGs 576-578—Cases with severity level of MCC33510.2822,996
MS-DRGs 576-578—Cases with severity level of CC1,4825.2811,299
MS-DRGs 576-578—Cases with severity level of without CC/MCC1,8493.016,986

We compared these data to a proposed new set of skin-related MS-DRGs that would include only debridements. The results of the findings of the severity levels of debridements without skin grafts in these six MS-DRGs are shown in the chart below.

Debridements Without Skin Grafts

MS-DRGNumber of casesAverage length of stayAverage costs
MS-DRG 573-575—Cases with severity level of MCC3,17711.73$18,381
MS-DRG 573-575—Cases with severity level of CC6,6497.6710,730
MS-DRG 573-575—Cases with severity level of without CC/MCC2,5554.946,372
MS-DRG 576-578—Cases with severity level of MCC27111.5919,429
MS-DRG 576-578—Cases with severity level of CC6387.6111,913
MS-DRG 576-578—Cases with severity level of without CC/MCC2854.456,928

Our findings indicate that the graft procedure cases have higher average costs than the excisional debridement cases. The average costs for the excisional debridement cases in MS-DRGs 573 through 575 compared to the debridement cases in MS-DRGs 576 through 578 are very similar. We believe that the data support creating a single set of skin-related excisional debridement MS-DRGs composed of cases previously captured in MS-DRGs 573 through 575 as well as MS-DRGs 576 through 578. The following chart illustrates those combined average costs.

Excisional Debridements From Ms-Drgs 573 Through 578 Split on Severity Level

MS-DRGs 573—578Number of casesAverage length of stayAverage costs
Combined Excisional Debridement Cases with Severity Level of MCC3,44811.71$18,463
Combined Excisional Debridement Cases with Severity Level of CC7,2877.7610,833
Combined Excisional Debridement Cases with Severity Level of without CC/MCC2,8404.896,428

As we stated in the proposed rule, we believe that the data support separating skin graft procedures from excisional debridements by creating a new set of MS-DRGs. This would result in more accurate payment for both skin grafts and debridement. Therefore, we proposed to remove excisional debridements (procedure code 86.22) from their current MS-DRG assignments within MS-DRGs 573 through 578 for skin grafts and assign them to new excisional debridement MS-DRGs. We proposed to maintain MS-DRGs 573 through 578 for skin grafts. The following list describes the proposed new and revised MS-DRG titles:Start Printed Page 51538

Proposed new MS-DRGs based on procedure code 86.22:

  • Proposed MS-DRG 570 (Skin Debridement with MCC)
  • Proposed MS-DRG 571 (Skin debridement with CC)
  • Proposed MS-DRG 572 (Skin Debridement without CC/MCC)

Proposed Revised MS-DRGs based on codes currently assigned to MS-DRGs 573 through 578, excluding procedure code 86.22:

  • Proposed revised MS-DRG 573 (Skin Graft for Skin Ulcer or Cellulitis with MCC)
  • Proposed revised MS-DRG 574 (Skin Graft for Skin Ulcer or Cellulitis with CC)
  • Proposed revised MS-DRG 575 (Skin Graft for Skin Ulcer or Cellulitis without CC/MCC)
  • Proposed revised MS-DRG 576 (Skin Graft Except for Skin Ulcer or Cellulitis with MCC)
  • Proposed revised MS-DRG 577 (Skin Graft except for Skin Ulcer or Cellulitis with CC)
  • Proposed revised MS-DRG 578 (Skin Graft Except for Skin Ulcer or Cellulitis without CC/MCC)

In the proposed rule, we invited public comments on our proposal for FY 2012 to create three new debridement MS-DRGs 570, 571, and 572 for skin debridement and to revise MS-DRGs 573 through 578 to include skin grafts only, as indicated above.

Comment: Several commenters supported our proposal to create three new debridement MS-DRGs, MS-DRGs 570, 571, and 572 for skin debridement and to revise MS-DRGs 573 through 578 to include skin grafts only, as described above. One commenter stated that the proposal seemed reasonable, given the data and the information provided. Another commenter who supported this MS-DRG modification expressed appreciation for the change because the relative weights better reflect resource intensive cases with the proposed new and revised MS-DRGs 570 through 578.

One commenter supported our recommendation not to remove the code for excisional debridement from the O.R. list. However, the commenter opposed removing excisional debridements (procedure code 86.22) from their current MS-DRG assignments within MS-DRGs 573 through 578 for skin grafts and assigning them to new excisional debridement MS-DRGs and maintaining MS-DRGs 573 through 578 for skin grafts. The commenter stated that excisional debridement is not exclusively a bedside procedure. Rather, the commenter noted, it can be performed in or out of the operation room, based on the judgment of the surgeon. The commenter stated that, in many instances, this procedure cannot be performed at the bedside due to variables such as patient anxiety, the size of the wound, bleeding risk, among others. The commenter stated that removing excisional debridements from their current MS-DRG assignments could harm many hospitals that perform procedures such as split thickness skin grafts for extensive wound or burns. The commenter recommended that, instead of removing excisional debridements from the current MS-DRG assignments, CMS create a separate ICD-9-CM code for debridement that is performed in the operating room due to anesthesia, equipment, or monitoring requirements.

Another commenter opposed the creation of separate debridement and skin graft MS-DRGs out of concern that this would create significant confusion among hospital coders. The commenter stated that skin grafts and skin debridements are often performed on the same patient. The commenter stated that the current descriptions of MS-DRGs 573 through 575 (Skin Graft and/or Debridement for Skin Ulcer or Cellulitis with MCC, with CC, and without CC/MCC, respectively) and MS-DRGs 576 through 578 (Skin Graft and/or Debridement Except for Skin Ulcer or Cellulitis with MCC, with CC, and without CC/MCC, respectively) appropriately describe the interrelationship between skin grafts and debridement. The commenter expressed concern that de-linking this relationship would lead to confusion for coders.

Response: We agree with the commenters that data support the creation of three new debridement MS-DRGs 570, 571, and 572 for skin debridement and the revision of MS-DRGs 573 through 578 to include skin grafts only.

We disagree with the commenter who recommends that, instead of creating separate MS-DRGs for skin debridements and skin grafts, CMS pursue the creation of a new skin debridement code that would be limited to those procedures performed in an operating room setting. ICD-9-CM codes are not currently subdivided based on the location of the procedure such as in an operating room, endoscopy room, catheterization room, treatment room, or patient room. ICD-9-CM codes are assigned based on the procedure performed, not the location in which the procedure was performed. Furthermore, we have just begun a period of a partial freeze of both ICD-9-CM and ICD-10 codes. This partial freeze is discussed in section II.G.13.b. of this preamble. We do not believe it is appropriate to postpone refinements to the MS-DRGs until a code update could be made and data on cases reported with the new code could be evaluated. We believe the current data support this proposed modification. However, as stated earlier, ICD-9-CM codes do not indicate the setting in which a procedure is performed. Therefore, it is unlikely that such a code would be created even if we were not in a period of a code freeze.

We also disagree with the commenter who stated that creating separate MS-DRGs for skin debridements and skin grafts will create confusion for coders. We believe that coders clearly understand the difference between skin debridements and skin grafts. If both are performed, then coders code and report both procedures. The fact that the MS-DRGs would be modified would not affect the way in which coders assign codes for skin debridements and skin grafts. We also note that organizations representing coders, including the American Health Information Management Association, supported this proposed MS-DRG modification. These organizations did not express concerns about any possible confusion for coders.

After consideration of the public comments we received, we are finalizing our proposal to create the following new and revised MS-DRGs:

New MS-DRGs based on procedure code 86.22:

  • MS-DRG 570 (Skin Debridement with MCC)
  • MS-DRG 571 (Skin debridement with CC)
  • MS-DRG 572 (Skin Debridement without CC/MCC)

Revised MS-DRGs based on codes currently assigned to MS-DRGs 573 through 578, excluding procedure code 86.22:

  • Revised MS-DRG 573 (Skin Graft for Skin Ulcer or Cellulitis with MCC)
  • Revised MS-DRG 574 (Skin Graft for Skin Ulcer or Cellulitis with CC)
  • Revised MS-DRG 575 (Skin Graft for Skin Ulcer or Cellulitis without CC/MCC)
  • Revised MS-DRG 576 (Skin Graft Except for Skin Ulcer or Cellulitis with MCC)
  • Revised MS-DRG 577 (Skin Graft except for Skin Ulcer or Cellulitis with CC)
  • Revised MS-DRG 578 (Skin Graft Except for Skin Ulcer or Cellulitis without CC/MCC)Start Printed Page 51539

7. MDC 10 (Endocrine, Nutritional, and Metabolic Diseases and Disorders)

a. Nutritional and Metabolic Diseases: Update of MS-DRG Titles

We received a request to revise the MS-DRG titles for MS-DRGs 640 through 642 to more clearly capture the cases that are currently assigned to these MS-DRGs. The current titles for these MS-DRGs are: MS-DRGs 640 (Nutritional & Miscellaneous Metabolic Disorders with MCC); MS-DRG 641 (Nutritional & Miscellaneous Metabolic Disorders without MCC); and MS-DRG 642 (Inborn Errors of Metabolism). The requestor suggested that we change the titles to: MS-DRG 640 (Miscellaneous Disorders of Nutrition, Metabolism, and Fluids and Electrolytes with MCC); MS-DRG 641 (Miscellaneous Disorders of Nutrition, Metabolism, and Fluids and Electrolytes without MCC); and MS-DRG 642 (Inborn and Other Disorders of Metabolism).

Our clinical advisors supported these suggested changes to the titles, as the suggested changes would provide a better description of the diagnoses assigned to MS-DRGs 640, 641, and 642. Therefore, in the FY 2012 IPPS/LTCH PPS proposed rule, we proposed to revise the MS-DRG titles for MS-DRGs 640, 641, and 642 as the requestor suggested. We invited public comment on our proposal to change the MS-DRG titles for MS-DRGs 640, 641, and 642 for FY 2012.

Comment: Several commenters supported our proposed changes to the titles of MS-DRGs 640 through 642 to better reflect the cases that are assigned to these MS-DRGs.

Response: We appreciate the commenters' support.

After consideration of the public comments we received, we are finalizing our proposal to change the titles for MS-DRGs 640 through 642. The final tiles are as follows:

  • MS-DRG 640 (Miscellaneous Disorders of Nutrition, Metabolism, and Fluids and Electrolytes with MCC)
  • MS-DRG 641 (Miscellaneous Disorders of Nutrition, Metabolism, and Fluids and Electrolytes without MCC)
  • MS-DRG 642 (Inborn and Other Disorders of Metabolism).

b. Sleeve Gastrectomy Procedure for Morbid Obesity

Sleeve gastrectomy is a 70 percent to 80 percent greater curvature gastrectomy (sleeve resection of the stomach) with continuity of the gastric lesser curve being maintained while simultaneously reducing stomach volume. It may be the first step in a two-stage procedure when performing Roux-en-Y Gastric Bypass (RYGBP). Sleeve gastrectomy, whether open or laparoscopic, is currently coded using ICD-9-CM procedure code 43.89 (Other total gastrectomy). Procedure code 43.89 is currently assigned to several MS-DRGs. However, the code is not assigned to MS-DRG 619, 620, or 621 (O.R. Procedures for Obesity with MCC, with CC, and without CC/MCC, respectively).

We received a request for CMS to review MDC 10 (Endocrine, Nutritional, and Metabolic Diseases and Disorders) for consistency. Specifically, the requestor questioned why diagnosis code 278.01 (Morbid obesity), when paired on a claim with procedure code 43.89, would be assigned to MS-DRG 981, 982, or 983 (Extensive O.R. Procedure Unrelated to Principal Diagnosis with MCC, with CC, or without CC/MCC, respectively) instead of MS-DRG 619, 620, or 621.

Upon review for the FY 2012 IPPS/LTCH PPS proposed rule, we determined that diagnosis code 278.01 is assigned to MDC 10. However, procedure code 43.89 is not assigned to any MS-DRG set in this MDC. Therefore, the cases are assigned to MS-DRGs 981 through 983, reflecting procedures not related to the principal diagnosis. This was an inadvertent oversight on CMS' part when the MS-DRGs were created. Therefore, we proposed to add a procedure code or codes identifying sleeve gastrectomy to MS-DRGs 619 through 621 for FY 2012.

Currently, sleeve gastrectomy is identified in the ICD-9-CM procedure code Index as follows: Gastrectomy (partial) (subtotal) NEC 43.89. At procedure code 43.89 in the ICD-9-CM procedure code Tabular, an inclusion note identifies this code as including sleeve resection of the stomach.

In our proposal to add a procedure code or codes to MS-DRGs 619 through 621, we pointed out that there is an NCD that has precluded coverage of sleeve gastrectomy when performed either open or laparoscopically. This decision may be found in the Medicare National Coverage Determination Manual, Section 100.1, Nationally Noncovered Indications for Bariatric Surgery for Treatment of Morbid Obesity, effective on February 12, 2009. This manual is available on the CMS Web site through a link at: http://www.cms.gov/​manuals/​downloads/​mcd103c1_​Part2.pdf. This manual entry affirms that treatment for obesity via use of the open or laparoscopic sleeve gastrectomy is determined to be noncovered for Medicare beneficiaries.

Noncoverage of these cases is determined by our Medicare contractors, the fiscal intermediary or A-B/MAC, because of the nature of procedure code 43.89, which is a code that identifies several gastrectomy procedures. To identify a code in the MCE that describes many procedures would inappropriately restrict other procedures which are also described by that code, but which are covered. We received a request to create specific codes uniquely identifying both laparoscopic sleeve gastrectomy and the open procedure, vertical sleeve gastrectomy. We addressed this request at the ICD-9-CM Coordination and Maintenance Committee meeting held on March 9, 2011.

We had stated that should a code or codes be created as a result of this request, we would then be able to add this code or codes to the MCE as a conforming noncoverage edit when combined with diagnosis code 278.01. The background information discussing sleeve gastrectomy coding can be accessed on the CMS Web site at: http://www.cms.gov/​ICD9ProviderDiagnosticcodes/​03_​meetings.asp#TopOfPage. A summary of the meeting can be found on CMS' Web site for the ICD-9-CM Coordination and Maintenance Committee at: http://www.cms.gov/​ICD9ProviderDiagnosticCodes/​03_​meetings.asp#TopOfPage by scrolling down to the .pdf zip files containing the meeting agenda and handouts.

Therefore, for FY 2012, we proposed to add a procedure code or codes identifying sleeve gastrectomy to MS-DRGs 619 through 621. However, we also indicated that we intended to add any code or codes created at the ICD-9-CM Coordination and Maintenance Committee on March 9, 2011, to the MCE because sleeve gastrectomy, whether open or laparoscopic, is not covered for Medicare beneficiaries. The code or codes would appear in the “Noncovered Procedures” edit of the MCE. As the timing of the development of the proposed rule and the date of the March 2011 meeting of the ICD-9-CM Coordination and Maintenance Committee overlapped, we could not determine if additional sleeve gastrectomy codes would be created, to what code number or numbers they would be assigned, or how the narrative describing them would read. However, we indicated that should a code or codes be created, we proposed that they would simultaneously be placed in both MS-DRGs 619 through 621 and the MCE. This decision may seem to be counterintuitive, but CMS realizes that Start Printed Page 51540our MS-DRGs and the Medicare GROUPER program are used for other beneficiaries and by other insurance plans rather than strictly for Medicare beneficiaries. Any new code or codes created as a result of the ICD-9-CM Coordination and Maintenance Committee meeting are included in Table 6B (which is listed in section VI. of the Addendum to this final rule and available via the Internet at http://www.cms.gov/​ICD9ProviderDiagnosticCodes/​04_​addendum.asp#TopOfPage); we indicated that we did not have a mechanism to make the codes from the March 9, 2011 meeting available in the proposed rule prior to the final rule's publication.

As a result of the March 9, 2011 ICD-9-CM Coordination and Maintenance Committee Meeting, one code was created: Procedure code 43.82 (Laparoscopic vertical (sleeve) gastrectomy). To address open gastrectomies, the title of existing code 43.89 was revised to read “Open and other partial gastrectomy”. Both codes can be found in Table 6B (New Procedure Codes) and Table 6F (Revised Procedure Code Titles), which are listed in the Addendum to this final rule and available via the Internet on the CMS Web site.

Comment: Several commenters addressed both the creation of a code or codes for laparoscopic or open sleeve gastrectomy discussed above and the proposed changes to the MCE. Several commenters indicated that they had no objections to the proposed changes to the MS-DRG classifications and the MCE, stating that the proposed changes seemed reasonable, given the data and information provided. One commenter specifically requested that CMS finalize its proposal to add new procedure code 43.82 to the MCE as a noncovered procedure.

Response: We appreciate the commenters' support of our proposal.

Comment: One commenter stated that they understood that procedure code 43.89 was inadvertently omitted from MS-DRGs 619, 620, and 621 when the MS-DRGs were created and supported the addition of this code to these MS-DRGs. In addition, this commenter stated that because procedure code 43.89 is not specific to open sleeve gastrectomy, it cannot be incorporated as a “noncovered procedure” in the MCE.

Response: We appreciate the commenter's support for this proposal and agree that procedure code 43.89 includes several gastrectomy procedures. Therefore, to identify a code describing many procedures in an MCE edit would inappropriately restrict other procedures included in that code that are covered.

After consideration of the public comments we received, we are adopting as final our proposal to assign both the new procedure code 43.82 (Laparoscopic vertical (sleeve) gastrectomy) and the existing procedure code 43.89 (Other total gastrectomy) to MS-DRGs 619, 620, and 621 (O.R. Procedures for Obesity with MCC, with CC, and without CC/MCC, respectively). In addition, we are adding procedure code 43.82 to the “Noncovered Procedures” edit of the MCE because laparoscopic sleeve gastrectomy is not covered for Medicare beneficiaries. Because procedure code 43.89 includes several gastrectomy procedures, its inclusion in the MCE would be inappropriate. Therefore, it will not be placed on the MCE.

8. MDC 15 (Newborns and Other Neonates With Conditions Originating in the Perinatal Period): Discharge Status Code 66 (Discharged/Transferred to Critical Assess Hospital (CAH))

In the FY 2011 IPPS/LTCH PPS final rule (75 FR 50236), we finalized our transfer policy regarding transfer of patients from an acute care hospital to a CAH. In that final rule, we stated that hospitals are required to use patient discharge status code 66 on the IPPS claims to identify transfers to CAHs.

With this new requirement, a discharge from an IPPS hospital to a CAH equates to a transfer status. However, discharge status code 66 is currently not included in the MS-DRG GROUPER logic for MS-DRG 789 (Neonate, Died or Transferred to Another Acute Care Facility). Therefore, in the FY 2012 IPPS/LTCH PPS proposed rule, we proposed to add discharge status code 66 to the MS-DRG GROUPER logic for MS-DRG 789. We invited public comment on our proposal to add discharge status code 66 to the MS-DRG GROUPER logic for MS-DRG 789 for FY 2012.

Comment: Several commenters supported our proposal to add discharge status code 66 to the MS-DRG GROUPER logic for MS-DRG 789.

Response: We appreciate the support of the commenters.

After consideration of the public comments we received, we are finalizing our proposal to add discharge status code 66 (Discharged/Transferred to Critical Assess Hospital (CAH)) to the MS-DRG GROUPER logic for MS-DRG 789.

9. Medicare Code Editor (MCE) Changes

As explained under section II.B.1. of the preamble of this final rule, the Medicare Code Editor (MCE) is a software program that detects and reports errors in the coding of Medicare claims data. Patient diagnoses, procedure(s), and demographic information are entered into the Medicare claims processing systems and are subjected to a series of automated screens. The MCE screens are designed to identify cases that require further review before classification into an MS-DRG. In this final rule, we discuss our intention to make the following change to the MCE edits.

In section II.G.7.b. of this preamble, we discuss that the current ICD-9-CM procedure code for sleeve gastrectomy (43.89 (Other partial gastrectomy, other)) is a noncovered code when performed for resection of the stomach in patients with morbid obesity. We also discuss that noncoverage for Medicare beneficiaries of cases containing procedure code 43.89 is determined by the fiscal intermediaries or A-B/MACs because of the nature of procedure code 43.89. This code is imprecise and identifies several other gastrectomy procedures in addition to sleeve resection. Therefore, to limit coverage by identifying a code that describes many procedures through the use of the MCE would inappropriately restrict other procedures that are covered by Medicare. In that section, we also state that we received a request to create specific procedure codes identifying both laparoscopic sleeve gastrectomy and open vertical sleeve gastrectomy. As we stated above, we addressed this request at the ICD-9-CM Coordination and Maintenance Committee meeting held on March 9, 2011. In the FY 2012 IPPS/LTCH PPS proposed rule (FR 76 25833 and 25834), we indicated that if a code or codes should be created as a result of this request, we would then be able to add these codes to the MCE as a conforming noncoverage edit when combined with diagnosis code 278.01 (Morbid obesity).

As the timing of development of the proposed rule and the scheduling of the ICD-9-CM Coordination and Maintenance Committee meeting on March 9, 2011 overlapped, it was not possible to determine what those codes might be, or even if they would be created for FY 2012. However, we indicated in the proposed rule that should a code or codes be created, we proposed that any code or codes for laparoscopic or open sleeve resection of the stomach would be added to the MCE as a noncovered procedure or Start Printed Page 51541procedures, in combination with diagnosis code 278.01. The background information discussing sleeve gastrectomy coding can be accessed on the CMS Web site at: http://www.cms.gov/​ICD9ProviderDiagnosticcodes/​03_​meetings.asp#TopOfPage. New codes describing sleeve gastrectomy are included in Table 6B (which is listed in section VI. of the Addendum to this final rule and are also available via the Internet at http://www.cms.gov/​ICD9ProviderDiagnosticCodes/​04_​addendum.asp#TopOfPage). In the proposed rule, we indicated that we did not have a mechanism to make the codes available prior to the final rule's publication, and invited public comments on this proposal.

As a result of the March 9, 2011 ICD-9-CM Coordination and Maintenance Committee Meeting, one code was created: procedure code 43.82 (Laparoscopic vertical (sleeve) gastrectomy). To address open gastrectomies, the title of existing procedure code 43.89 was revised to read “Open and other partial gastrectomy”. Both codes can be found in Tables 6B and 6F, which are listed in the Addendum to this final rule and available via the Internet.

Comment: Several commenters indicated that they had no objections to the proposed changes to the MS-DRG classifications and the MCE, stating that the proposed changes seemed reasonable, given the data and information provided. One commenter specifically requested that CMS finalize its proposal to add new procedure code 43.82 to the MCE as a noncovered procedure.

Response: We appreciate the commenters' support of our proposals.

Comment: Several commenters stated that because procedure code 43.89 is not specific to open sleeve gastrectomy it cannot be incorporated as a “noncovered procedure” in the MCE.

Response: We agree that procedure code 43.89 includes several gastrectomy procedures, and to identify this code describing many procedures in an MCE edit would be inappropriately restricting other procedures that are covered.

Comment: One commenter recognized that procedure codes discussed at the ICD-9-CM Coordination and Maintenance Committee Meeting of March 9, 2011 could not logistically be included in the IPPS proposed rule. The commenter urged CMS to apply current logic to code revisions that were discussed at the March 2011 ICD-9-CM Coordination and Maintenance Committee meeting, but which could not be finalized in time to include them in the proposed rule.

Response: We appreciate that the public understands some of the timing constraints under which we must operate. We assure the public that the same logic considerations regarding code assignment to predecessor MS-DRGs as well as O.R. determinations are applied to newly created codes from the March 2011 ICD-9-CM Coordination and Maintenance Committee Meeting as were applied to the codes created as a result of the September 15, 2010 ICD-9-CM Coordination and Maintenance Committee Meeting.

After consideration of the public comments we received, we are adopting as final our proposal to add procedure code 43.82 to the “Noncovered Procedures” edit of the MCE, given that laparoscopic sleeve gastrectomy is not covered for Medicare beneficiaries. Because procedure code 43.89 includes several gastrectomy procedures, its inclusion in the MCE would be inappropriate. Therefore, we are not placing it on the MCE.

10. Surgical Hierarchies

Some inpatient stays entail multiple surgical procedures, each one of which, occurring by itself, could result in assignment of the case to a different MS-DRG within the MDC to which the principal diagnosis is assigned. Therefore, it is necessary to have a decision rule within the GROUPER by which these cases are assigned to a single MS-DRG. The surgical hierarchy, an ordering of surgical classes from most resource-intensive to least resource-intensive, performs that function. Application of this hierarchy ensures that cases involving multiple surgical procedures are assigned to the MS-DRG associated with the most resource-intensive surgical class.

Because the relative resource intensity of surgical classes can shift as a function of MS-DRG reclassification and recalibrations, we reviewed the surgical hierarchy of each MDC, as we have for previous reclassifications and recalibrations, to determine if the ordering of classes coincides with the intensity of resource utilization.

A surgical class can be composed of one or more MS-DRGs. For example, in MDC 11, the surgical class “kidney transplant” consists of a single MS-DRG (MS-DRG 652) and the class “major bladder procedures” consists of three MS-DRGs (MS-DRGs 653, 654, and 655). Consequently, in many cases, the surgical hierarchy has an impact on more than one MS-DRG. The methodology for determining the most resource-intensive surgical class involves weighting the average resources for each MS-DRG by frequency to determine the weighted average resources for each surgical class. For example, assume surgical class A includes MS-DRGs 1 and 2 and surgical class B includes MS-DRGs 3, 4, and 5. Assume also that the average costs of MS-DRG 1 is higher than that of MS-DRG 3, but the average costs of MS-DRGs 4 and 5 are higher than the average costs of MS-DRG 2. To determine whether surgical class A should be higher or lower than surgical class B in the surgical hierarchy, we would weigh the average costs of each MS-DRG in the class by frequency (that is, by the number of cases in the MS-DRG) to determine average resource consumption for the surgical class. The surgical classes would then be ordered from the class with the highest average resource utilization to that with the lowest, with the exception of “other O.R. procedures” as discussed below.

This methodology may occasionally result in assignment of a case involving multiple procedures to the lower-weighted MS-DRG (in the highest, most resource-intensive surgical class) of the available alternatives. However, given that the logic underlying the surgical hierarchy provides that the GROUPER search for the procedure in the most resource-intensive surgical class, in cases involving multiple procedures, this result is sometimes unavoidable.

We note that, notwithstanding the foregoing discussion, there are a few instances when a surgical class with a lower average cost is ordered above a surgical class with a higher average cost. For example, the “other O.R. procedures” surgical class is uniformly ordered last in the surgical hierarchy of each MDC in which it occurs, regardless of the fact that the average costs for the MS-DRG or MS-DRGs in that surgical class may be higher than those for other surgical classes in the MDC. The “other O.R. procedures” class is a group of procedures that are only infrequently related to the diagnoses in the MDC, but are still occasionally performed on patients in the MDC with these diagnoses. Therefore, assignment to these surgical classes should only occur if no other surgical class more closely related to the diagnoses in the MDC is appropriate.

A second example occurs when the difference between the average costs for two surgical classes is very small. We have found that small differences generally do not warrant reordering of the hierarchy because, as a result of reassigning cases on the basis of the hierarchy change, the average costs are likely to shift such that the higher-Start Printed Page 51542ordered surgical class has a lower average costs than the class ordered below it.

As we proposed, based on the changes that we are make for FY 2012, as discussed in sections II.G.1. and 6. of this preamble, we are revising the surgical hierarchy for Pre-MDCs and MDC 9 (Diseases and Disorders of the Skin, Subcutaneous Tissue, and Breast) as follows:

In Pre-MDCs, we are reordering new MS-DRG 016 (Autologous Bone Marrow Transplant with CC/MCC) and new MS-DRG 017 (Autologous Bone Marrow Transplant without CC/MCC) above MS-DRG 010 (Pancreas Transplant).

In MDC 9, we are reordering—

  • MS-DRG 578 (Skin Graft Except for Skin Ulcer or Cellulitis without CC/MCC) above new MS-DRG 570 (Skin Debridement with MCC);
  • New MS-DRG 570 above new MS-DRG 571 (Skin Debridement with CC);
  • New MS-DRG 571 above new MS-DRG 572 (Skin Debridement without CC/MCC; and
  • New MS-DRG 572 above MS-DRG 579 (Other Skin, Subcutaneous Tissue, and Breast Procedures with MCC).

Comment: Commenters generally supported our proposals.

Response: Based on these public comments and our review of the proposed revisions using the March 2011 update of the FY 2010 MedPAR file and the revised GROUPER software, we found that the revisions are still supported by the data. Therefore, we have incorporated the proposed revisions to the surgical hierarchy as final for FY 2012.

11. Complications or Comorbidity (CC) Exclusions List

a. Background

As indicated earlier in the preamble of this final rule, under the IPPS MS-DRG classification system, we have developed a standard list of diagnoses that are considered CCs. Historically, we developed this list using physician panels that classified each diagnosis code based on whether the diagnosis, when present as a secondary condition, would be considered a substantial complication or comorbidity. A substantial complication or comorbidity was defined as a condition that, because of its presence with a specific principal diagnosis, would cause an increase in the length of stay by at least 1 day in at least 75 percent of the patients. We refer readers to section II.D.2. and 3. of the preamble of the FY 2008 IPPS final rule with comment period for a discussion of the refinement of CCs in relation to the MS-DRGs we adopted for FY 2008 (72 FR 47121 through 47152).

b. CC Exclusions List for FY 2012

In the September 1, 1987 final notice (52 FR 33143) concerning changes to the DRG classification system, we modified the GROUPER logic so that certain diagnoses included on the standard list of CCs would not be considered valid CCs in combination with a particular principal diagnosis. We created the CC Exclusions List for the following reasons: (1) To preclude coding of CCs for closely related conditions; (2) to preclude duplicative or inconsistent coding from being treated as CCs; and (3) to ensure that cases are appropriately classified between the complicated and uncomplicated DRGs in a pair. As we indicated above, we developed a list of diagnoses, using physician panels, to include those diagnoses that, when present as a secondary condition, would be considered a substantial complication or comorbidity. In previous years, we have made changes to the list of CCs, either by adding new CCs or deleting CCs already on the list.

