Medicare considers CPAP devices to be durable medical equipment and provides 80% coverage under Part B as long as you meet certain conditions. First, your doctor must diagnose you with obstructive sleep apnea following an approved laboratory sleep study or an at-home sleep study, and give you a prescription for a CPAP machine.
Then, Medicare covers a 12-week initial period of CPAP therapy for obstructive sleep apnea, as long as you meet the following requirements:
- You have an hourly AHI between 5 and 14 and a comorbid condition related to obstructive sleep apnea, including hypertension, history of stroke, heart disease, excessive daytime sleepiness, insomnia, mood disorders, and impaired cognition; or
- You have an hourly AHI of 15 or higher.
You must also meet Medicare’s compliance requirements, which state that you must use the machine at least 4 hours per night, 70% of the time or more, during the first 3 months. If you fail to meet these requirements, you have to begin the process again. This involves completing another sleep study, either in a lab or at home, and obtaining another prescription from your doctor.
If the CPAP therapy helps improve your sleep apnea symptoms during the 12-week period, Medicare continues to cover the cost of your CPAP equipment. With Original Medicare coverage, you pay 20% of the machine rental plus the cost of supplies such as the CPAP mask and tubing. Once you meet your Medicare Plan B deductible, Medicare pays for the rental of the machine for 13 months if you use it continually. Once the 13 months have passed, you own the machine.