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Is case-mix adjustment necessary for an expanded dialysis bundle?

Richard A Hirth1, Robert A Wolfe, John R Wheeler

  • 1University of Michigan, School of Public Health, Department of Health Management and Policy, 109 S. Observatory, Ann Arbor, MI 48109-2029, USA. rhirth@umich.edu

Health Care Financing Review
|November 25, 2003
PubMed
Summary

Medicare payment systems for end-stage renal disease (ESRD) patients should account for patient case mix. Our study shows a significant link between patient complexity and dialysis facility costs, indicating payment adjustments are crucial.

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Area of Science:

  • Health economics
  • Renal medicine
  • Healthcare policy

Background:

  • Medicare is expanding its outpatient prospective payment system (PPS) for dialysis services.
  • This expansion aims to include more drugs and diagnostic procedures for end-stage renal disease (ESRD) patients.
  • A key consideration is whether dialysis facility case mix should influence payment.

Purpose of the Study:

  • To investigate the relationship between patient case mix and costs in dialysis facilities.
  • To inform the implementation of Medicare's expanded PPS for ESRD services.

Main Methods:

  • Utilized fiscal year 2000 cost report data.
  • Analyzed patient billing and clinical data.
  • Examined patient demographic, diagnostic, and clinical characteristics to represent case mix.

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Main Results:

  • Observed significant variability in costs and case mix across dialysis facilities.
  • Identified a substantial relationship between patient case mix and facility costs.
  • Found that case mix adjustment may be important for payment.

Conclusions:

  • Dialysis facility payments should consider patient case mix.
  • The findings support the importance of case mix adjustment in Medicare's PPS for ESRD.
  • Further analysis is warranted to refine payment methodologies.