Medicare covers sleep studies, but only when ordered by your doctor for a suspected sleep disorder and performed at an approved facility

Medicare Part B covers the cost of a sleep study if your doctor orders one to diagnose a condition like sleep apnea, narcolepsy, or restless leg syndrome. The study must take place at a Medicare-approved sleep center or hospital. You pay 20% of the approved amount after you meet your Part B deductible; Medicare pays the remaining 80%.

The type of sleep study matters. A polysomnography (in-lab sleep study) is more likely to be covered than a home sleep apnea test, though Medicare does cover some home tests under specific conditions. Your doctor must document the medical reason for the study in your medical record before the test happens — Medicare will not pay for a study ordered after the fact or for general screening if you have no symptoms.

Key Takeaways

  • Your doctor must order the sleep study and document a medical reason, such as suspected sleep apnea or daytime sleepiness that affects your daily life.
  • The study must be performed at a Medicare-approved facility; studies done at non-approved centers or at home without prior approval will not be covered.
  • You pay 20% of the Medicare-approved amount after meeting your Part B deductible; the exact cost depends on your facility and location.
  • Medicare covers both in-lab polysomnography and some home sleep tests, but your doctor and the facility must follow Medicare's rules for the test to be paid.

How to know if your sleep study will be covered

Medicare requires three things before it will pay: a doctor's order, a documented medical reason, and an approved facility. Start by talking to your primary care doctor about your sleep symptoms — difficulty falling asleep, waking frequently, loud snoring, or daytime fatigue that interferes with work or daily tasks. Your doctor will decide whether a sleep study is medically necessary.

If your doctor orders a study, ask which facility they recommend and confirm that facility is Medicare-approved. You can search for approved sleep centers on the Medicare website or call your local Medicare office. Do not schedule a study at a facility without checking first; if the center is not approved, Medicare will not pay, and you could owe the full cost.

Your doctor's office should submit the order to the sleep center before your appointment. The center will verify your Medicare coverage and tell you what you owe. If you have a Medigap or Medicare Advantage plan, your out-of-pocket cost may be lower; call your plan before the study to confirm.

In-lab sleep studies versus home sleep tests

An in-lab polysomnography takes place overnight at a hospital or sleep center. Technicians attach sensors to monitor your brain waves, heart rate, breathing, and leg movements while you sleep. Medicare covers this test when medically necessary, and it is the most thorough way to diagnose sleep disorders. You pay 20% of the approved amount after your deductible.

A home sleep apnea test is simpler: you wear a portable device at home for one or two nights that measures breathing and oxygen levels. Medicare covers home tests only for suspected obstructive sleep apnea, not for other sleep disorders. Your doctor must order it, and the device must come from a Medicare-approved supplier. Home tests cost less out-of-pocket than in-lab studies because the approved amount is lower.

Your doctor chooses which test is right for you based on your symptoms and medical history. If a home test does not give clear results, your doctor may order an in-lab study. Medicare will cover both if medically necessary, but you cannot choose the cheaper option on your own — your doctor's medical judgment determines which test you need.

What happens after the sleep study

A sleep specialist reviews the results and sends a report to your doctor within one to two weeks. Your doctor will discuss the findings with you and explain whether you have a sleep disorder and what treatment options are available. If you have sleep apnea, treatment often starts with a CPAP machine (continuous positive airway pressure), which keeps your airway open while you sleep.

Medicare Part B also covers CPAP machines and supplies if your sleep study shows you have obstructive sleep apnea. You pay 20% of the approved amount after your deductible, just as you do for the study itself. Your doctor will write a prescription, and you will work with a Medicare-approved durable medical equipment supplier to get the machine and learn how to use it.

Costs you should expect

Your out-of-pocket cost depends on whether you have met your Part B deductible for the year. The Part B deductible is set each year by Medicare; in 2024 it is $240, but this amount changes annually. Once you meet the deductible, you pay 20% of the Medicare-approved amount for the sleep study.

The approved amount varies by location and facility type. An in-lab polysomnography typically has an approved amount between $800 and $1,200, meaning you would pay roughly $160 to $240 after your deductible. A home sleep test has a lower approved amount, usually $200 to $400, so your 20% share would be $40 to $80. Call the sleep center or your Medicare plan to ask what the approved amount is for your facility.

If you have a Medigap plan, it may cover your 20% coinsurance, reducing your cost to zero. If you have a Medicare Advantage plan, your copay or coinsurance may be different; check your plan documents or call the plan before your study. If you cannot afford the cost, ask your doctor's office or the sleep center about payment plans.

When Medicare will not pay for a sleep study

Medicare will not pay if your doctor does not order the study or if the facility is not Medicare-approved. It also will not pay if the study is for general screening — for example, if you want to check your sleep quality but have no symptoms or medical reason. Medicare covers diagnosis and treatment of sleep disorders, not wellness testing.

If you have already had a sleep study at a non-approved facility or without a doctor's order, Medicare will not reimburse you. You are responsible for the full bill. This is why it is important to confirm your facility's Medicare status and get your doctor's order in writing before scheduling.

Some sleep centers offer "sleep coaching" or "sleep optimization" services that are not medically necessary. These services are not covered by Medicare. Ask your doctor and the sleep center to clarify what is covered and what you would pay out-of-pocket.

Questions to ask your doctor before scheduling

Ask your doctor why a sleep study is medically necessary for you — what symptoms or test results led to this recommendation. Ask which type of study (in-lab or home) your doctor thinks is best and why. Ask your doctor to confirm the facility is Medicare-approved and to submit the order before you call to schedule.

Ask the sleep center what the Medicare-approved amount is for your study and what you will owe based on your deductible status. Ask whether the center accepts your insurance and whether they can file the claim for you. If you have a Medicare Advantage or Medigap plan, call your plan to ask what your out-of-pocket cost will be.

Frequently Asked Questions

Can I get a sleep study if I do not have symptoms yet?

No. Medicare covers sleep studies only when ordered by your doctor to diagnose a suspected sleep disorder. If you have no symptoms, Medicare considers the study screening rather than diagnosis and will not pay. Talk to your doctor if you are concerned about your sleep.

What if my doctor orders a sleep study but I cancel it?

If you cancel before the study takes place, there is no charge. If you cancel after the study has started or after you arrive at the facility, you may owe a cancellation fee depending on the center's policy. Call the sleep center to ask about their cancellation policy before your appointment.

Will Medicare pay for a second sleep study if the first one was unclear?

Yes, if your doctor orders a second study for a medical reason — for example, if the first test did not produce clear results or if your symptoms have changed. Your doctor must document why a second study is necessary. Medicare will explore the same 80/20 coverage as the first study.

Does Medicare cover sleep studies ordered by a sleep specialist I found on my own?

Yes, as long as the specialist is a Medicare-approved provider and the study is performed at a Medicare-approved facility. You do not need a referral from your primary care doctor, but the specialist must order the study for a medical reason. Check that both the doctor and facility are Medicare-approved before scheduling.

What if I have a Medicare Advantage plan instead of Original Medicare?

Medicare Advantage plans must cover sleep studies the same way Original Medicare does, but your copay or coinsurance may be different. Call your plan to ask what you will owe for an in-lab study or home test at your preferred facility. Some plans require prior approval before the study; ask your plan whether you need approval before scheduling.