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Related Experiment Videos

Medicaid prospective payment: case-mix increase.

S L Baker1, J J Kronenfeld

  • 1Department of Health Administration, School of Public Health, University of South Carolina, Columbia 29208.

Health Care Financing Review
|March 5, 1991
PubMed
Summary
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South Carolina Medicaid

Area of Science:

  • Health Economics
  • Healthcare Policy
  • Pediatric Care

Background:

  • South Carolina Medicaid shifted to a prospective payment system using diagnosis-related groups (DRG) for inpatient services.
  • This transition aimed to standardize reimbursement for hospital services.

Purpose of the Study:

  • To evaluate the immediate impact of DRG-based prospective payment on newborn and delivery care within South Carolina Medicaid.
  • To assess changes in complication rates, case-mix index, and overall hospital expenditures.

Main Methods:

  • Analysis of inpatient claims data before and after the implementation of the DRG payment system.
  • Comparison of complication rates, case-mix index, and total expenditures for newborn and delivery services.

Main Results:

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  • A doubling of complication rates for newborns and deliveries was observed immediately post-implementation.
  • The case-mix index for newborns surged by 66.6%, significantly increasing total Medicaid hospital expenditure by 5.5%.
  • Additional increases in expenditure were driven by outlier payments.

Conclusions:

  • DRG payment system implementation led to a substantial increase in newborn complication rates and associated costs.
  • The shift in DRG distribution, particularly towards higher-weighted complication DRGs, significantly impacted healthcare spending.
  • States implementing DRG-based Medicaid payments should expect higher case-mix increases than those seen in Medicare programs.