Inpatient rehabilitation facilities under the prospective payment system: lessons learned

Area of Science:

• Health Economics
• Rehabilitation Medicine
• Healthcare Policy

Background:

• Third-party payers, primarily Medicare, significantly influence rehabilitation care delivery in the US.
• Historically, reimbursement for Inpatient Rehabilitation Facilities (IRFs) was static before the implementation of a new payment system.
• Medicare's Prospective Payment System (IRF-PPS) introduced new regulations and enforcement by intermediaries.

Purpose of the Study:

• To chronicle the history and describe the impact of the IRF-PPS on inpatient rehabilitation facilities.
• To analyze the effects of the IRF-PPS on Medicare costs, facility operations, and patient care patterns.
• To identify strategies for IRFs to adapt to the IRF-PPS and optimize reimbursement.

Main Methods:

• Historical review of the IRF-PPS implementation and regulatory changes.
• Analysis of financial and operational data from IRFs under the IRF-PPS.
• Examination of changes in patient length of stay, case-mix index, and treatment focus.

Main Results:

• The IRF-PPS led to decreased Medicare costs and operating expenses for facilities.
• Significant reductions in the average length of rehabilitation stays were observed.
• There was a notable increase in the case-mix index, indicating a shift towards treating more complex patients.
• IRFs adapted to maximize profits, often by focusing on high-cost, complex cases.

Conclusions:

• The IRF-PPS has driven significant changes in IRF operations, cost structures, and patient populations.
• Facilities must develop sophisticated strategies for accurate documentation of diagnoses, comorbidities, and functional status to optimize reimbursement.
• Further research is needed to identify patient populations that most benefit from IRF care under the current payment system.