Psychiatric DRGs: more risk for hospitals?

Area of Science:

• Health economics
• Psychiatric care
• Healthcare policy

Background:

• Medicare implemented the Diagnosis Related Group (DRG) system in 1983 for prospective medical expense reimbursement, replacing the cost-plus system.
• The DRG system has not yet been applied to psychiatric illnesses.
• This study examines the potential for cost overruns in psychiatric care compared to medical care under a prospective payment system.

Purpose of the Study:

• To compare the likelihood of cost overruns in psychiatric illness versus medical illness.
• To assess the feasibility of applying the Diagnosis Related Group (DRG) system to psychiatric care.
• To identify potential reasons for the failure of a prospective payment system in mental health.

Main Methods:

• Comparative analysis of cost overrun likelihood between psychiatric and medical illnesses.
• Evaluation of factors contributing to cost variations in psychiatric treatments and diagnostics.

Main Results:

• Data analysis indicates a high probability of failure for a prospective payment system in psychiatric illness.
• Significant variations in treatments, diagnostics, and associated costs contribute to this likelihood.
• The current number of DRG classifications for psychiatric conditions is inadequate for a prospective payment system.

Conclusions:

• A prospective payment system, such as the DRG system, is likely to fail in psychiatric care.
• The inherent variability in psychiatric illness and insufficient classification system pose significant challenges.
• Revising the DRG system or developing alternative payment models is necessary for mental health services.