In the May 19, 1987 proposed notice (52 FR 18877) and the September 1, 1987 final notice (52 FR 33154), we explained that the excluded secondary diagnoses were established using the following five principles:

  • Chronic and acute manifestations of the same condition should not be considered CCs for one another.
  • Specific and nonspecific (that is, not otherwise specified (NOS)) diagnosis codes for the same condition should not be considered CCs for one another.
  • Codes for the same condition that cannot coexist, such as partial/total, unilateral/bilateral, obstructed/unobstructed, and benign/malignant, should not be considered CCs for one another.
  • Codes for the same condition in anatomically proximal sites should not be considered CCs for one another.
  • Closely related conditions should not be considered CCs for one another.

The creation of the CC Exclusions List was a major project involving hundreds of codes. We have continued to review the remaining CCs to identify additional exclusions and to remove diagnoses from the master list that have been shown not to meet the definition of a CC.[2]

(1) Limited Revisions Based on Changes to the ICD-9-CM Diagnosis Codes

For FY 2012, we proposed to make limited revisions to the CC Exclusions List to take into account the changes made in the ICD-9-CM diagnosis coding system effective October 1, 2011. (We refer readers to section II.G.13. of the preamble of this final rule for a discussion of ICD-9-CM changes.) We proposed to make these changes in accordance with the principles established when we created the CC Exclusions List in 1987. In addition, we indicated on the CC Exclusions List some changes as a result of updates to the ICD-9-CM codes to reflect the exclusion of codes from being MCCs under the MS-DRG system that we adopted in FY 2008.

CMS encourages input from our stakeholders concerning the annual IPPS updates when that input is made available to us by December of the year prior to the next annual proposed rule update. For example, to be considered for any updates or changes in FY 2012, comments and suggestions should have been submitted by early December 2010. The following comments were submitted in a timely manner and, therefore, are being discussed in this section.

(A) Pressure Ulcer Diagnosis Codes

We received a comment recommending that CMS remove diagnosis codes 707.23 (Pressure ulcer, stage III) and 707.24 (Pressure ulcer, stage IV) from the CC Exclusion List when reported as a secondary diagnosis code with a principal diagnosis code for the pressure ulcer site: Diagnosis code 707.00 (Pressure ulcer, unspecified); diagnosis code 707.01 (Pressure ulcer, Start Printed Page 51543elbow); diagnosis code 707.02 (Pressure ulcer, upper back); diagnosis code 707.03 (Pressure ulcer, lower back); diagnosis code 707.04 (Pressure ulcer, hip); diagnosis code 707.05 (Pressure ulcer, buttock); diagnosis code 707.06 (Pressure ulcer, ankle); diagnosis code 707.07 (Pressure ulcer, heel); or diagnosis code 707.09 (Pressure ulcer, other site). Currently, when a patient is admitted with a pressure ulcer, the CC Exclusion List prevents a pressure ulcer stage diagnosis code from being designated as an MCC when reported as a secondary diagnosis. The commenter disagreed with this approach and contended that a patient admitted for treatment of a stage III or stage IV pressure ulcer likely requires resources that would qualify the case as a diagnosis with an MCC or, at a minimum, as a CC.

Our clinical advisors agreed with the commenter. Therefore, in the FY 2012 IPPS/LTCH PPS proposed rule, we proposed to remove diagnosis codes 707.23 and 707.24 from the CC Exclusion List when a principal diagnosis code of one of codes 707.00 through 707.09 is reported. Under this proposal, diagnosis code 707.23 or diagnosis code 707.24 would be an MCC when reported as a secondary diagnosis code with a principal diagnosis code of one of codes 707.00 through 707.09.

Comment: Several commenters supported the proposed removal of diagnosis codes 707.23 and 707.24 from the CC Exclusion list when a principal diagnosis code of one of the codes 707.00 through 707.09 is reported.

Response: We appreciate the support of the commenters. As stated above, we believe this proposed change has merit.

After consideration of the public comments we received, we are adopting as final our proposal to remove diagnosis codes 707.23 (Pressure ulcer stage III) and 707.24 (Pressure ulcer stage IV) from the CC Exclusion List when reported as a secondary diagnosis code with a principal diagnosis code for the pressure ulcer site: diagnosis code 707.00 (Pressure ulcer, unspecified); diagnosis code 707.01 (Pressure ulcer, elbow); diagnosis code 707.02 (Pressure ulcer, upper back); diagnosis code 707.03 (Pressure ulcer, lower back); diagnosis code 707.04 (Pressure ulcer, hip); diagnosis code 707.05 (Pressure ulcer, buttock); diagnosis code 707.06 (Pressure ulcer, ankle); diagnosis code 707.07 (Pressure ulcer, heel); or diagnosis code 707.09 (Pressure ulcer, other site).

(B) End-Stage Renal Disease Diagnosis Code

We received a suggestion from a commenter that diagnosis code 585.6 (End-stage renal disease) be added to the CC Exclusion List when reported with a principal diagnosis code of 403.90 (Hypertensive chronic kidney disease, unspecified, with chronic kidney disease stage I through stage IV, or unspecified) or diagnosis code 403.91 (Hypertensive chronic kidney disease, unspecified, with chronic kidney disease stage V or end-stage renal disease). Currently, diagnosis code 585.6 is designated as an MCC.

According to the commenter, diagnosis codes 585.6 and 403.91 are essentially the same diagnosis but coding guidelines require the reporting of two codes to identify the stage of chronic kidney disease when associated with hypertensive chronic kidney disease. The commenter suggested that there is no need for diagnosis code 585.6 to be designated as an MCC when reported with a principal diagnosis of hypertensive chronic kidney disease, stage V or end-stage renal disease. The commenter also pointed out that, while coding guidelines would preclude diagnosis codes 403.90 and 585.6 from being reported together, the MS-DRG GROUPER allows diagnosis code 585.6 to act as an MCC when reported as a secondary diagnosis with principal diagnosis code 403.90.

As discussed in the proposed rule, in response to the first issue, our clinical advisors disagree with the commenter. Diagnosis code 403.91 includes chronic kidney disease stage V or end-stage renal disease. These are two separate conditions (or stages) that are identified by two unique codes. Diagnosis code 585.5 identifies stage V chronic kidney disease and is classified as a CC. Diagnosis code 585.6 identifies end-stage renal disease, is classified as an MCC, and describes patients who require chronic dialysis. The patients diagnosed with stage V chronic kidney disease are a different population who require different resources than those patients who are diagnosed with end-stage renal disease. Therefore, in the FY 2012 IPPS/LTCH PPS proposed rule, we did not propose to add diagnosis code 585.6 to the CC Exclusion List when reported with a principal diagnosis of code 403.91.

On the second issue raised by the commenter, our clinical advisors agreed. Diagnosis code 403.90 identifies patients with chronic kidney disease, stages I through IV or unspecified, and diagnosis code 585.6 identifies end-stage renal disease. Our clinical advisors indicate that the reporting of diagnosis code 585.6 should not be designated as an MCC in this case. We agreed with the commenter that diagnosis codes 403.90 and 585.6 should not be reported together as instructed by the Coding Guidelines. Only a code from the 585.1 through 585.4 range (stages I through IV, or unspecified) should be reported with diagnosis code 403.90. Diagnosis code 585.6 is the exclusive code that uniquely identifies end-stage renal disease and should only be reported with diagnosis code 403.91. Therefore, in the FY 2012 IPPS/LTCH PPS proposed rule, we proposed to add diagnosis code 585.6 to the CC Exclusion List when reported with a principal diagnosis code of 403.90.

Comment: Several commenters supported our proposal to add diagnosis code 585.6 to the CC Exclusion List when reported with a principal diagnosis code of 403.90.

Response: We appreciate the commenters' support.

After consideration of the public comments we received, we are adopting as final our proposal to add diagnosis code 585.6 (End stage renal disease) to the CC Exclusion List when reported with a principal diagnosis code of 403.90 (Hypertensive chronic kidney disease, unspecified, with chronic kidney disease stage I through stage IV, or unspecified).

(C) Hypertensive Chronic Kidney Disease With Chronic Kidney Disease Stage V or End-Stage Renal Disease Code

We received a comment recommending the addition of diagnosis code 403.91 (Hypertensive chronic kidney disease, unspecified, with chronic kidney disease stage V or end-stage renal disease) to the CC Exclusion List when reported as a secondary diagnosis code with principal diagnosis code 585.6 (End stage renal disease). The commenter stated that it would be unlikely that diagnosis code 403.91 would be reported as a secondary diagnosis code with diagnosis code 585.6 as the principal diagnosis code due to sequencing rules for end-stage renal disease with hypertension. Currently, diagnosis code 403.91 is designated as a CC.

Our clinical advisors agreed with the commenter. Therefore, in the FY 2012 IPPS/LTCH PPS proposed rule, we proposed to add diagnosis code 403.91 to the CC Exclusion List when reported as a secondary diagnosis code with principal diagnosis code 585.6.

Comment: Several commenters supported our proposal to add diagnosis code 403.91 to the CC Exclusion List Start Printed Page 51544when reported as a secondary diagnosis code with principal diagnosis code 585.6.

Response: We appreciate the commenters' support.

After consideration of the public comments we received, we are adopting as final our proposal to add diagnosis code 403.91 (Hypertensive chronic kidney disease, unspecified, with chronic kidney disease stage V or end stage renal disease) to the CC Exclusion List when reported as a secondary diagnosis code with principal diagnosis code 585.6 (End stage renal disease).

(2) Suggested Changes to Severity Levels for Encephalopathy

We received a request that we consider changing the following diagnosis codes from an MCC to a CC:

  • 348.30 (Encephalopathy NOS)
  • 348.31 (Metabolic encephalopathy)
  • 348.39 (Encephalopathy NEC)
  • 349.82 (Toxic encephalopathy)
  • 572.2 (Hepatic encephalopathy)

For the FY 2012 IPPS/LTCH PPS proposed rule, we analyzed the claims data for the diagnosis codes mentioned above related to encephalopathy. We used the same approach we used in initially creating the MS-DRGs and classifying secondary diagnosis codes as non-CCs, CCs, or MCCs. A detailed discussion of the process and criteria we used in this process is described in the FY 2008 IPPS final rule (72 FR 47158 through 47161). We refer the readers to this discussion for complete information on our approach to developing the non-CC, CC, and MCC lists. Each diagnosis for which Medicare data were available was evaluated to determine its impact on resource use and to determine the most appropriate CC subclass (non-CC, CC, or MCC) assignment. In order to make this determination, the average cost for each subset of cases was compared to the expected cost for cases in that subset. The following format was used to evaluate each diagnosis:

CodeDiagnosisCnt1C1Cnt2C2Cnt3C3

Count (Cnt) is the number of patients in each subset. C1, C2, and C3 are a measure of the impact on resource use of patients in each of the subsets. The C1, C2, and C3 values are a measure of the ratio of average costs for patients with these conditions to the expected average cost across all cases. The C1 value reflects a patient with no other secondary diagnosis or with all other secondary diagnoses that are non-CCs. The C2 value reflects a patient with at least one other secondary diagnosis that is a CC but none that is a MCC. The C3 value reflects a patient with at least one other secondary diagnosis that is a MCC. A value close to 1.0 in the C1 field would suggest that the diagnosis code produces the same expected value as a non-CC. A value close to 2.0 suggests the condition is more like a CC than a non-CC but not as significant in resource usage as an MCC. A value close to 3.0 suggests the condition is expected to consume resources more similar to an MCC than a CC or non-CC. For additional details on this analysis, we refer readers to the FY 2008 IPPS final rule (72 FR 47158 through 47161).

The following chart shows the analysis for each of the encephalopathy diagnosis codes that are currently classified as MCCs.

CodeDiagnosis descriptionCC levelCnt 1Cnt 1 impactCnt 2Cnt 2 impactCnt 3Cnt 3 impact
34830Encephalopathy NOSMCC10,0822.120639,0422.777460,3813.3702
34831Metabolic encephalopathyMCC6,3892.058029,6512.695249,3433.4011
34839Encephalopathy NECMCC4,0042.111815,0032.735519,7323.3708
34982Toxic encephalopathyMCC4,3332.315818,1263.002326,0093.5714
5722Hepatic encephalopathyMCC1,3751.54489,8852.505412,4213.4435

We ran the following data as described in FY 2008 IPPS final rule (72 FR 47158 through 47161). The C1 value reflects a patient with no other secondary diagnosis or with all other secondary diagnoses that are non-CCs. The C2 value reflects a patient with at least one other secondary diagnosis that is a CC but none that is a MCC. The C3 value reflects a patient with at least one other secondary diagnosis that is a MCC.

The chart above shows that the C1 findings ranged from a low of 1.5448 to a high of 2.3158. As stated earlier, a C1 value close to 2.0 suggests the condition is more like a CC than a non-CC but not as significant in resource usage as an MCC. The C1 findings suggest that these codes are more like a CC than a MCC. However, the C2 findings ranged from a low of 2.5054 to a high of 3.0023. Values close to 3.0 suggests the condition is more similar to an MCC than a CC or non-CC. The C2 findings support maintaining the encephalopathy codes as an MCC level. The data are clearly mixed between the C1 and C2 findings, and does not consistently support a change in the severity level. Our clinical advisers recommended that these encephalopathy codes remain at an MCC level because these patients with encephalopathy typically utilize significant resources and are at a higher severity level. Based on the clinical analysis and the lack of consistent claims data support for the severity level change, we indicated in the proposed rule that we believe that the encephalopathy codes should remain on the MCC list. Therefore, we proposed to retain the following encephalopathy codes on the MCC list:

  • 348.30 (Encephalopathy NOS)
  • 348.31 (Metabolic encephalopathy)
  • 348.39 (Encephalopathy NEC)
  • 349.82 (Toxic encephalopathy)
  • 572.2 (Hepatic encephalopathy)

We invited public comment on our proposal not to change the severity level classification for these codes.

Comment: Several commenters supported our proposal not to change the MCC severity level classification for the encephalopathy codes listed above. The commenters agreed with our findings that the data were mixed between the C1 and C2 findings for these codes, which are currently on the MCC list, and that clinical evaluation of these conditions supports maintaining them on the MCC list.

