Using CPAP
CPAP Insurance and Medicare Compliance: The 90-Day Rule Explained
If you are in the United States, your insurer will likely check whether you are using your CPAP before it keeps paying. Here is what Medicare requires, how private plans compare, and what happens if you miss the target.
The Medicare adherence rule
Medicare's coverage policy for positive airway pressure covers an initial 12-week trial. To continue coverage, you need to show adherence, defined as using PAP for 4 hours or more per night on 70% of nights during a consecutive 30-day period anytime within the first three months.
In practice that means at least 21 nights of 4 hours or more within some 30-day window. Your machine records usage automatically, and many DMEs monitor it remotely.
The follow-up visit
Medicare also requires a re-evaluation by your treating clinician between day 31 and day 91 after you start therapy. At that visit, the clinician documents that your symptoms have improved and reviews your objective usage data. Make sure this appointment is booked and that your data is shared.
If you do not meet the target
If you do not meet adherence in the first 3 months, Medicare coverage of the trial ends. To requalify, Medicare requires an in-person clinical re-evaluation to find out why therapy failed, and a repeat sleep test in a facility. That is a hassle, so if you are struggling, ask for help early: mask changes, comfort settings and pressure reviews can all be done during the trial.
Rentals and supplies
Medicare typically pays for CPAP machines as a rental over 13 months, after which you own the device, provided you continue to meet coverage requirements. Masks, cushions, tubing and filters are covered on a replacement schedule. Your share of the costs depends on your plan.
Private insurance
Many private insurers use similar compliance rules, often modelled on Medicare's, but details vary. Call your insurer and ask: what usage they require and over what period, whether the machine is rented or purchased, how supplies are covered, and whether they require you to use a specific DME. The AASM's patient site has a useful overview of PAP and insurance.
Privacy and data
Your usage data may be shared with your DME, clinician and insurer. Ask your DME what data is collected and who sees it. Some people find it motivating to know their usage counts.
Frequently asked questions
What is the 90-day CPAP compliance rule?
Medicare requires use of 4 hours or more per night on 70% of nights in any 30 consecutive days during the first 3 months, plus a follow-up visit between day 31 and day 91.
Does 4 hours a night mean I only need to wear it for 4 hours?
No. 4 hours is a coverage minimum. For health benefits, wear CPAP whenever you sleep, all night.
What happens if I fail CPAP compliance?
With Medicare, you would need an in-person re-evaluation and a repeat facility sleep test to requalify. Ask for help early if you are struggling.
Do I own my CPAP machine?
Under Medicare, after 13 months of continuous rental the machine typically becomes yours. Private plans vary.
Sources
This page is general information, not a diagnosis or medical advice. Read our medical disclaimer.