Medicare helps pay for CPAP therapy when sleep apnea is diagnosed. Here's how the trial period and rental work.
When does Medicare cover a CPAP machine?
Medicare Part B covers a CPAP machine as durable medical equipment after you are diagnosed with obstructive sleep apnea, typically through a sleep study. Medicare first covers a 12-week trial of CPAP therapy. If your doctor documents that the therapy is helping, Medicare continues coverage of the machine and accessories like masks, tubing, and filters. You need a written order and must use a supplier enrolled in Medicare. You also need to use the machine consistently — Medicare and suppliers may track adherence to continue coverage.
How does CPAP rental and cost work in 2026?
Medicare pays the supplier to rent the CPAP machine for 13 months of continuous use, after which you own it. After the $283 Part B deductible (2026), Medicare pays 80% of the monthly rental and supplies, and you pay 20% coinsurance with no cap in Original Medicare. Replacement supplies like masks and tubing are covered on a regular schedule. A Medigap plan can cover that 20% share. Call 1-800-MEDIGAP (1-800-633-4427).
How do you get a CPAP machine through Medicare?
You need a sleep apnea diagnosis (often from a sleep study, which Medicare may also cover), a written order from your doctor, and a Medicare-enrolled supplier that accepts assignment. During the trial, you must use the machine enough to show it is helping. A licensed agent at 1-800-MEDIGAP can explain the trial rules, the replacement-supply schedule, and how a Medigap plan covers your costs.