Response: We appreciate the commenters' support. As stated above, our data showed mixed findings for C1 and C2 with C1 findings supporting a change to CC, but C2 findings supporting maintaining the codes on the MCC list. Our clinical advisors' evaluation of encephalopathy patients supports our proposal to maintain these encephalopathy codes on the MCC list.Start Printed Page 51545

After consideration of the public comments we received, as we proposed, we are keeping the following encephalopathy codes on the MCC list.

  • 348.30 (Encephalopathy NOS) MCC
  • 348.31 (Metabolic encephalopathy) MCC
  • 348.39 (Encephalopathy NEC) MCC
  • 349.82 (Toxic encephalopathy) MCC
  • 572.2 (Hepatic encephalopathy) MCC

(3) Suggested Changes to Severity Levels for Mechanical Complication and Infection Due to Device-Related Codes

We received a request to change the severity classification from CCs to MCCs for the following diagnosis codes:

  • 996.01 (Mechanical of cardiac device, implant and graft due to cardiac pacemaker (electrode)).
  • 996.04 (Mechanical complication of cardiac device, implant, and graft due to automatic implantable cardiac defibrillator).
  • 996.61 (Infection and inflammatory reaction due to internal prosthetic device, implant, and graft due to cardiac device, implant, and graft).

Currently, all three diagnosis codes are classified as a CC. For the FY 2012 IPPS/LTCH PPS proposed rule, we analyzed claims data using the methodology described previously in this section for these diagnosis codes. The following chart shows our findings:

CodeDiagnosis descriptionCC LevelCnt 1Cnt 1 ImpactCnt 2Cnt 2 ImpactCnt 3Cnt 3 Impact
99601Malfunc cardiac pacemakerCC1,2961.67231,9202.43321,3333.1134
99604Mch cmp autm mplnt dfbrlCC4191.70411,0322.51906603.1508
99661React-cardiac dev/graftCC1491.99226332.81341,2533.5036

We reviewed the findings from these data. The C1 findings ranged from a low of 1.6723 to a high of 1.9922. As stated earlier, a value close to 2.0 in the C1 field suggests that the condition is more like a CC than a non-CC but not as significant in resource usage as an MCC. The C1 findings clearly support the current classification of these three codes on the CC list and the C2 findings supports this classification. Our clinical advisors agree that the data findings and their own clinical evaluation of the severity level of these conditions support the classification of these three codes on the CC list. Therefore, we proposed that these codes remain on the CC list. We invited public comment on this proposal.

Comment: Several commenters supported our proposal to maintain the mechanical complication and infection due to device-related codes mentioned above on the CC list. The commenters agreed that the data as well as our clinical advisors' evaluation support the current classification.

Several commenters opposed our proposal to keep the mechanical complication and infection due to device-related codes on the CC list. In support of their position, the commenters cited our decision to keep the encephalopathy codes on the MCC list. They pointed out that the encephalopathy codes had C1 findings of a low of 1.5448 to a high of 2.3158 and C2 findings of a low of 2.5054 to a high of 3.0023, yet they were maintained on the MCC list. The commenters believed that the same logic should be applied to the mechanical complication and infection due to device-related codes which had C1 findings of a low of 1.6723 to a high of 1.9922 and C2 findings of a low of 2.4332 to a high of 2.8134. One commenter also offered data from the Healthcare Utilization Project (HCUP) database which showed 2008 national statistics of average costs for patients admitted with one of these codes as a principal diagnosis. This commenter stated that these data showed average costs as follows:

2008 National Statistics—Principal Diagnosis Only Ranked by Costs, Descending Order: Medicare Only

ICD-9-CM Principal diagnosis codeTotal number of dischargesLength of stay (LOS) (mean)Charges $ (mean)Costs $ (mean)
996.61—React-Cardiac Dev/Graft8,94410.795,25126,893
996.04—Mch Comp Aut, Mplnt Dfbri8,0953.259,92416,891
996.01—Malfunc Cardiac Pacemake8,6642.837,05611,044
427.5—Cardiac Arrest4,7813.635,49910,908
349.82—Toxic Encephalopathy6,8356.537,91310,765
428.23—Ac On Chr Syst Hrt Fail75,5115.833,73210,689
428.1—Left Heart Failure2,2615.126,77710,252
348.39—Encephalopathy Nec4,8806.332,1249,609
428.31—Ac Diastolic Hrt Failure37,2165.530,1679,298
348.30—Encephalopathy Nos11,0575.931,9339,232
572.2—Hepatic encephalopathy20,1545.428,0568,580

The commenter stated that these data support changing these codes to the MCC list since the costs associated with these admissions were higher than admissions for encephalopathy.

Response: We agree with the commenters who supported maintaining the current CC severity level for the mechanical complication and infection due to device related codes. As discussed above the C1 and C2 findings as well as the advice of our clinical advisors supports this recommendation.

We disagree with the commenters who made comparisons to our proposals for the encephalopathy codes. The encephalopathy codes had C1 findings of a low of 1.5448 to a high of 2.3158 and C2 findings of a low of 2.5054 to a high of 3.0023. The encephalopathy codes C1 findings supported a change to a CC level. The C2 findings of a high of 3.0023 support the current MCC assignment for those codes.

The mechanical complication and infection due to device-related codes had C1 findings of a low of 1.6723 and Start Printed Page 51546a high of 1.9922, which are more like a CC than a non-CC but not as significant in resource usage as an MCC. The C2 findings of a low of 2.4332 and a high of 2.8134 are also supportive of a CC classification because, while one was a high of 2.8134, the other was only 2.4332. Only one of the codes had a finding that approached 3.0 and neither exceeded 3.0. Furthermore, our clinical advisors' evaluation of data on patients with encephalopathy as a secondary diagnosis indicates that these patients are at a higher severity level. Our clinical advisors did not believe that patients who have one of the mechanical complication and infection due to device-related codes as a secondary diagnoses would require resources justifying the MCC severity level.

We point out that the data that the commenter shared focused on patients admitted for either a mechanical complication or infection due to device-related code or for encephalopathy. In other words, these conditions were the principal diagnosis in this data. These cases did not report the codes as secondary diagnoses. Our clinical criteria are based on these conditions being reported as a secondary diagnosis and the effect that has on all types of admissions. A detailed discussion of the process and criteria we used in this process is described in the FY 2008 IPPS final rule with comment period (72 FR 47158 through 47161). It may well make a difference in the overall costs of the admission if a patient were admitted for these types of complications and required a pacemaker insertion during the stay. Clearly, the encephalopathy cases would not have had a device inserted. Therefore, it is not possible to determine the effect of the impact of these conditions as a secondary diagnosis based on these data because the additional costs of a device is included. Our approach isolates the effect of the individual code on all types of admissions when it is reported as a secondary diagnosis. It also looks at whether this code is the only CC or MCC reported (C1 cases), reported with another CC diagnosis (C2 cases), or reported with another MCC diagnosis (C3). We cannot determine what, if any, secondary diagnoses were present for the cases shown in the HCUP data shown above.

We believe our consistent approach to evaluating the effect of a secondary diagnosis is more appropriate than looking at average costs when the condition is reported as a principal diagnosis in establishing the severity level of these codes. Modifying the approach by also looking at the principal diagnosis would significantly modify our current approach that focuses solely on evaluating the impact of secondary diagnoses on increasing the severity of the overall admission. We also note that our clinical advisors' evaluation of these cases, who advised that the codes should remain on the CC lists, supports the findings of the data and maintaining the codes on the CC list.

After consideration of the public comments we received, as we proposed, we are maintain the mechanical complication and infection due to device-related codes listed below on the CC list for FY 2012.

  • 996.01 (Mechanical of cardiac device, implant and graft due to cardiac pacemaker (electrode))—CC
  • 996.04 (Mechanical complication of cardiac device, implant, and graft due to automatic implantable cardiac defibrillator)—CC
  • 996.61 (Infection and inflammatory reaction due to internal prosthetic device, implant, and graft due to cardiac device, implant, and graft)—CC

Tables 6G and 6H, Additions to and Deletions from the CC Exclusion List, respectively, which are effective for discharges occurring on or after October 1, 2011, are not being published in the Addendum to this final rule because of the length of the two tables. Instead, we are making them available through the Internet on the CMS Web site at: http://www.cms.hhs.gov/​AcuteInpatientPPS. Each of these principal diagnoses for which there is a CC exclusion is shown in Tables 6G and 6H, which are listed in section VI. of the Addendum to this final rule (and available via the Internet) with an asterisk, and the conditions that will not count as a CC, are provided in an indented column immediately following the affected principal diagnosis.

A complete updated MCC, CC, and Non-CC Exclusions List is also available through the Internet on the CMS Web site at: http://www.cms.hhs.gov/​AcuteInpatientPPS. Beginning with discharges on or after October 1, 2011, the indented diagnoses will not be recognized by the GROUPER as valid CCs for the asterisked principal diagnosis.

To assist readers in identifying the changes to the MCC and CC lists that occurred as a result of updates to the ICD-9-CM codes, as described in Tables 6A, 6C, and 6E, which are listed in section VI. of the Addendum to this final rule and available via the Internet, we are providing the following summaries of those MCC and CC changes for FY 2012.

Summary of Additions to the MS-DRG MCC List—Table 6I.1

CodeDescription
284.11Antineoplastic chemotherapy induced pancytopenia.
284.12Other drug-induced pancytopenia.
348.82Brain death.
415.13Saddle embolus of pulmonary artery.
444.01Saddle embolus of abdominal aorta.
488.81Influenza due to identified novel influenza A virus with pneumonia.
516.4Lymphangioleiomyomatosis.
516.61Neuroendocrine cell hyperplasia of infancy.
516.62Pulmonary interstitial glycogenosis.
516.63Surfactant mutations of the lung.
516.64Alveolar capillary dysplasia with vein misalignment.
516.69Other interstitial lung diseases of childhood.
518.51Acute respiratory failure following trauma and surgery.
518.52Other pulmonary insufficiency, not elsewhere classified, following trauma and surgery.
518.53Acute and chronic respiratory failure following trauma and surgery.
747.31Pulmonary artery coarctation and atresia.
747.32Pulmonary arteriovenous malformation.
747.39Other anomalies of pulmonary artery and pulmonary circulation.
808.54Multiple open pelvic fractures without disruption of pelvic circle.
998.01Postoperative shock, cardiogenic.
Start Printed Page 51547
998.02Postoperative shock, septic.
998.09Postoperative shock, other.

Summary of Deletions From the MS-DRG MCC List—Table 6I.2

CodeDescription
518.5Pulmonary insufficiency following trauma and surgery.
747.3Anomalies of pulmonary artery.

Summary of Additions to the MS-DRG CC List—Table 6J.1

CodeDescription
284.19Other pancytopenia.
286.52Acquired hemophilia.
286.53Antiphospholipid antibody with hemorrhagic disorder.
286.59Other hemorrhagic disorder due to intrinsic circulating anticoagulants, antibodies, or inhibitors.
294.21Dementia, unspecified, with behavioral disturbance.
358.30Lambert-Eaton syndrome, unspecified.
358.31Lambert-Eaton syndrome in neoplastic disease.
358.39Lambert-Eaton syndrome in other diseases classified elsewhere.
425.11Hypertrophic obstructive cardiomyopathy.
425.18Other hypertrophic cardiomyopathy.
444.09Other arterial embolism and thrombosis of abdominal aorta.
512.2Postoperative air leak.
512.81Primary spontaneous pneumothorax.
512.82Secondary spontaneous pneumothorax.
512.83Chronic pneumothorax.
512.84Other air leak.
512.89Other pneumothorax.
516.33Acute interstitial pneumonitis.
516.35Idiopathic lymphoid interstitial pneumonia.
516.36Cryptogenic organizing pneumonia.
516.37Desquamative interstitial pneumonia.
516.5Adult pulmonary Langerhans cell histiocytosis.
539.01Infection due to gastric band procedure.
539.09Other complications of gastric band procedure.
539.81Infection due to other bariatric procedure.
539.89Other complications of other bariatric procedure.
596.81Infection of cystostomy.
596.82Mechanical complication of cystostomy.
596.83Other complication of cystostomy.
808.44Multiple closed pelvic fractures without disruption of pelvic circle.
996.88Complications of transplanted organ, stem cell.
997.32Postprocedural aspiration pneumonia.
997.41Retained cholelithiasis following cholecystectomy.
997.49Other digestive system complications.
998.00Postoperative shock, unspecified.
999.32Bloodstream infection due to central venous catheter.
999.33Local infection due to central venous catheter.
999.34Acute infection following transfusion, infusion, or injection of blood and blood products.
999.41Anaphylactic reaction due to administration of blood and blood products.
999.42Anaphylactic reaction due to vaccination.
999.49Anaphylactic reaction due to other serum.
999.51Other serum reaction due to administration of blood and blood products.
999.52Other serum reaction due to vaccination.
999.59Other serum reaction.

Summary of Deletions From the MS-DRG CC List—Table 6J.2

CodeDescription
284.1Pancytopenia.
286.5Hemorrhagic disorder due to intrinsic circulating anticoagulants.
425.1Hypertrophic obstructive cardiomyopathy.
444.0Embolism and thrombosis of abdominal aorta.
512.8Other spontaneous pneumothorax.
516.3Idiopathic fibrosing alveolitis.
Start Printed Page 51548
997.4Digestive system complications.
998.0Postoperative shock.
999.4Anaphylactic shock due to serum.
999.5Other serum reaction.

Alternatively, the complete documentation of the GROUPER logic, including the current CC Exclusions List, is available from 3M/Health Information Systems (HIS), which, under contract with CMS, is responsible for updating and maintaining the GROUPER program. The current MS-DRG Definitions Manual, Version 28.0, is available on a CD for $225.00. Version 29.0 of this manual, which will include the final FY 2012 MS-DRG changes, will be available on a CD for $225.00. These manuals may be obtained by writing 3M/HIS at the following address: 100 Barnes Road, Wallingford, CT 06492; or by calling (203) 949-0303, or by obtaining an order form at the Web site: http://www.3MHIS.com. Please specify the revision or revisions requested.

12. Review of Procedure Codes in MS DRGs 981 Through 983; 984 Through 986; and 987 Through 989

Each year, we review cases assigned to former CMS DRG 468 (Extensive O.R. Procedure Unrelated to Principal Diagnosis), CMS DRG 476 (Prostatic O.R. Procedure Unrelated to Principal Diagnosis), and CMS DRG 477 (Nonextensive O.R. Procedure Unrelated to Principal Diagnosis) to determine whether it would be appropriate to change the procedures assigned among these CMS DRGs. Under the MS-DRGs that we adopted for FY 2008, CMS DRG 468 was split three ways and became MS-DRGs 981, 982, and 983 (Extensive O.R. Procedure Unrelated to Principal Diagnosis with MCC, with CC, and without CC/MCC, respectively). CMS DRG 476 became MS-DRGs 984, 985, and 986 (Prostatic O.R. Procedure Unrelated to Principal Diagnosis with MCC, with CC, and without CC/MCC, respectively). CMS DRG 477 became MS-DRGs 987, 988, and 989 (Nonextensive O.R. Procedure Unrelated to Principal Diagnosis with MCC, with CC, and without CC/MCC, respectively).

