Short answer up top, then the exact rule. Here's what Original Medicare does and doesn't cover for a CPAP machine in 2026 — and where a Medicare Advantage plan can fill the gap.
Quick answer: Yes. If you're diagnosed with obstructive sleep apnea, Part B covers a CPAP machine as durable medical equipment — starting with a 12-week trial. After the Part B deductible you pay 20% of the Medicare-approved amount, and Medicare rents the machine for 13 months before it becomes yours.
Medicare Advantage (Part C) plans cover CPAP machines and supplies too, but through their own DME suppliers and cost-sharing rules, often with prior authorization. Use an in-network supplier and confirm the copay before ordering.
Anyone on Medicare newly diagnosed with sleep apnea, or replacing an aging machine or supplies. The main things to get right: a documented OSA diagnosis, sticking with the therapy during the trial, and using a Medicare-enrolled supplier that accepts assignment.
See the current Part A, Part B, and Part D numbers — premiums, deductibles, and the new drug cap — in one place. Free, no signup.
See 2026 Medicare Costs →Medicare covers routine replacement of CPAP accessories (mask, tubing, filters, cushions) on a set schedule when your supplier and doctor document ongoing use — for example, masks and tubing are replaceable every few months, and filters more often. You pay 20% after the Part B deductible.
Yes. If you were previously diagnosed with obstructive sleep apnea and meet Medicare's requirements, Part B can cover a rental or replacement CPAP machine and accessories — even if you had the machine before you got Medicare.
Coverage gaps in Original Medicare — like a CPAP machine — are exactly what a Medicare Advantage or Medigap plan is meant to fill. Our free Enrollment Finder shows the window you can switch in, and the guide library walks through the trade-offs. This page is free to share with anyone weighing their options.
Open the Enrollment Finder →This answer is based on U.S. government Medicare coverage rules: