Yes, CPAP machines are covered by most health insurance plans, including Medicare, Medicaid, and private insurers. But coverage almost always comes with conditions: you’ll need a documented sleep apnea diagnosis, and most plans require you to prove you’re actually using the machine before they’ll keep paying for it.
What Insurance Typically Requires
To get a CPAP covered, you need a diagnosis of obstructive sleep apnea confirmed by a sleep study. This can be done at a sleep center or, increasingly, through a home sleep test your doctor orders. The sleep study produces a score called the AHI (apnea-hypopnea index), which measures how many times per hour your breathing stops or becomes dangerously shallow. Most insurers require an AHI of 5 or higher, though some set the bar at 15 or require additional symptoms like daytime sleepiness for scores in the 5 to 14 range.
Many plans also require prior authorization, meaning your doctor’s office submits the sleep study results and a letter of medical necessity before the insurance company approves the equipment. This step can take a few days to a few weeks depending on the insurer. If your plan requires prior authorization and you skip it, you could be stuck paying the full cost yourself.
The Compliance Rule Most People Don’t Expect
Here’s where CPAP coverage differs from most medical equipment: insurers don’t just cover it and walk away. They monitor whether you’re using it, and they can stop paying if you’re not.
The standard set by the Centers for Medicare and Medicaid Services, which most private insurers also follow, requires you to wear your CPAP for at least 4 hours per night on 70% of nights within a 30-day period. In practical terms, that means at least 21 out of 30 consecutive nights. You have the first 90 days after getting your machine to hit this target. Modern CPAP machines track your usage automatically and transmit the data to your equipment supplier, so there’s no self-reporting involved.
If you don’t meet the compliance threshold within that 90-day window, your insurer can refuse to continue covering the machine and its supplies. For Medicare specifically, coverage begins as a 12-week trial. After those 12 weeks, your doctor must document in your medical record that the therapy is helping you and that you’re meeting the usage requirements. Only then does ongoing coverage continue.
How the Rental Model Works
Most insurers, including Medicare, don’t buy you a CPAP machine outright. Instead, they use a “capped rental” model. You rent the machine month to month, typically for 10 to 13 months, and at the end of that period, you own it. During the rental period, your insurer pays a portion of each monthly rental fee, and you pay the rest as your copay or coinsurance.
This is why the compliance requirement matters so much. If you stop using the machine or don’t meet the usage threshold, the insurer stops rental payments, and you may have to return the equipment to the supplier. You’d then need to restart the approval process if you want to try again later.
What You’ll Pay Out of Pocket
The average retail cost of a CPAP machine falls between $500 and $1,000, though the amount billed to insurance can be significantly higher. What you actually pay depends on three things: your annual deductible, your coinsurance or copay rate, and whether your supplier is in-network.
If you haven’t met your yearly deductible, you’ll pay the full negotiated rate for the equipment until you do. After the deductible, most plans cover 70% to 80% of the cost, leaving you responsible for the remaining 20% to 30%. With Medicare Part B, you pay 20% of the Medicare-approved amount after meeting your Part B deductible. Using an in-network durable medical equipment supplier is important because out-of-network suppliers can charge more, and your insurer may cover a smaller share or nothing at all.
Coverage for Supplies and Replacements
A CPAP machine is only part of the ongoing cost. You also need masks, cushions, headgear, tubing, filters, and a water chamber for the humidifier. These wear out and need regular replacement, and insurance covers them on a set schedule.
The typical replacement timeline most insurers follow:
- Mask cushions or nasal pillows: every 1 to 2 months
- Full mask frame: every 3 months
- Headgear and chin straps: every 6 months
- Tubing: every 3 months
- Disposable filters: every 2 weeks to 1 month
- Reusable filters: every 6 months
- Water chamber: every 6 months
For the machine itself, most insurers won’t cover a replacement until 5 years have passed, unless the device malfunctions and can’t be repaired. If your machine breaks during the rental period, the supplier is generally responsible for replacing it. After you own it, warranty coverage or a new insurance authorization would apply.
Medicare vs. Private Insurance vs. Medicaid
Medicare Part B covers CPAP equipment and supplies for obstructive sleep apnea, following the 12-week trial and compliance rules described above. You pay 20% coinsurance after your Part B deductible, and you must use a Medicare-enrolled supplier.
Private insurance plans (through your employer or the marketplace) generally follow similar guidelines but vary in the details. Some have shorter or longer compliance windows, different copay structures, or stricter prior authorization processes. Your plan’s summary of benefits document or a call to member services will give you the specifics.
Medicaid covers CPAP in most states, but the rules differ from state to state. Some state Medicaid programs require the same compliance documentation as Medicare. Others have additional paperwork or limit which suppliers you can use. Medicaid is also considered a “payer of last resort,” meaning if you have any other insurance, that plan must be billed first.
If You’re Denied Coverage
Denials happen, and they’re not always the final word. The most common reasons are incomplete documentation (a missing sleep study report or unsigned order), a home sleep test that didn’t meet the insurer’s diagnostic threshold, or failure to get prior authorization. In many of these cases, your doctor can resubmit with additional information or request a peer-to-peer review with the insurance company’s medical director.
If you’re denied and the appeal process doesn’t work, paying out of pocket is an option. CPAP machines purchased directly from online retailers or discount suppliers often cost $400 to $800, which can be less than what you’d pay through insurance if you have a high deductible. You’ll still need a prescription from your doctor, as CPAP machines are classified as prescription medical devices regardless of how you pay for them.