Does Medicare Cover Sleep Studies?

Yes, Medicare covers sleep studies (polysomnography) and other sleep tests, provided your doctor orders them to diagnose a suspected condition like obstructive sleep apnea. Under Traditional Medicare, Part B covers these tests as an outpatient diagnostic service. You will typically pay 20% of the Medicare-approved amount after you meet your Part B deductible, unless you have a supplemental policy that fills that gap.

To qualify for coverage, you must show clinical signs of sleep apnea, such as chronic snoring, daytime sleepiness, or observed pauses in breathing while you sleep. Your doctor must document these symptoms and officially order the test. Medicare covers both in-lab sleep studies and at-home sleep tests, though the specific type of test approved will depend on your doctor's recommendation and your specific health profile.

If you are diagnosed with sleep apnea following the study, Medicare also covers the necessary equipment to treat it, such as a CPAP (Continuous Positive Airway Pressure) machine and its supplies. This falls under the durable medical equipment (DME) benefit of Part B. Again, you are responsible for the 20% coinsurance and the Part B deductible.

It is important to understand how your Medicare choices impact this coverage. The real choice you make when turning 65 isn't between a dozen different products; it is between two distinct paths: Traditional Medicare (Parts A and B) or Medicare Advantage (Part C).

If you choose the Traditional Medicare path, you can see any doctor or sleep clinic in the country that accepts Medicare. There are no network restrictions, and you don't need prior authorization from an insurance company to get your sleep study done, as long as your doctor orders it. Because Traditional Medicare leaves you with that 20% bill, most people on this path add a Medicare Supplement (Medigap) plan. A Medigap plan fills the gaps by law, meaning it pays the 20% coinsurance for your sleep study and your CPAP equipment.

If you choose the Medicare Advantage path, your sleep study is still covered, but the rules change. You will likely need to use a sleep clinic within the plan's specific network. You may also need to get prior authorization from the insurance company before the test is approved. Your out-of-pocket costs will depend on your specific Advantage plan's copayments for diagnostic tests and durable medical equipment, rather than the standard 20% coinsurance of Traditional Medicare.

Understanding these mechanics ensures you aren't caught off guard by unexpected bills or network restrictions when you need diagnostic care.