Medicare covers sleep apnea testing, but the test must meet specific medical requirements and be ordered by your doctor

Medicare Part B covers a sleep study (also called a polysomnography or home sleep apnea test) when your doctor documents that you have symptoms of sleep apnea and orders the test as medically necessary. You pay 20% of the Medicare-approved amount after you meet your Part B deductible. The test itself is usually free or low-cost at the facility where you have it done, because Medicare pays the facility directly.

The key requirement is that your doctor must order it. Medicare will not cover a sleep test you arrange on your own, even if you buy it privately. Your doctor needs to document symptoms — such as loud snoring, pauses in breathing during sleep, or daytime sleepiness — in your medical record before the order goes through.

Key Takeaways

  • Your doctor must order the sleep test and document sleep apnea symptoms in your medical record for Medicare to cover it.
  • Medicare covers both in-lab sleep studies and home sleep apnea tests, though your doctor decides which type is appropriate for you.
  • You pay 20% coinsurance of the Medicare-approved amount after meeting your Part B deductible; the facility bills Medicare directly.
  • If your doctor orders a test but Medicare denies it, you can ask your doctor to file an appeal or request a second opinion.

In-Lab Sleep Studies vs. Home Sleep Tests

Medicare covers two types of sleep apnea tests. An in-lab sleep study takes place at a hospital or sleep center overnight. You are connected to sensors that measure your breathing, heart rate, oxygen levels, and sleep stages. A technician monitors you throughout the night. This test is more thorough and is often ordered if your symptoms are severe or if a home test was inconclusive.

A home sleep apnea test is a portable device you wear at home for one or more nights. It measures breathing, oxygen levels, and heart rate but not sleep stages. Medicare covers home tests when your doctor believes you have obstructive sleep apnea and orders the test. Home tests are faster, less expensive for Medicare, and more comfortable for many people, so your doctor may recommend this first.

Your doctor decides which test is right for you based on your symptoms and medical history. Medicare will cover whichever type your doctor orders, as long as the medical reason is documented.

What You Pay Out of Pocket

Your costs depend on whether you have met your Part B deductible for the year. Once you meet the deductible, you pay 20% of the Medicare-approved amount for the sleep test. The exact dollar amount varies by location and the type of test, because Medicare-approved amounts differ by region.

The facility or sleep center will bill Medicare directly. You should receive a bill from them showing what Medicare paid and what you owe. If you have a Medigap or Medicare Advantage plan, your supplemental coverage may pay some or all of your 20% coinsurance, so check your plan documents or call your plan's customer service line.

How to Get Your Doctor to Order a Sleep Test

Start by telling your primary care doctor or a specialist about your symptoms. Common signs of sleep apnea include loud snoring, gasping or choking during sleep (often reported by a bed partner), daytime sleepiness even after a full night's sleep, morning headaches, or trouble concentrating. Write down when these symptoms started and how often they happen.

Your doctor will ask questions about your sleep and may do a brief physical exam. If your doctor thinks sleep apnea is likely, they will order a sleep test and document the reason in your medical record. This documentation is what Medicare uses to determine whether to cover the test. If your doctor is unsure, you can ask for a referral to a sleep specialist, who can evaluate you and order the test if needed.

What Happens if Medicare Denies the Test

Sometimes Medicare denies a sleep test order, usually because the doctor's notes do not clearly document sleep apnea symptoms or because Medicare's medical review process flags the order as not meeting their criteria. If this happens, you have options.

Ask your doctor to file an appeal with Medicare, providing more detailed notes about your symptoms and why the test is medically necessary. Your doctor can also request a peer-to-peer review, where a Medicare medical director speaks directly with your doctor about the case. If the appeal is denied, you can request an independent review outside of Medicare.

Another option is to ask your doctor for a referral to a sleep specialist. A specialist's recommendation often carries more weight with Medicare's review process, and they may order the test with documentation that Medicare accepts.

After Your Sleep Test: What Comes Next

Once your test is complete, the sleep center sends the results to your doctor. Your doctor will review the results and contact you to discuss whether you have sleep apnea and what treatment options are available. If you do have sleep apnea, the most common treatment is a CPAP machine (continuous positive airway pressure), which keeps your airway open while you sleep.

Medicare Part B also covers CPAP machines and supplies, though again you pay 20% coinsurance after your deductible. Your doctor must order the CPAP, and you typically rent it for the first month before deciding whether to purchase it. Many people find CPAP helpful for reducing daytime sleepiness and improving sleep quality.

Frequently Asked Questions

Does Medicare cover a sleep test if I order it myself without a doctor's order?

No. Medicare only covers a sleep test when your doctor orders it and documents a medical reason. Tests you arrange privately without a doctor's order are not covered by Medicare, even if you pay out of pocket.

Will Medicare cover a second sleep test if the first one was inconclusive?

Yes, if your doctor orders it and documents that the first test was inconclusive or that your symptoms have changed. Medicare will review the medical reason for the second test, just as it did for the first.

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

Medicare Advantage plans must cover sleep tests at the same level as Original Medicare Part B, but they may have different rules about which facilities you can use or whether you need prior authorization. Call your plan before scheduling the test to confirm coverage and any requirements.

Does Medicare cover sleep apnea treatment if the test shows I have it?

Yes. Medicare Part B covers CPAP machines, oral appliances, and other treatments your doctor prescribes for sleep apnea. You pay 20% coinsurance after your deductible, just as you do for the test.