MS-DRGs 981 through 983, 984 through 986, and 987 through 989 (formerly CMS DRGs 468, 476, and 477, respectively) are reserved for those cases in which none of the O.R. procedures performed are related to the principal diagnosis. These MS-DRGs are intended to capture atypical cases, that is, those cases not occurring with sufficient frequency to represent a distinct, recognizable clinical group. MS-DRGs 984 through 986 (previously CMS DRG 476) are assigned to those discharges in which one or more of the following prostatic procedures are performed and are unrelated to the principal diagnosis:

  • 60.0, Incision of prostate
  • 60.12, Open biopsy of prostate
  • 60.15, Biopsy of periprostatic tissue
  • 60.18, Other diagnostic procedures on prostate and periprostatic tissue
  • 60.21, Transurethral prostatectomy
  • 60.29, Other transurethral prostatectomy
  • 60.61, Local excision of lesion of prostate
  • 60.69, Prostatectomy, not elsewhere classified
  • 60.81, Incision of periprostatic tissue
  • 60.82, Excision of periprostatic tissue
  • 60.93, Repair of prostate
  • 60.94, Control of (postoperative) hemorrhage of prostate
  • 60.95, Transurethral balloon dilation of the prostatic urethra
  • 60.96, Transurethral destruction of prostate tissue by microwave thermotherapy
  • 60.97, Other transurethral destruction of prostate tissue by other thermotherapy
  • 60.99, Other operations on prostate

All remaining O.R. procedures are assigned to MS-DRGs 981 through 983 and 987 through 989, with MS-DRGs 987 through 989 assigned to those discharges in which the only procedures performed are nonextensive procedures that are unrelated to the principal diagnosis.[3]

Our review of MedPAR claims data showed that there were no cases that merited movement or should logically be assigned to any of the other MDCs. Therefore, for FY 2012, we did not propose to change the procedures assigned among these MS-DRGs.

We did not receive any public comments on this proposal. Therefore, as we proposed, we are not making any changes to the procedures assigned to MS-DRGs 981 through 983, 984 through 986, and 987 through 989 for FY 2012.

a. Moving Procedure Codes From MS-DRGs 981 Through 983 or MS-DRGs 987 Through 989 Into MDCs

We annually conduct a review of procedures producing assignment to MS-DRGs 981 through 983 (Extensive O.R. procedure unrelated to principal diagnosis with MCC, with CC, and without CC.MCC, respectively) or MS-DRGs 987 through 989 (Nonextensive O.R. procedure unrelated to principal diagnosis with MCC, with CC, and without CC/MCC, respectively) on the basis of volume, by procedure, to see if it would be appropriate to move procedure codes out of these MS-DRGs into one of the surgical MS-DRGs for the MDC into which the principal diagnosis falls. The data are arrayed in two ways for comparison purposes. We look at a frequency count of each major operative procedure code. We also compare procedures across MDCs by volume of procedure codes within each MDC.

We identify those procedures occurring in conjunction with certain principal diagnoses with sufficient frequency to justify adding them to one of the surgical MS-DRGs for the MDC in Start Printed Page 51549which the diagnosis falls. As noted above, there were no cases that merited movement or that should logically be assigned to any of the other MDCs. Therefore, for FY 2012, we did not propose to remove any procedures from MS-DRGs 981 through 983 or MS-DRGs 987 through 989 into one of the surgical MS-DRGs for the MDC into which the principal diagnosis is assigned.

We did not receive any public comments on our proposal. Therefore, as we proposed, we are not making any changes to the procedures assigned to MS-DRGs 981 through 983 or 987 through 989 for FY 2012.

b. Reassignment of Procedures Among MS-DRGs 981 Through 983, 984 Through 986, and 987 Through 989

We also annually review the list of ICD-9-CM procedures that, when in combination with their principal diagnosis code, result in assignment to MS-DRGs 981 through 983, 984 through 986 (Prostatic O.R. procedure unrelated to principal diagnosis with MCC, with CC, or without CC/MCC, respectively), and 987 through 989, to ascertain whether any of those procedures should be reassigned from one of these three MS-DRGs to another of the three MS-DRGs based on average charges and the length of stay. We look at the data for trends such as shifts in treatment practice or reporting practice that would make the resulting MS-DRG assignment illogical. If we find these shifts, we would propose to move cases to keep the MS-DRGs clinically similar or to provide payment for the cases in a similar manner. Generally, we move only those procedures for which we have an adequate number of discharges to analyze the data.

There were no cases representing shifts in treatment practice or reporting practice that would make the resulting MS-DRG assignment illogical, or that merited movement so that cases should logically be assigned to any of the other MDCs. Therefore, for FY 2012, we did not propose to move any procedure codes among these MS-DRGs.

We did not receive any public comments on our proposal. Therefore, as we proposed, we are not moving any procedures assigned to MS-DRGs 981 through 983, 984 through 986, and 987 through 989 for FY 2012.

c. Adding Diagnosis or Procedure Codes to MDCs

Based on the review of cases in the MDCs as described above in sections III.G.12.a. and b., we did not propose to add any diagnosis or procedure codes to MDCs for FY 2012.

We did not receive any public comments on our proposal. Therefore, as we proposed, we are not adding any diagnosis or procedure codes to MDCs for FY 2012.

13. Changes to the ICD-9-CM Coding System, Including Discussion of the Replacement of the ICD-9-CM Coding System With the ICD-10-CM and ICD-10-PCS Systems in FY 2014

a. ICD-9-CM Coding System

As described in section II.B.1. of the preamble of this final rule, the ICD-9-CM is a coding system currently used for the reporting of diagnoses and procedures performed on a patient. In September 1985, the ICD-9-CM Coordination and Maintenance Committee was formed. This is a Federal interdepartmental committee, co-chaired by the National Center for Health Statistics (NCHS), the Centers for Disease Control and Prevention, and CMS, charged with maintaining and updating the ICD-9-CM system. The Committee is jointly responsible for approving coding changes, and developing errata, addenda, and other modifications to the ICD-9-CM to reflect newly developed procedures and technologies and newly identified diseases. The Committee is also responsible for promoting the use of Federal and non-Federal educational programs and other communication techniques with a view toward standardizing coding applications and upgrading the quality of the classification system.

The Official Version of the ICD-9-CM contains the list of valid diagnosis and procedure codes. (The Official Version of the ICD-9-CM is available from the Government Printing Office on CD-ROM for $19.00 by calling (202) 512-1800.) Complete information on ordering the CD-ROM is also available at: http://www.cms.hhs.gov/​ICD9ProviderDiagnosticCodes/​05_​CDROM.asp#TopOfPage. The Official Version of the ICD-9-CM is no longer available in printed manual form from the Federal Government; it is only available on CD-ROM. Users who need a paper version are referred to one of the many products available from publishing houses.

The NCHS has lead responsibility for the ICD-9-CM diagnosis codes included in the Tabular List and Alphabetic Index for Diseases, while CMS has lead responsibility for the ICD-9-CM procedure codes included in the Tabular List and Alphabetic Index for Procedures.

The Committee encourages participation in the above process by health-related organizations. In this regard, the Committee holds public meetings for discussion of educational issues and proposed coding changes. These meetings provide an opportunity for representatives of recognized organizations in the coding field, such as the American Health Information Management Association (AHIMA), the American Hospital Association (AHA), and various physician specialty groups, as well as individual physicians, health information management professionals, and other members of the public, to contribute ideas on coding matters. After considering the opinions expressed at the public meetings and in writing, the Committee formulates recommendations, which then must be approved by the agencies.

The Committee presented proposals for coding changes for implementation in FY 2012 at a public meeting held on September 15-16, 2010 and finalized the coding changes after consideration of comments received at the meetings and in writing by November 19, 2010. Those coding changes were announced in Tables 6A through 6F, which were listed in section VI. of the Addendum to the proposed rule and available via the Internet.

The Committee held its 2011 meeting on March 9-10, 2011. New codes for which there was a consensus of public support and for which complete tabular and indexing changes were made by May 2011 are included in the October 1, 2011 update to ICD-9-CM. Code revisions that were discussed at the March 9-10, 2011 Committee meeting but that could not be finalized in time to include them in the tables listed in section VI. of the Addendum to the proposed rule are included in Tables 6A through 6F, which are listed in section VI. of the Addendum to this final rule and available via the Internet, and are marked with an asterisk (*).

Copies of the minutes of the procedure codes discussions at the Committee's September 15-16, 2010 meeting and March 9-10, 2011 meeting can be obtained from the CMS Web site at: http://cms.hhs.gov/​ICD9ProviderDiagnosticCodes/​03_​meetings.asp. The minutes of the diagnosis codes discussions at the September 15-16, 2010 meeting and March 9-10, 2011 meeting are found at: http://www.cdc.gov/​nchs/​icd.htm. These Web sites also provide detailed information about the Committee, including information on requesting a new code, attending a Committee meeting, and timeline requirements and meeting dates.

We encourage commenters to address suggestions on coding issues involving Start Printed Page 51550diagnosis codes to: Donna Pickett, Co-Chairperson, ICD-9-CM Coordination and Maintenance Committee, NCHS, Room 2402, 3311 Toledo Road, Hyattsville, MD 20782. Comments may be sent by E-mail to: dfp4@cdc.gov.

Questions and comments concerning the procedure codes should be addressed to: Patricia E. Brooks, Co-Chairperson, ICD-9-CM Coordination and Maintenance Committee, CMS, Center for Medicare Management, Hospital and Ambulatory Policy Group, Division of Acute Care, C4-08-06, 7500 Security Boulevard, Baltimore, MD 21244-1850. Comments may be sent by E-mail to: patricia.brooks2@cms.hhs.gov.

The ICD-9-CM code changes that have been approved will become effective October 1, 2011. The new ICD-9-CM codes are listed, along with their MS-DRG classifications, in Tables 6A and 6B (New Diagnosis Codes and New Procedure Codes, respectively), which are listed in section VI. of the Addendum to this final rule and available via the Internet. As we stated above, the code numbers and their titles were presented for public comment at the ICD-9-CM Coordination and Maintenance Committee meetings. Both oral and written comments were considered before the codes were approved.

In the FY 2012 IPPS/LTCH PPS proposed rule, we solicited comments on the proposed classification of these new codes, which were shown in Tables 6A and 6B listed in section VI. of the Addendum to the proposed rule and available via the Internet.

Comment: Several commenters generally supported the proposed changes to the MS-DRG classifications. One commenter supported the non-CC designation for the following new diagnosis codes: 282.40 (Thalassemia, unspecified); 282.43 (Alpha thalassemia); code 282.44 (Beta thalassemia); 282.45 (Delta-beta thalassemia); 282.46 (Thalassemia minor); 282.47 (Hemoglobin E-beta Thalassemia); 516.31 (Idiopathic pulmonary fibrosis); 516.32 (Idiopathic non-specific interstitial pneumonitis); and 516.34 (Respiratory bronchiolitis interstitial lung disease). The commenter also supported the non-CC designation for and the assignment of code 573.5 (Hepatopulmonary syndrome) in MDC 4, MS-DRGs 205 and 206 (Other Respiratory System Diagnoses with and without MCC, respectively).

However, the commenter did not support the non-CC designation of code 294.21 (Dementia, unspecified, with behavioral disturbance). The commenter noted that a similar diagnosis with behavioral disturbance such as code 294.11 (Dementia in conditions classified elsewhere with behavioral disturbance) is designated as a CC and questioned why the same logic had not been considered for code 294.21.

Response: Our medical advisors agree with the commenter's assessment that diagnosis code 294.21 should qualify as a CC, similar to code 294.11. Both codes identify dementia with behavioral disturbance and use similar resource use. Therefore, in this final rule, we are changing the proposed non-CC designation for code 294.21 and classifying it as a CC in Table 6A. This change is reflected in Table 6A of this final rule which is available via the Internet on the CMS Web site.

Comment: One commenter did not support the non-CC designation for diagnosis code 414.4 (Coronary atherosclerosis due to calcified coronary lesion). The commenter stated that this code should be designated as a CC, the same designation assigned to diagnosis code 414.02 (Coronary atherosclerosis of autologous vein bypass graft) and diagnosis code 414.03 (Coronary atherosclerosis of nonautologous biological bypass graft).

Response: Our medical advisors do not agree with the commenter. According to our medical advisors, diagnosis code 414.4 is similar to code 414.01 (Coronary atherosclerosis of native coronary artery) which is not designated as a CC. Both codes indicate general atherosclerosis and are not similar to codes 414.02 and 414.03, which indicate atherosclerosis of an artery that has been replaced by graft. Therefore, we are not making any modifications to the proposed non-CC designation for code 414.4.

Comment: One commenter supported the CC designation for the following diagnosis codes: 425.11(Hypertrophic obstructive cardiomyopathy); 425.18 (Other hypertrophic cardiomyopathy); 512.2 (Postoperative air leak); 512.81 (Primary spontaneous pneumothorax); 512.82 (Secondary spontaneous pneumothorax); 512.83 (Chronic pneumothorax); 512.84 (Other air leak); 512.89 (Other pneumothorax); 516.35 (Idiopathic lymphoid interstitial pneumonia); 516.36 (Cryptogenic organizing pneumonia); and 516.37 (Desquamative interstitial pneumonia). Some commenters supported the CC designations for code 998.00 (Postoperative shock, unspecified).

One commenter representing a national medical specialty society for neurology supported our proposed CC designations for codes 358.30 (Lambert-Eaton syndrome, unspecified); 358.31 (Lambert-Eaton syndrome in neoplastic disease); and 358.39 (Lambert-Eaton syndrome in other diseases classified elsewhere). The commenter stated that Lambert-Eaton syndrome is increasingly diagnosed and not always a paraneoplastic syndrome.

One commenter supported the CC designation for code 348.82 (Brain death), while another commenter did not support this proposed designation. The commenter that did not support the proposal stated that this code should be designated as an MCC.

Response: Our medical advisors agree with the commenter that code 348.82 should be designated as a MCC because this diagnosis requires extensive intensive care resources. Therefore, in this final rule, we are amending the proposed CC designation of code 348.82 (Brain death) to MCC for FY 2012 in Table 6A. This change is reflected in Table 6A in this final rule which is available via the Internet on the CMS Web site.

Comment: One commenter did not support the CC designation for code 516.30 (Idiopathic interstitial pneumonia, not other specified). The commenter did not see the differences among codes 516.30, 516.31 (Idiopathis pulmonary fibrosis), and 516.32 (Idiopathic nonspecific interstitial pneumonitis), recognizing that the nonspecific code is designated as a CC while the more specific codes are not designated as CCs.

Response: We agree with the commenter that code 516.30 should not be designated as a CC because this code identifies an unspecified pneumonia which is more reflective of a non-CC. Therefore, in this final rule, we are amending the proposed CC designation for of code 516.30 (Idiopathic interstitial pneumonia, not other specified) to non-CC for FY 2012 in Table 6A. This change is reflected in Table 6A, which, for this final rule, is available via the Internet on the CMS Web site.

Comment: Several commenters supported the MCC designation for the following diagnosis codes: 284.11 (Antineoplastic chemotherapy induced pancytopenia); 284.12 (Other drug induced pancytopenia); 488.81(Influenza due to identified novel influenza A virus with pneumonia); 998.01 (Postoperative shock, cardiogenic); 998.02 (Postoperative shock, septic); and 998.09 (Postoperative shock, other). In addition, one commenter supported the MCC designation for the following diagnosis codes: 518.51 (Acute respiratory failure following trauma and surgery); 518.52 (Other pulmonary insufficiency, not elsewhere classified); Start Printed Page 51551and 518.53 (Acute and chronic respiratory failure following trauma and surgery).

Response: We appreciate the commenters' support.

Comment: One commenter representing a national organization for orthopedic surgeons did not support the proposed MCC designation for diagnosis code 415.13 (Saddle embolus of pulmonary artery). The commenter stated that this designation is clinically inaccurate as a saddle embolus is a subcategory of deep vein thrombosis/pulmonary embolism.

Response: Our medical advisors do not agree with the commenter's assessment that this diagnosis code does not warrant an MCC designation. The diagnosis of saddle embolus is life-threatening, requiring intensive care resources. Therefore, we are not making any modifications to the proposed MCC designation for code 415.13. We point out that diagnosis codes 415.11 (Iatrogenic pulmonary embolism and infarction), 415.12 (Septic pulmonary embolism) and 415.19 (Other Pulmonary embolism and infarction) are designated as MCCs.

Comment: One commenter suggested that, as new codes are added to the MS-DRG classification, the new codes be assigned to the same MS-DRG classification as its predecessor code.

Response: CMS' longstanding practice has been, where possible, to assign new ICD-9-CM codes to the same MS-DRGs(s) as their predecessor code.

Comment: One commenter supported the proposed MS-DRG assignment to MS-DRG 264 (Other Circulatory System O.R. Procedures) for procedure code 38.26 (Insertion of implantable pressure sensor without lead for intracardiac or great vessel hemodynamic monitoring). Another commenter supported the surgical classification of procedure code 68.24 (Uterine artery embolization [UAE] with coils) and code 68.25 (Uterine artery embolization [UAE] without coils).

Response: We appreciate the support of the commenters.

For codes that have been replaced by new or expanded codes, the corresponding new or expanded diagnosis codes are included in Table 6A, which is listed in section VI. of the Addendum to this final rule and available via the Internet. New procedure codes are shown in Table 6B, which is listed in section VI. of the Addendum to this final rule and available via the Internet. Diagnosis codes that have been replaced by expanded codes or other codes or have been deleted are in Table 6C (Invalid Diagnosis Codes), which is listed in section VI. of the Addendum to this final rule and available via the Internet. These invalid diagnosis codes will not be recognized by the GROUPER beginning with discharges occurring on or after October 1, 2011. Table 6D, which is listed in section VI. of the Addendum to this final rule and available via the Internet, contains invalid procedure codes. These invalid procedure codes will not be recognized by the GROUPER beginning with discharges occurring on or after October 1, 2011. Revisions to diagnosis code titles are in Table 6E (Revised Diagnosis Code Titles), which is listed in section VI. of the Addendum to this final rule and available via the Internet, and also includes the MS-DRG assignments for these revised codes. Table 6F, which is listed in section VI. of the Addendum to this final rule and available via the Internet includes revised procedure code titles for FY 2012.

In the September 7, 2001 final rule implementing the IPPS new technology add-on payments (66 FR 46906), we indicated we would attempt to include proposals for procedure codes that would describe new technology discussed and approved at the Spring meeting as part of the code revisions effective the following October. As stated previously, ICD-9-CM codes discussed at the March 9-10, 2011 Committee meeting that received consensus and that were finalized by May 2011 are included in Tables 6A through 6F, which are listed in section VI. of the Addendum to this final rule and available via the Internet.

Section 503(a) of Public Law 108-173 included a requirement for updating ICD-9-CM codes twice a year instead of a single update on October 1 of each year. This requirement was included as part of the amendments to the Act relating to recognition of new technology under the IPPS. Section 503(a) amended section 1886(d)(5)(K) of the Act by adding a clause (vii) which states that the “Secretary shall provide for the addition of new diagnosis and procedure codes on April 1 of each year, but the addition of such codes shall not require the Secretary to adjust the payment (or diagnosis-related group classification) * * * until the fiscal year that begins after such date.” This requirement improves the recognition of new technologies under the IPPS system by providing information on these new technologies at an earlier date. Data will be available 6 months earlier than would be possible with updates occurring only once a year on October 1.

While section 1886(d)(5)(K)(vii) of the Act states that the addition of new diagnosis and procedure codes on April 1 of each year shall not require the Secretary to adjust the payment, or DRG classification, under section 1886(d) of the Act until the fiscal year that begins after such date, we have to update the DRG software and other systems in order to recognize and accept the new codes. We also publicize the code changes and the need for a mid-year systems update by providers to identify the new codes. Hospitals also have to obtain the new code books and encoder updates, and make other system changes in order to identify and report the new codes.

The ICD-9-CM Coordination and Maintenance Committee holds its meetings in the spring and fall in order to update the codes and the applicable payment and reporting systems by October 1 of each year. Items are placed on the agenda for the ICD-9-CM Coordination and Maintenance Committee meeting if the request is received at least 2 months prior to the meeting. This requirement allows time for staff to review and research the coding issues and prepare material for discussion at the meeting. It also allows time for the topic to be publicized in meeting announcements in the Federal Register as well as on the CMS Web site. The public decides whether or not to attend the meeting based on the topics listed on the agenda. Final decisions on code title revisions are currently made by March 1 so that these titles can be included in the IPPS proposed rule. A complete addendum describing details of all changes to ICD-9-CM, both tabular and index, is published on the CMS and NCHS Web sites in May of each year. Publishers of coding books and software use this information to modify their products that are used by health care providers. This 5-month time period has proved to be necessary for hospitals and other providers to update their systems.

A discussion of this timeline and the need for changes are included in the December 4-5, 2005 ICD-9-CM Coordination and Maintenance Committee minutes. The public agreed that there was a need to hold the fall meetings earlier, in September or October, in order to meet the new implementation dates. The public provided comment that additional time would be needed to update hospital systems and obtain new code books and coding software. There was considerable concern expressed about the impact this new April update would have on providers.

In the FY 2005 IPPS final rule, we implemented section 1886(d)(5)(K)(vii) of the Act, as added by section 503(a) Start Printed Page 51552of Public Law 108-173, by developing a mechanism for approving, in time for the April update, diagnosis and procedure code revisions needed to describe new technologies and medical services for purposes of the new technology add-on payment process. We also established the following process for making these determinations. Topics considered during the Fall ICD-9-CM Coordination and Maintenance Committee meeting are considered for an April 1 update if a strong and convincing case is made by the requester at the Committee's public meeting. The request must identify the reason why a new code is needed in April for purposes of the new technology process. The participants at the meeting and those reviewing the Committee meeting summary report are provided the opportunity to comment on this expedited request. All other topics are considered for the October 1 update. Participants at the Committee meeting are encouraged to comment on all such requests. There were no requests approved for an expedited April l, 2011 implementation of an ICD-9-CM code at the September 15-16, 2010 Committee meeting. Therefore, there were no new ICD-9-CM codes implemented on April 1, 2011.

Current addendum and code title information is published on the CMS Web site at: http://www.cms.hhs.gov/​icd9ProviderDiagnosticCodes/​01_​overview.asp#TopofPage. Information on ICD-9-CM diagnosis codes, along with the Official ICD-9-CM Coding Guidelines, can be found on the Web site at: http://www.cdc.gov/​nchs/​icd9.htm. Information on new, revised, and deleted ICD-9-CM codes is also provided to the AHA for publication in the Coding Clinic for ICD-9-CM. AHA also distributes information to publishers and software vendors.

CMS also sends copies of all ICD-9-CM coding changes to its Medicare contractors for use in updating their systems and providing education to providers.

These same means of disseminating information on new, revised, and deleted ICD-9-CM codes will be used to notify providers, publishers, software vendors, contractors, and others of any changes to the ICD-9-CM codes that are implemented in April. The code titles are adopted as part of the ICD-9-CM Coordination and Maintenance Committee process. Thus, although we publish the code titles in the IPPS proposed and final rules, they are not subject to comment in the proposed or final rules. We will continue to publish the October code updates in this manner within the IPPS proposed and final rules. For codes that are implemented in April, we will assign the new procedure code to the same MS-DRG in which its predecessor code was assigned so there will be no MS-DRG impact as far as MS-DRG assignment. Any midyear coding updates will be available through the Web sites indicated above and through the Coding Clinic for ICD-9-CM. Publishers and software vendors currently obtain code changes through these sources in order to update their code books and software systems. We will strive to have the April 1 updates available through these Web sites 5 months prior to implementation (that is, early November of the previous year), as is the case for the October 1 updates.

b. Code Freeze

The International Classification of Diseases, 10th Revision (ICD-10) coding system applicable to hospital inpatient services will be implemented on October 1, 2013, as described in the Health Insurance Portability and Accountability Act (HIPAA) Administrative Simplification: Modifications to Medical Data code Set Standards to Adopt ICD-10-CM and ICD-10-PCS final rule (74 FR 3328 through 3362, January 16, 2009). The ICD-10 coding system includes the International Classification of Diseases, 10th Revision, Clinical Modification (ICD-10-CM) for diagnosis coding and the International Classification of Diseases, 10th Revision, Procedure Coding System (ICD-10-PCS) for inpatient hospital procedure coding, as well as the Official ICD-10-CM and ICM-10-PCS Guidelines for Coding and Reporting. In the January 16, 2009 ICD-10-CM and ICD-10-PCS final rule (74 FR 3328 through 3362), there was a discussion of the need for a partial or total freeze in the annual updates to both ICD-9-CM and ICD-10-CM and ICD-10-PCS codes. The public comment addressed in that final rule stated that the annual code set updates should cease l year prior to the implementation of ICD-10. The commenters stated that this freeze of code updates would allow for instructional and/or coding software programs to be designed and purchased early, without concern that an upgrade would take place immediately before the compliance date, necessitating additional updates and purchases.

We responded to comments in the ICD-10 final rule that the ICD-9-CM Coordination and Maintenance Committee has jurisdiction over any action impacting the ICD-9-CM and ICD-10 code sets. Therefore, we indicated that the issue of consideration of a moratorium on updates to the ICD-9-CM, ICD-10-CM, and ICD-10-PCS code sets in anticipation of the adoption of ICD-10-CM and ICD-10-PCS would be addressed through the Committee at a future public meeting.

The code freeze was discussed at multiple meetings of the ICD-9-CM Coordination and Maintenance Committee and public comment was actively solicited. The Committee evaluated all comments from participants attending the Committee meetings as well as written comments that were received. There was an announcement at the September 15-16, 2010 ICD-9-CM Coordination and Maintenance Committee meeting that a partial freeze of both ICD-9-CM and ICD-10 codes would be implemented as follows:

  • The last regular annual update to both ICD-9-CM and ICD-10 code sets will be made on October 1, 2011.
  • On October 1, 2012, there will be only limited code updates to both ICD-9-CM and ICD-10 code sets to capture new technology and new diseases.
  • There will be no updates to ICD-9-CM on October 1, 2013, as the system will no longer be a HIPAA standard. There will be only limited code updates to ICD-10 code sets on October 1, 2013, to capture new technology and new diseases.
  • On October 1, 2014, regular updates to ICD-10 will begin.

The ICD-9-CM Coordination and Maintenance Committee announced that it would continue to meet twice a year during the freeze. At these meetings, the public will be encouraged to comment on whether or not requests for new diagnosis and procedure codes should be created based on the need to capture new technology and new diseases. Any code requests that do not meet the criteria will be evaluated for implementation within ICD-10 on or after October 1, 2014, once the partial freeze is ended.

Complete information on the partial code freeze and discussions of the issues at the Committee meetings can be found on the ICD-9-CM Coordination and Maintenance Committee Web site at: http://www.cms.gov/​ICD9ProviderDiagnosticCodes/​03. A summary of the September 15-16, 2010 Committee meeting, along with both written and audio transcripts of this meeting, are posted on the “Download” section of this Web page.

Comment: Several commenters supported the partial code freeze. The commenters stated that the partial freeze was needed to allow providers time to prepare for the implementation of ICD-Start Printed Page 5155310 and the accompanying system and product updates.

Response: We appreciate the commenters' support. We agree with the commenters that the partial code freeze will be useful in providing a greater opportunity to focus on ICD-10 implementation issues.

c. Processing of 25 Diagnosis Codes and 25 Procedure Codes on Hospital Inpatient Claims

In the FY 2011 IPPS/LTCH PPS final rule (75 FR 50127), we discussed that we had received repeated requests from the hospital community to process all 25 diagnosis codes and 25 procedure codes submitted on electronic hospital inpatient claims. Prior to January 1, 2011, hospitals could submit up to 25 diagnoses and 25 procedures; however, CMS' system limitations allowed for the processing of only the first 9 diagnoses and 6 procedures. We indicated in that final rule that, as part of our efforts to update Medicare systems prior to the implementation of ICD-10 on October 1, 2013, we were undergoing extensive system updates as part of the move to 5010, which includes the ability to accept ICD-10 codes. This complicated transition involved converting many internal systems prior to October 1, 2013, when ICD-10 will be implemented. We stated that, as one important step in this planned conversion process, we were planning to complete the expansion of our internal system capability so that we are able to process up to 25 diagnoses and 25 procedures on hospital inpatient claims as part of the HIPAA ASC X12 Technical Reports Type 3, Version 005010 (Version 5010) standards system update. We have completed this expansion, and, as a result, we were able to process up to 25 diagnosis codes and 25 procedure codes when received on the 5010 format starting on January 1, 2011. (We note that we made a typographical error in the proposed rule (76 FR 25843) and indicated that “we have not completed this expansion.” This error was pointed out to us by several commenters. We corrected this typographical error in a correction notice issued in the Federal Register on June 14, 2011 (76 FR 24633).) We continue to recognize the value of the additional information provided by this coded data for multiple uses such as for payment, quality measures, outcome analysis, and other important uses. We will continue to process up to 25 diagnosis codes and 25 procedure codes when received on the 5010 format.

d. ICD-10 MS-DRGs

In response to the FY 2011 IPPS/LTCH PPS proposed rule, we received comments on the creation of the ICD-10 version of the MS-DRGs, which will be implemented on October 1, 2013 (FY 2014) when we implement the reporting of ICD-10 codes (75 FR 50127 and 50128). While we did not propose an ICD-10 version of the MS-DRGs in the FY 2011 IPPS/LTCH PPS proposed rule, we noted that we have been actively involved in converting our current MS-DRGs from ICD-9-CM codes to ICD-10 codes and sharing this information through the ICD-9-CM Coordination and Maintenance Committee. We undertook this early conversion project to assist other payers and providers in understanding how to go about their own conversion projects. We posted ICD-10 MS-DRGs based on V26.0 (FY 2009) of the MS-DRGs. We also posted a paper that describes how CMS went about completing this project and suggestions for others to follow. All of this information can be found on the CMS Web site at: http://www.cms.gov/​ICD10/​17_​ICD10_​MS_​DRG_​Conversion_​Project.asp. We have continued to keep the public updated on our maintenance efforts for ICD-10-CM and ICD-10-PCS coding systems as well as the General Equivalence Mappings that assist in conversion through the ICD-9-CM Coordination and Maintenance Committee. Information on these committee meetings can be found at: http://www.cms.gov/​ICD9ProviderDiagnosticCodes/​03_​meetings.asp.

