Does Medicare cover a CPAP machine?
Yes. Original Medicare (Part B) covers CPAP therapy for obstructive sleep apnea, typically starting with a 12-week trial after a qualifying sleep study.
Reviewed by Brad S. · Licensed Florida Health Insurance Agent
Updated June 2026. Written and reviewed by a licensed agent at United Liberty Insurance Agency LLC to ensure accuracy. We cite official sources (HealthCare.gov, CMS, KFF) wherever possible.
What you need to know
- CPAP devices are covered as durable medical equipment (DME) when prescribed for diagnosed obstructive sleep apnea.
- Coverage usually begins with a 12-week trial; continued coverage depends on documented use and benefit.
- You generally pay 20% of the Medicare-approved amount after the Part B deductible, and the supplier must accept assignment.
The official rule
This coverage is governed by Medicare National Coverage Determination NCD 240.4 — “Continuous Positive Airway Pressure (CPAP) Therapy for OSA” (last updated Aug 2023). For the official details and any recent changes, see the Medicare coverage tool at Medicare.gov.
What this means for your wallet
A Medicare Supplement (Medigap) plan can cover much of that 20% coinsurance, and many Medicare Advantage plans bundle DME with predictable copays.
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Related coverage questions
Source: CMS Medicare Coverage Database (National Coverage Determinations) and Medicare.gov. Coverage rules can change and may vary by situation; this page is educational and not a guarantee of coverage. For official determinations, visit Medicare.gov or call 1-800-MEDICARE.