Medicare long-term CPAP coverage policy: a cost-utility analysis

Area of Science:

• Health economics
• Medical policy analysis
• Sleep medicine

Background:

• Continuous positive airway pressure (CPAP) is a vital treatment for obstructive sleep apnea (OSA).
• Medicare's current reimbursement policy for CPAP therapy mandates a 90-day adherence trial.
• Non-adherence necessitates repeat polysomnograms (PSG) and trials, raising cost-effectiveness concerns.

Purpose of the Study:

• To model and compare the cost-effectiveness of current Medicare CPAP reimbursement policy versus an alternative clinic-only policy.
• To evaluate the impact of adherence criteria on healthcare utilization and costs for OSA patients.
• To determine the most economically viable approach for long-term CPAP therapy coverage.

Main Methods:

• Cost-utility and cost-effectiveness analysis using a decision tree model.
• Modeling focused on the U.S. Medicare population.
• Cost assignment based on 2012 Medicare reimbursement rates; 5-year time horizon analysis.

Main Results:

• The clinic-only policy is less costly than the current Medicare policy.
• Current Medicare policy, despite higher costs, demonstrates higher net adherence and improved quality-adjusted life years (QALY).
• The current Medicare policy costs an additional $30,544 per QALY gained compared to the clinic-only policy.

Conclusions:

• Current Medicare policy effectively identifies patients likely to adhere to CPAP, potentially preventing resource waste.
• The policy's strict adherence standards aim to ensure long-term CPAP use and deny coverage to non-adherent individuals.
• Further research is needed to validate the cost-effectiveness of policy changes regarding long-term adherence in elderly populations.