During FY 2011, we developed and posted Version 28.0 of the ICD-10 MS-DRGs based on the FY 2011 MS-DRGs (Version 28.0) that we finalized in the FY 2011 IPPS/LTCH PPS final rule on the CMS Web site. This ICD-10 MS-DRG Version 28.0 also includes the CC Exclusion List and the ICD-10 version of the hospital acquired conditions (HACs), which was not posted with Version 26.0. We also discussed this update at the September 15-16, 2010 and the March 9-10, 2011 meetings of the ICD-9-CM Coordination and Maintenance Committee. The minutes of these two meetings are posted on the CMS Web site at: http://www.cms.gov/​ICD9ProviderDiagnosticCodes/​03_​meetings.asp. We will continue to work with the public to explain how we are approaching the conversion of MS-DRGs to ICD-10 and will post drafts of updates as they are developed for public review. The final version of the ICD-10 MS-DRGs to be implemented in FY 2014 will be subject to notice and comment rulemaking. In the meantime, we will provide extensive and detailed information on this activity through the ICD-9-CM Coordination and Maintenance Committee.

14. Other Issues

a. O.R./Non-O.R. Status of Procedures

(1) Brachytherapy Code

We received a request that we add ICD-9-CM procedure code 92.27 (Implantation or Insertion of Radioactive Elements) [Brachytherapy] into 41 MS-DRGs that are listed below:

  • 129 (Major Head and Neck Procedures with CC/MCC or Major Device)
  • 130 (Major Head and Neck Procedures without CC/MCC)
  • 163 (Major Chest Procedures with MCC)
  • 164 (Major Chest Procedures with CC)
  • 165 (Major Chest Procedures without CC/MCC)
  • 180 (Respiratory Neoplasms with MCC)
  • 181 (Respiratory Neoplasms with CC)
  • 182 (Respiratory Neoplasms without CC/MCC)
  • 326 (Stomach, Esophageal and Duodenal Procedures with MCC)
  • 327 (Stomach, Esophageal and Duodenal Procedures with CC)
  • 328 (Stomach, Esophageal and Duodenal Procedures without CC/MCC)
  • 329 (Major Small and Large Bowel Procedures with MCC)
  • 330 (Major Small and Large Bowel Procedures with CC)
  • 331 (Major Small and Large Bowel Procedures without CC/MCC)
  • 332 (Rectal Resection with MCC)
  • 333 (Rectal Resection with CC)
  • 334 (Rectal Resection without CC/MCC)
  • 344 (Minor Small and Large Bowel Procedures with MCC)
  • 345 (Minor Small and Large Bowel Procedures with CC)
  • 346 (Minor Small and Large Bowel Procedures without CC/MCC)
  • 347 (Anal and Stomal Procedures with MCC)
  • 348 (Anal and Stomal Procedures with CC)
  • 349 (Anal and Stomal Procedures without CC/MCC)
  • 405 (Pancreas, Liver and Shunt Procedures with MCC)
  • 406 (Pancreas, Liver and Shunt Procedures with CC)
  • 407 (Pancreas, Liver and Shunt Procedures without CC/MCC)
  • 490 (Back and Neck Procedures Except Spinal Fusion with CC/MCC or Disc Device/Neurostimulator)
  • 491 (Back and Neck Procedures Except Spinal Fusion without CC/MCC)Start Printed Page 51554
  • 500 (Soft Tissue procedures with MCC)
  • 501 (Soft Tissue procedures with CC)
  • 502 (Soft Tissue procedures without CC/MCC)
  • 584 (Breast Biopsy, Local Excision and Other Breast Procedures with CC/MCC)
  • 585 (Breast Biopsy, Local Excision and Other Breast Procedures without CC/MCC)
  • 597 (Malignant Breast Disorders with MCC)
  • 598 (Malignant Breast Disorders with CC)
  • 599 (Malignant Breast Disorders without CC/MCC)
  • 653 (Major Bladder Procedures with MCC)
  • 654 (Major Bladder Procedures with CC)
  • 655 (Major Bladder Procedures without CC/MCC)
  • 656 (Kidney and Ureter Procedures for Neoplasm with MCC)
  • 657 (Kidney and Ureter Procedures for Neoplasm with CC)
  • 658 (Kidney and Ureter Procedures for Neoplasm without CC/MCC)
  • 662 (Minor Bladder Procedures with MCC)
  • 663 (Minor Bladder Procedures with CC)
  • 664 (Minor Bladder Procedures without CC/MCC)
  • 668 (Transurethral Procedures with MCC)
  • 669 (Transurethral Procedures with CC)
  • 670 (Transurethral Procedures without CC/MCC)
  • 671 (Urethral Procedures with CC/MCC)
  • 672 (Urethral Procedures without CC/MCC)
  • 707 (Major Male Pelvic Procedures with CC/MCC)
  • 708 (Major Male Pelvic Procedures without CC/MCC)
  • 736 (Uterine and Adnexa Procedures for Ovarian or Adnexal Malignancy with MCC)
  • 737 (Uterine and Adnexa Procedures for Ovarian or Adnexal Malignancy with CC)
  • 738 (Uterine and Adnexa Procedures for Ovarian or Adnexal Malignancy without CC/MCC)
  • 739 (Uterine and Adnexa Procedures for Nonovarian or Adnexal Malignancy with MCC)
  • 740 (Uterine and Adnexa Procedures for Nonovarian or Adnexal Malignancy with CC)
  • 741 (Uterine and Adnexa Procedures for Nonovarian or Adnexal Malignancy without CC/MCC)
  • 746 (Vagina, Cervix and Vulva Procedures with CC/MCC)
  • 747 (Vagina Cervix and Vulva Procedures without CC/MCC)
  • 748 (Female Reproductive System Reconstructive Procedures)
  • 749 (Other Female Reproductive System O.R. Procedures with CC/MCC)
  • 750 (Other Female Reproductive System O.R. Procedures without CC/MCC)

For the FY 2012 IPPS/LTCH PPS proposed rule, we examined MedPAR claims data on this request and only found 150 cases throughout these MS-DRGs. Our findings are presented in the table below.

MS-DRG with Code 92.27MS-DRG without Code 92.27
DRGNumber of casesAverage length of stayAverage costsNumber of casesAverage length of stayAverage costs
12966.67$15,7931,3265.35$14,400
13021.007,5879042.787,860
163178.1824,16611,87113.9031,860
164525.9417,50516,4877.1316,865
165412.9510,6389,2604.2711,754
18000019,3047.3711,396
18100022,2055.308,014
1820002,3653.595,580
32600010,32115.4835,437
32714.009,3029,6718.6717,889
3280008,4613.499,161
329124.0037,65441,10715.1033,003
33029.0020,04353,5848.9116,736
33100022,1055.1310,654
332148.0061,1691,43913.4029,727
333110.0011,4464,4947.8616,008
334116.0027,3122,8554.7610,518
34400075611.3021,590
3450002,9066.6711,190
3460002,3314.527,757
3470001,4308.8016,644
3480003,9755.409,326
3490003,5122.755,311
40518.008,4443,94015.4535,970
406210.5023,2314,7497.8317,333
4070001,7998.0412,148
49000019,8404.2411,940
49100038,5742.056,794
5000001,93510.8620,600
50157.0012,8964,9615.7710,256
50257.4013,8765,0092.786,844
5840007905.3211,126
5850001,3182.127,283
5970005327.4110,990
5980001,3695.327,624
5990001653.264,368
6531,58916.3435,856
6543,5029.1319,367
6550001,1215.53413,162
Start Printed Page 51555
656120.0077,7373,11010.0024,022
6570007,8855.6313,345
6580006,1503.259,718
66200076310.2119,455
6630001,8182.189,729
6640002,7051.867,457
66823.503,9722,9088.9916,852
66946.507,83213,7764.258,398
67021.505,6397,3212.245,158
6710007465.459,778
6720006132.315,575
7070004,7194.2612,080
70813.0011,25214,3291.808,572
73600077513.1829,827
73716.0013,0452,8446.4913,348
7380006423.477,966
73900079010.1823,070
7400003,9144.3410,214
74111.003,2254,9172.317,438
7460002,2823.978,504
7470006,2431.725,995
74800014,6821.676,285
7490009208.5816,781
7500002852.887,116

The numbers of cases in any of the MS-DRGs listed were minimal. Many of the MS-DRGs listed had no occurrences of procedure code 92.27. The highest number of cases found was 52, in MS-DRG 164 (Major Chest Procedures with CC). Based on these findings, we do not believe that making a MS-DRG change based on such a minimal number of cases can be justified. Therefore, for FY 2012, we did not propose to add procedure code 92.27 to any of the 41 MS-DRGs listed above. Further, we did not propose any MS-DRG changes for procedure code 92.27. We welcomed public comment on our proposal not to make changes to procedure code 92.27.

Comment: Several commenters supported our proposal to not add procedure code 92.27 to any of the 41 MS-DRGs listed above and to not propose any MS-DRG changes for procedure code 92.27.

Response: We appreciate the commenters' support.

After consideration of the public comments we received, as we proposed, we are not adding procedure code 92.27 to any of the 41 MS-DRGs listed above and are not making any MS-DRG changes for procedure code 92.27 for FY 2012.

(2) Intraoperative Electron Radiation Therapy (IOERT)

We received a public comment that was outside of the scope of the FY 2011 IPPS/LTCH PPS proposed rule regarding the MS-DRG assignment for intraoperative electron radiation therapy (IOERT). This issue was discussed briefly in the FY 2011 IPPS/LTCH PPS final rule (75 FR 50128). However, we addressed this issue in the FY 2012 IPPS/LTCH PPS rulemaking. IOERT is the direct application of radiation to a tumor and/or tumor bed while the patient is undergoing surgery for cancer. This technology may be used for cancers of the rectum, head/neck, pancreas, lung, genitourinary, soft tissue, and breast. IOERT is a secondary procedure performed during the primary tumor removal surgery.

The commenter requested that CMS update the MS-DRG assignments for procedure code 92.41 (Intraoperative electron radiation therapy) to ensure that the cost of this technology is captured in each MS-DRG involving tumor removal in the rectum, head/neck, pancreas, lung, genitourinary, soft tissue, and breast. Currently, this code is not assigned to a specific MS-DRG as the primary procedure performed, the tumor removal, would determine the appropriate MS-DRG assignment.

The commenter provided a recommended list of MS-DRGs to which IOERT should be assigned:

MS-DRGDescription
129Major Head and Neck Procedures with CC/MCC or Major Device.
130Major Head and Neck Procedures without CC/MCC.
133Other Ear, Nose, Mouth and Throat O,R, Procedures with CC/MCC.
134Other Ear, Nose, Mouth and Throat O.R. Procedures without CC/MCC.
163Major Chest Procedures with MCC.
164Major Chest Procedures with CC.
165Major Chest Procedures without CC/MCC.
166Other Respiratory System O.R. Procedures with MCC.
167Other Respiratory System O.R. Procedures with CC.
168Other Respiratory System O.R. Procedures without CC/MCC.
326Stomach, Esophageal and Duodenal Procedures with MCC.
327Stomach, Esophageal and Duodenal Procedures with CC.
328Stomach, Esophageal and Duodenal Procedures without CC/MCC.
329Major Small and Large Bowel Procedures with MCC.
330Major Small and Large Bowel Procedures with CC.
331Major Small and Large Bowel Procedures without CC/MCC.
332Rectal Resection with MCC.
333Rectal Resection with CC.
334Rectal Resection without CC/MCC.
344Minor Small and Large Bowel Procedures with MCC.
345Minor Small and Large Bowel Procedures with CC.
346Minor Small and Large Bowel Procedures without CC/MCC.
347Anal and Stomal Procedures with MCC.
348Anal and Stomal Procedures with CC.
Start Printed Page 51556
349Anal and Stomal Procedures without CC/MCC.
356Other Digestive System O.R. Procedures with MCC.
357Other Digestive System O.R. Procedures with CC.
358Other Digestive System O.R. Procedures without CC/MCC.
405Pancreas, Liver and Shunt Procedures with MCC.
406Pancreas, Liver and Shunt Procedures with CC.
407Pancreas, Liver and Shunt Procedures without CC/MCC.
490Back and Neck Procedures Except Spinal Fusion with CC/MCC.
491Back and Neck Procedures Except Spinal Fusion without CC/MCC.
500Soft Tissue Procedures with MCC.
501Soft Tissue Procedures with CC.
502Soft Tissue Procedures without CC/MCC.
579Other Skin, Subcutaneous Tissue and Breast Procedures with MCC.
580Other Skin, Subcutaneous Tissue and Breast Procedures with CC.
581Other Skin, Subcutaneous Tissue and Breast Procedures without CC/MCC.
584Breast Biopsy, Local Excision and Other Breast Procedures with CC/MCC.
585Breast Biopsy, Local Excision and Other Breast Procedures without CC/MCC.
653Major Bladder Procedures with MCC.
654Major Bladder Procedures with CC.
655Major Bladder Procedures without CC/MCC.
656Kidney and Ureter Procedures For Neoplasm with MCC.
657Kidney and Ureter Procedures For Neoplasm with CC.
658Kidney and Ureter Procedures for Neoplasm without MCC/CC.
662Minor Bladder Procedures with MCC.
663Minor Bladder Procedures with CC.
664Minor Bladder Procedures without CC/MCC.
668Transurethral Procedures with MCC.
669Transurethral Procedures with CC.
670Transurethral Procedures without CC/MCC.
671Urethral Procedures with CC/MCC.
672Urethral Procedures without CC/MCC.
707Major Male Pelvic Procedures with CC/MCC.
708Major Male Pelvic Procedures without CC/MCC.
715Other Male Reproductive System O.R. Procedures For Malignancy with CC/MCC.
716Other Male Reproductive System O.R. Procedures For Malignancy without CC/MCC.
736Uterine and Adnexa Procedures for Ovarian or Adnexal Malignancy with MCC.
737Uterine and Adnexa Procedures for Ovarian or Adnexal Malignancy with CC.
738Uterine and Adnexa Procedures for Ovarian or Adnexal Malignancy without CC/MCC.
739Uterine and Adnexa Procedures for Nonovarian or Adnexal Malignancy with MCC.
740Uterine and Adnexa Procedures for Nonovarian or Adnexal Malignancy with CC.
741Uterine and Adnexa Procedures for Nonovarian or Adnexal Malignancy without CC/MCC.
746Vagina, Cervix and Vulva Procedures with CC/MCC.
747Vagina Cervix and Vulva Procedures without CC/MCC.
748Female Reproductive System Reconstructive Procedures.
749Other Female Reproductive System O.R. Procedures with CC/MCC.
750Other Female Reproductive System O.R. Procedures without CC/MCC.

For the FY 2012 IPPS/LTCH PPS proposed rule, based on our review of the FY 2010 MedPAR claims data, we found a total of 12 cases with procedure code 92.41 reported. There were three cases assigned to MS-DRG 502; two cases each assigned to two different MS-DRGs: MS-DRG 333 and MS-DRG 501; and one case assigned each to five MS-DRGs: MS-DRGs 130, 168, 327, 329, and 330.

The IOERT cases were assigned to an MS-DRG that included the tumor removal of that particular site, which was listed on the table above. Therefore, the cost of this technology is appropriately identified in the MS-DRG assignment for the removal of the tumor by specific site, and no change is warranted at this time. Therefore, we did not propose any changes to the assignment for IOERT cases for FY 2012. We invited public comment on our proposal to not change the assignment for IOERT cases for FY 2012.

Comment: Several commenters supported our proposal to not make any MS-DRG modifications for FY 2012 for IOERT cases reported with procedure code 92.41.

Response: We appreciate the commenters' support. Based on our findings, these cases are appropriately assigned to the MS-DRG for the removal of the tumor by specific site and warrant no further modification.

After consideration of the public comments we received, we are finalizing our proposal to not make any MS-DRG modifications for FY 2012 for intraoperative electron radiation therapy cases.

b. IPPS Recalled Device Policy Clarification

In the FY 2008 IPPS final rule with comment period (72 FR 47246 through 47251), we discussed the topic of Medicare payment for devices that are replaced without cost or where credit for a replaced device is furnished to the hospital. We implemented a policy to reduce a hospital's IPPS payment for certain MS-DRGs where the implantation of a device that has been recalled determined the base MS-DRG assignment. At that time, we specified that we would reduce a hospital's IPPS payment for those MS-DRGs where the hospital received a credit equal to 50 percent or more of the cost of the device when a manufacturer provided a credit for a recalled device.

A similar policy was adopted under the Hospital Outpatient Prospective Payment System (OPPS) in CY 2008 (the “partial credit” policy). This policy can be viewed in its entirety at 72 FR 66743 though 66748. In general terms, under the partial credit policy, CMS reduces the amount of payment for an implanted device made under the OPPS for which CMS determines that a significant portion of the payment is attributable to the cost of an implanted device when the provider receives partial credit for the cost of a replaced device, but only where the amount of the device credit is greater than or equal to 50 percent of the cost of the new replacement device being implanted.

It came to our attention that there is a discrepancy between the IPPS policy and the OPPS partial credit policy for replacement devices. In particular, the OPPS partial credit policy specifies that the credit must be 50 percent or greater of the cost of the replacement device. However, the IPPS policy does not specify whether the credit should be 50 percent or greater of the replacement device or the original device. We believe that the OPPS partial credit policy and the IPPS policy should be consistent with each other on the issue of whether the 50 percent or more credit is with respect to the replacement device or the original device. Therefore, in the FY 2012 IPPS/LTCH PPS proposed rule, we proposed to clarify the IPPS policy to state that the policy applies where “the hospital received a credit equal to 50 percent or more of the cost of the replacement device.” We invited public comment on this proposal.

Comment: Several commenters approved of parallel policies for recalled Start Printed Page 51557device credit for both the inpatient setting and the outpatient hospital setting.

Response: We appreciate the commenters' support.

Comment: One commenter suggested additional clarifications. The commenter recommended that CMS reconcile condition codes 49 and 50 with the “FB” and “FC” modifiers from OPPS to include devices obtained at reduced or no cost for reasons other than those currently specified in condition codes 49 and 50. Condition code 49 addresses “product replacement within product lifecycle” while condition code 50 covers “product replacement for known recall of a product.” The commenter stated that, as currently defined, these two condition codes do not represent all of the reasons that devices are obtained at reduced or no cost and, therefore, create confusion as to when the device credit policy applies. The commenter added that, by comparison, in OPPS, modifier “FB” covers “devices that are obtained at no cost to the provider” and modifier “FC” covers “partial credit received for replaced device.” Further, the commenter stated, the definitions of the “FB” and “FC” modifiers denote whether the replacement device was obtained at no cost or reduced cost, and generally reflect all situations when the device credit policy would apply. As part of the clarification, the commenter suggested that CMS further explain whether value code “FD” as well as modifiers “FB” and “FC” are for “replacement” devices only.

Response: We are not clear about the clarifications suggested by the commenter. The OPPS modifier “-FB” (Item Provided without Cost to Provider, Supplier or Practitioner) can be used to describe an item provided under warranty, replaced due to defect, or provided as a free sample. OPPS modifier “-FC” (Partial Credit Received for Replaced Device) describes cases in which the hospital receives a partial credit of 50 percent or more of the cost of a new replacement device under warranty, recall, or field action.

Value code “FD” is used for Medicare Part A reporting of replacement devices. Hospitals must use the combination of condition code 49 or 50, described above, along with value code “FD” to correctly bill for a replacement device that was provided with a credit or no cost. Condition code 49 or 50 identifies a replacement device while value code “FD” communicates to Medicare the amount of the credit, or cost reduction, received by the hospital for the replaced device. We do not believe that hospitals find these reporting requirements confusing. Regardless of the actual reason that a device is provided at no cost to a hospital or an ambulatory surgical center (ASC), the end result is that neither the hospital nor the ASC is incurring the full cost of the device, although the Medicare payment is calculated based on the full cost of the device.

Comment: One commenter pointed out that the FY 2009 IPPS/LTCH PPS final rule (73 FR 48496) finalized an MS-DRG change by removing several procedure codes for AICD leads from MS-DRG 245 as well as revising the title of that MS-DRG to read “AICD Generator Procedures”. New MS-DRG 265 (AICD Lead Procedures) was also created and included the AICD lead procedure codes that were transferred from MS-DRG 245. The commenter pointed out that CMS has not issued a new table through its transmittal process indicating that MS-DRG 265 should also be included in the list of MS-DRGs that are subject to the device recall policy.

Response: We are aware of this oversight and have begun the process to create an updated Change Request to address this issue. We expect to issue the Change Request shortly.

Comment: One commenter suggested that no-charge devices should be removed from the calculation of MS-DRG relative weights.

Response: We appreciate this comment, but we point out that no-charge devices are not reported on claims. Therefore, charges for the device have not been included in the computation of the MS-DRG relative weights.

After consideration of the public comments we received, we are finalizing our proposed clarification of the IPPS recalled device policy to state that the policy applies where “the hospital received a credit equal to 50 percent or more of the cost of the replacement device,” and we will issue instructions to hospitals accordingly.

15. Public Comments on Issues Not Addressed in the Proposed Rule

We received a number of public comments regarding MS-DRG issues that were outside the scope of the proposals included in the FY 2012 IPPS/LTCH PPS proposed rule. We have summarized these public comments below. However, because these public comments were outside of the scope of the proposed rule, we are not addressing them in this final rule. As stated in section II.B.2. of this preamble, we encourage individuals with comments about MS-DRG classifications to submit these comments no later than December of each year so they can be considered for possible inclusion in the annual proposed rule and, if included, may be subjected to public review and comment. We will consider these comments for possible proposals in future rulemaking as part of our annual review process.

Commenters requested that CMS create new MS-DRGs for (1) disorders of porphyrin metabolism and (2) related and unrelated allogeneic bone marrow transplants. The commenters also requested that CMS create a new MS-DRG that would distinguish between ventricular assist device (VAD) implantation and heart transplants.

Commenters requested that CMS evaluate the non-CC, CC, or MCC designation of the following codes:

  • 263.0 (Malnutrition of moderate degree)
  • 263.1 (Malnutrition of mild degree)
  • 263.9 (Unspecified protein-calorie malnutrition)
  • 285.3 (Antineoplastic chemotherapy induced anemia)
  • 425.4-425.9 (Cardiomyopathy)
  • 428.0 (Heart failure, unspecified)
  • 707.25 (Pressure ulcer, unstageable)

One commenter recommended that CMS consider the reassignment of cases of patients diagnosed with influenza with pneumonia and who also have secondary diagnoses that would otherwise qualify the assignment of the cases to MS-DRGs 177 (Respiratory Infections and Inflammations with MCC), 178 (Respiratory Infections and Inflammations with CC), and 179 (Respiratory Infections and Inflammations without MCC/CC). The commenter recommended these cases be reassigned from MS-DRGs 193 (Simple Pneumonia and Pleurisy with MCC), 194 (Simple Pneumonia and Pleurisy with CC), and 195 (Simple Pneumonia and Pleurisy without MCC/CC) to MS-DRGs 177, 178, and 179.

H. Recalibration of MS-DRG Weights

In developing the FY 2012 system of weights, we used two data sources: claims data and cost report data. As in previous years, the claims data source is the MedPAR file. This file is based on fully coded diagnostic and procedure data for all Medicare inpatient hospital bills. The FY 2010 MedPAR data used in this final rule include discharges occurring on October 1, 2009, through September 30, 2010, based on bills received by CMS through March 31, 2011, from all hospitals subject to the IPPS and short-term, acute care hospitals in Maryland (which are under a waiver from the IPPS under section 1814(b)(3) of the Act). The FY 2010 Start Printed Page 51558MedPAR file used in calculating the relative weights includes data for approximately 10,836,723 Medicare discharges from IPPS providers. Discharges for Medicare beneficiaries enrolled in a Medicare Advantage managed care plan are excluded from this analysis. These discharges are excluded when the MedPAR “GHO Paid” indicator field on the claim record is equal to “1” or when the MedPAR DRG payment field, which represents the total payment for the claim, is equal to the MedPAR “Indirect Medical Education (IME)” payment field, indicating that the claim was an “IME only” claim submitted by a teaching hospital on behalf of a beneficiary enrolled in a Medicare Advantage managed care plan. In addition, the March 31, 2011 update of the FY 2010 MedPAR was updated to comply with version 5010 of the X12 HIPAA Transaction and Code Set Standards. The expansion of the MedPAR to the 5010 format includes a new variable called “claim type.” Claim type “60” indicates that the claim was an inpatient claim paid as fee-for-service. Claim types of “61,” “62,” “63,” and “64” relate to encounter claims, Medicare Advantage IME claims, and HMO no-pay claims. Therefore, beginning with the calculation of the relative weights for FY 2012, we are also excluding claims with claim type values not equal to “60.” The data exclude CAHs, including hospitals that subsequently became CAHs after the period from which the data were taken. The second data source used in the cost-based relative weighting methodology is the FY 2009 Medicare cost report data files from HCRIS (that is, cost reports beginning on or after October 1, 2008, and before October 1, 2009), which represents the most recent full set of cost report data available. We used the March 31, 2011 update of the HCRIS cost report files for FY 2009 in setting the relative cost-based weights.

The methodology we used to calculate the DRG cost-based relative weights from the FY 2010 MedPAR claims data and FY 2009 Medicare cost report data is as follows:

  • To the extent possible, all the claims were regrouped using the FY 2012 MS-DRG classifications discussed in sections II.B. and G. of the preamble of this final rule.
  • The transplant cases that were used to establish the relative weights for heart and heart-lung, liver and/or intestinal, and lung transplants (MS-DRGs 001, 002, 005, 006, and 007, respectively) were limited to those Medicare-approved transplant centers that have cases in the FY 2010 MedPAR file. (Medicare coverage for heart, heart-lung, liver and/or intestinal, and lung transplants is limited to those facilities that have received approval from CMS as transplant centers.)
  • Organ acquisition costs for kidney, heart, heart-lung, liver, lung, pancreas, and intestinal (or multivisceral organs) transplants continue to be paid on a reasonable cost basis. Because these acquisition costs are paid separately from the prospective payment rate, it is necessary to subtract the acquisition charges from the total charges on each transplant bill that showed acquisition charges before computing the average cost for each MS-DRG and before eliminating statistical outliers.
  • Claims with total charges or total lengths of stay less than or equal to zero were deleted. Claims that had an amount in the total charge field that differed by more than $10.00 from the sum of the routine day charges, intensive care charges, pharmacy charges, special equipment charges, therapy services charges, operating room charges, cardiology charges, laboratory charges, radiology charges, other service charges, labor and delivery charges, inhalation therapy charges, emergency room charges, blood charges, and anesthesia charges were also deleted.
  • At least 96.2 percent of the providers in the MedPAR file had charges for 10 of the 15 cost centers. Claims for providers that did not have charges greater than zero for at least 10 of the 15 cost centers were deleted.
  • Statistical outliers were eliminated by removing all cases that were beyond 3.0 standard deviations from the mean of the log distribution of both the total charges per case and the total charges per day for each MS-DRG.
  • Effective October 1, 2008, because hospital inpatient claims include a POA indicator field for each diagnosis present on the claim, only for purposes of relative weight-setting, the POA indicator field was reset to “Y” for “Yes” for all claims that otherwise have an “N” (No) or a “U” (documentation insufficient to determine if the condition was present at the time of inpatient admission) in the POA field.

Under current payment policy, the presence of specific HAC codes, as indicated by the POA field values, can generate a lower payment for the claim. Specifically, if the particular condition is present on admission (that is, a “Y” indicator is associated with the diagnosis on the claim), it is not a HAC, and the hospital is paid for the higher severity (and, therefore, the higher weighted MS-DRG). If the particular condition is not present on admission (that is, an “N” indicator is associated with the diagnosis on the claim) and there are no other complicating conditions, the DRG GROUPER assigns the claim to a lower severity (and, therefore, the lower weighted MS-DRG) as a penalty for allowing a Medicare inpatient to contract a HAC. While the POA reporting meets policy goals of encouraging quality care and generates program savings, it presents an issue for the relative weight-setting process. Because cases identified as HACs are likely to be more complex than similar cases that are not identified as HACs, the charges associated with HAC cases are likely to be higher as well. Thus, if the higher charges of these HAC claims are grouped into lower severity MS-DRGs prior to the relative weight-setting process, the relative weights of these particular MS-DRGs would become artificially inflated, potentially skewing the relative weights. In addition, we want to protect the integrity of the budget neutrality process by ensuring that, in estimating payments, no increase to the standardized amount occurs as a result of lower overall payments in a previous year that stem from using weights and case-mix that are based on lower severity MS-DRG assignments. If this would occur, the anticipated cost savings from the HAC policy would be lost.

To avoid these problems, we reset the POA indicator field to “Y” only for relative weight-setting purposes for all claims t