Medicare covers sleep apnea testing, but only under specific conditions

Yes, Medicare Part B covers sleep apnea testing if your doctor believes you have the condition and orders the test as medically necessary. Medicare will pay for an in-lab sleep study (called a polysomnography) or a home sleep apnea test, depending on what your doctor recommends. However, Medicare does not pay for screening tests — testing done just to check if you might have sleep apnea when you have no symptoms or doctor suspicion. Your doctor must document why they think you have sleep apnea before Medicare will cover the cost.

The amount Medicare pays depends on where you have the test done and which type of test your doctor orders. You will pay your Part B deductible (if you have not met it yet) and then 20% of the Medicare-approved amount for the test itself. If you have a Medigap or Medicare Advantage plan, your out-of-pocket cost may be lower.

Key Takeaways

  • Medicare Part B covers sleep apnea testing only when a doctor orders it because they suspect you have the condition, not for routine screening.
  • Both in-lab sleep studies and home sleep tests are covered, though your doctor decides which type is appropriate for you.
  • You pay your Part B deductible plus 20% of the Medicare-approved cost, unless you have additional coverage through Medigap or Medicare Advantage.
  • If your home sleep test shows you have sleep apnea, Medicare will cover a CPAP machine or other treatment device if your doctor prescribes it.

What counts as medically necessary sleep apnea testing

Medicare requires your doctor to have a clinical reason to order the test. This usually means you have symptoms like loud snoring, witnessed breathing pauses during sleep, daytime sleepiness, or difficulty concentrating. Your doctor documents these symptoms in your medical record before ordering the test. Medicare reviewers may look at your chart to confirm the test was ordered for a real medical reason, not just because you wanted to know if you had the condition.

If you have already been diagnosed with sleep apnea and are being tested to adjust your treatment or check how well your current device is working, that test is also covered. Testing to see if you can stop using a CPAP machine is covered as well. What is not covered is a test ordered without any documented symptoms or clinical reason — for example, a test you request during a routine physical when you have no sleep complaints.

In-lab sleep studies versus home sleep tests

An in-lab sleep study (polysomnography) takes place in a sleep center overnight. Technicians attach sensors to monitor your brain waves, heart rate, breathing, oxygen levels, and leg movements while you sleep. Medicare covers the full cost of the facility, technician time, and interpretation by a sleep specialist. You will pay your Part B deductible and 20% coinsurance. An in-lab study is usually ordered if you have complex medical conditions, are overweight, or if your doctor needs detailed information about your sleep patterns.

A home sleep apnea test is a simpler device you wear at home for one or two nights. It measures breathing, oxygen levels, and heart rate but not brain waves. Medicare covers home tests, and they cost less out of pocket because the facility and technician fees are lower. Your doctor may recommend a home test first if you have no other serious health conditions. If the home test is unclear or shows mild sleep apnea, your doctor may then order an in-lab study for more detail.

What happens after your test results come back

If your test shows you have sleep apnea, your doctor will discuss treatment options with you. The most common treatment is a CPAP machine (continuous positive airway pressure), which delivers air pressure through a mask to keep your airway open while you sleep. Medicare Part B covers CPAP machines, masks, and supplies like tubing and filters. You pay 20% of the Medicare-approved cost after your deductible, and Medicare covers 80%.

Other devices like BiPAP machines (which use two pressure levels) and oral appliances (custom-fitted mouthpieces) are also covered if your doctor prescribes them and documents why that device is medically necessary for you. Your doctor must show that you tried CPAP first or that CPAP is not appropriate for your specific situation. Medicare will not cover a device your doctor straightforward prefers if CPAP would work for you.

Your out-of-pocket costs

Your actual cost depends on whether you have met your Part B deductible for the year. If you have not, you pay the full deductible amount first (the 2024 deductible is $240, though this amount changes yearly). After that, you pay 20% of what Medicare approves for the test. For a home sleep test, your total out-of-pocket cost is usually $50 to $150. For an in-lab study, it is typically $200 to $400, depending on your deductible status and the facility.

If you have a Medigap plan, it may cover your 20% coinsurance, which would lower your cost significantly. If you have a Medicare Advantage plan, your costs depend on your specific plan — some cover sleep testing with a small copay, while others require you to meet a deductible first. Check your plan documents or call your plan's customer service before your test to know your exact cost.

How to make sure Medicare will cover your test

Before scheduling a sleep test, ask your doctor to confirm that Medicare will cover it. Your doctor's office can submit a request to Medicare ahead of time to get approval (called prior authorization). Not all sleep tests require prior authorization, but asking first prevents surprises. If Medicare denies coverage later, you have the right to appeal, and your doctor can provide documentation of why the test was medically necessary.

When you schedule your test, tell the facility or sleep center that you have Medicare. They will verify your coverage and let you know your expected out-of-pocket cost. If you use an in-network provider (one that accepts Medicare), your costs are lower. If you go to an out-of-network provider, Medicare may pay less, and you could owe more.

When to see a doctor about sleep apnea symptoms

Talk to your primary care doctor if you have loud snoring, pauses in breathing during sleep (witnessed by a bed partner), daytime sleepiness that interferes with daily activities, or morning headaches. These are the most common signs that sleep apnea testing might be needed. Your doctor can do an initial evaluation and decide whether a sleep test is the right next step. If your regular doctor is not sure, they can refer you to a sleep specialist.

Sleep apnea is serious — it can increase your risk of heart attack, stroke, and irregular heartbeat if left untreated. If you think you might have it, do not wait. Getting tested and treated can improve your sleep quality, energy level, and overall health. Medicare's coverage of testing and treatment makes it more affordable to get the care you need.

Frequently Asked Questions

Will Medicare cover a sleep test if I do not have symptoms?

No. Medicare only covers sleep testing when your doctor has documented a medical reason — usually symptoms like snoring, witnessed breathing pauses, or daytime sleepiness. Screening tests without symptoms are not covered. If you are concerned about sleep apnea, talk to your doctor about your risk factors, and they can decide if testing is warranted.

Do I need a referral from my primary care doctor to get a sleep test?

You do not need a formal referral, but your primary care doctor must order the test or refer you to a sleep specialist who will. Medicare requires a doctor's order with documented medical reason. You can ask your primary care doctor for a referral to a sleep center if you think you need testing.

What if my home sleep test is inconclusive?

If your home test does not give clear results, your doctor will likely order an in-lab sleep study for more detailed information. Medicare covers the in-lab study in this situation because it is medically necessary to reach a diagnosis. You will pay your regular coinsurance for the second test.

Does Medicare cover CPAP supplies after I am diagnosed?

Yes. Medicare Part B covers the CPAP machine itself, masks, tubing, filters, and other supplies. You pay 20% coinsurance after your deductible. Medicare also covers replacement parts and supplies as needed — typically a new mask every few months and filters regularly. Your doctor must prescribe the equipment for coverage.

Can I use a Medicare Advantage plan instead of Original Medicare for sleep apnea testing?

Yes. Medicare Advantage plans must cover sleep testing and CPAP treatment at least as well as Original Medicare does. However, your out-of-pocket costs, deductibles, and copays vary by plan. Review your plan's coverage details or call customer service to understand your costs before scheduling a test.