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A Risk Adjustment System for the Medicare Capitated ESRD Program

A Risk Adjustment System for the Medicare Capitated ESRD Program. Jesse Levy John Robst Melvin Ingber. Office of Research, Development, and Information Centers for Medicare & Medicaid Services Baltimore, MD. Background.

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A Risk Adjustment System for the Medicare Capitated ESRD Program

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  1. A Risk Adjustment System for the Medicare Capitated ESRD Program

  2. Jesse LevyJohn RobstMelvin Ingber Office of Research, Development, and Information Centers for Medicare & Medicaid Services Baltimore, MD

  3. Background • Medicare is the principal payer for medical services for those with End-Stage Renal Disease. • The Medicare ESRD program has grown rapidly since 1972, increasing from 7,000 enrollees to over 300,000. • The ESRD program now accounts for 9% of Medicare expenditures though serving less than 1% of Medicare beneficiaries.

  4. A small portion is enrolled in Medicare Advantage (MA) plans and ESRD demonstration plans. • MA program payment adjustments for ESRD reflect only beneficiary demographics • The demographic adjustment system cannot differentiate more costly from less costly patients within each of the broad payment cells.

  5. Capitation payments better correlated with patient costs than current payments are needed. • This paper describes the risk adjustment system developed to meet this need.

  6. The CMS ESRD risk adjustment system is based on the CMS-HCC model. The ESRD population divided into three groups by treatment modality. • Dialysis - Model estimated; CMS-HCC specification 2. Transplant - 3 months total Medicare expenditures - kidney-only and kidney-pancreas • Functioning graft - CMS HCC Model plus payment for immunosuppressives

  7. Data • 1999/2000 Medicare data • 100% fee-for-service ESRD beneficiaries • ESRD status of the beneficiary is determined concurrently – a person is switched to the appropriate part of the ESRD payment system upon the occurrence of a triggering event • Medicare costs (annualized) in 2000 • Diagnoses from inpatient, outpatient, and physician claims in 1999 • Risk adjustable, new enrollees, MSP

  8. Dialysis • Average annualized expenditures: $59,003 • R-square: .0767 • Selected coefficients: Female, age 45 39,492 CHF 4440 Diabetes 5628 Vascular disease w/ complications 7747 COPD 3839

  9. Transplant Kidney Kidney + only Pancreas Month 1 33424 50136 Month 2 4523 6785 Month 3 4523 6785 Total 42470 63705

  10. Functioning Graft • Average annualized expenditures: $20,092 • R-square: .2745 • Additional payment: Age lt 65_Duration4-9 15,853 Age ge 65_Duration4-9 17,569 Age lt 65_Duration10+ 8,310 Age ge 65_Duration10+ 8,671

  11. Predictive Ratios Age-sex Risk Dialysis 1.04 1.00 Transplant 0.549 1.00 Functioning graft 2.846 1.00

  12. Example: 2004, Female, age 45, San Diego COPD, CHF, Vascular Disease, Diabetes Risk $ Dem $ Dialysis $6,861 $4,345 Transplant $57,223 $13,035 Functioning $2,869 $4,345 Graft (3 yrs) >3 years $2,869 $504

  13. Conclusion • Overall, the system has been designed to meet the needs of legislation, to minimize extra data collection, and to improve accuracy of payment so that both demonstrations and MA plans can succeed in improving care for this population. If successful, perhaps the restrictions on ESRD enrollment in the general capitated program can be removed.

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