Short answer: Medicare Part B may cover a CPAP machine, masks, tubing, and related supplies for a person diagnosed with obstructive sleep apnea who meets Medicare’s requirements.
Original Medicare coverage
Medicare may cover an initial 12-week CPAP trial after a qualifying diagnosis of obstructive sleep apnea. Coverage includes the machine and medically necessary accessories. Continued coverage after the trial requires an in-person follow-up with the treating provider and documentation that the person meets Medicare’s conditions and is benefiting from treatment.
A person who used a CPAP machine before joining Medicare may qualify for rental, replacement equipment, or supplies if Medicare’s requirements are met. The provider and supplier must be enrolled in Medicare.
Eligibility and limits
The diagnosis must be supported by a qualifying sleep test ordered by a provider. Medicare covers Type I, II, III, and IV sleep tests when the person has clinical signs and symptoms of sleep apnea. A Type I test must be performed in a sleep laboratory. Use and follow-up requirements apply during the CPAP trial. The supplier may require documentation before refilling masks, cushions, filters, or tubing.
Costs
After the Part B deductible, the beneficiary generally pays 20 percent of the Medicare-approved amount when the supplier accepts assignment. Medicare pays the supplier to rent the CPAP machine for 13 continuous months while coverage conditions remain satisfied. After 13 rental payments, the beneficiary owns the machine. Supplies have separate replacement schedules.
Medicare Advantage
Medicare Advantage plans cover qualifying CPAP therapy but may require a network sleep laboratory, provider, or DME supplier. Prior authorization and cost sharing may differ from Original Medicare.
What to do next
- Confirm that the sleep test and CPAP order meet Medicare requirements.
- Use a Medicare-enrolled DME supplier and ask whether it accepts assignment.
- Schedule the required follow-up during the trial period.
- Ask the supplier for its written replacement schedule for accessories.
Sources
Last reviewed: August 2026. Medicare rules and plan benefits can change.