Sleep apnea treatment options and Medicare/insurance coverage

Overview of CPAP, oral appliances, positional therapy, nerve stimulation and surgery, plus Medicare CPAP rules and insurer prior authorization.

Obstructive sleep apnea is a condition in which the upper airway repeatedly narrows or closes during sleep. There are several treatments, and the right one depends on severity, anatomy, other health conditions and personal preference. This guide summarizes options and how coverage generally works. It is not medical advice, and your sleep clinician should guide the choice.

Treatment options

The National Heart, Lung, and Blood Institute (NHLBI) describes several approaches.

• Positive airway pressure (PAP). NHLBI calls PAP devices the most common treatment. CPAP delivers constant pressure, APAP adjusts pressure automatically, and BPAP varies pressure between breathing in and out. Mask fit, humidification and coaching from the supplier and clinic often decide whether people keep using it.
• Oral appliances. Custom-fitted mouthpieces, such as mandibular repositioning devices, hold the jaw or tongue forward to keep the airway open. They are usually made with a dentist trained in this area, and follow-up testing is often used to check they work.
• Positional therapy. For some people, apnea is worse when sleeping on the back, and sleeping on the side can help, as NHLBI notes among lifestyle measures.
• Weight management and lifestyle. NHLBI lists regular activity, a healthy weight, limiting alcohol and caffeine, and quitting smoking. NHLBI also notes that the FDA has approved a weight-loss injection for adults with moderate to severe sleep apnea and obesity. See the FDA site for current drug information and ask your doctor whether it applies to you.
• Hypoglossal nerve stimulation. An implanted device stimulates the nerve that moves the tongue. It is a surgical option, generally considered when other treatments such as PAP have not worked or are not tolerated, and it has eligibility criteria set out in the device labeling.
• Other surgery. NHLBI lists tonsillectomy, removal of airway tissue, jaw advancement and weight-loss surgery in appropriate cases.
• Orofacial therapy. Mouth and facial muscle exercises may help some children and adults, per NHLBI.

Ask your clinician about expected benefits, risks, recovery, and how success will be measured for each option.

Medicare coverage for CPAP

Medicare Part B covers CPAP as durable medical equipment for eligible people with obstructive sleep apnea. The rules come from the Centers for Medicare and Medicaid Services (CMS) National Coverage Determination 240.4. As summarized there, key points include:

• The diagnosis of obstructive sleep apnea must be confirmed by an attended polysomnogram in a sleep lab or by a qualifying home sleep test using a Type II, III or IV monitor recording at least three channels. The test must be ordered by the treating physician and provided under appropriate physician supervision.
• Severity must meet a threshold: an apnea-hypopnea index (AHI) or respiratory disturbance index of at least 15 events per hour, or 5 to 14 events per hour with documented symptoms such as excessive daytime sleepiness, impaired cognition, mood disorders, insomnia, hypertension, ischemic heart disease or history of stroke.
• Initial coverage is limited to a 12-week period to identify people who benefit from CPAP.
• The supplier must educate you in using the device before you begin.

Coverage beyond the trial depends on documentation. The Medicare contractors' PAP devices policy (LCD L33718) describes adherence as use of at least 4 hours per night on 70 percent of nights during a consecutive 30-day period within the first three months, plus an in-person visit with your treating physician between the 31st and 91st day documenting that you are benefiting. Rules and contractor guidance can change, so read the NCD and confirm with your supplier or 1-800-MEDICARE.

Per Medicare.gov, Medicare covers CPAP rental for 13 months, after which you own the machine. After the Part B deductible you generally pay 20 percent of the Medicare-approved amount for the machine and supplies such as masks and tubing when your supplier accepts assignment. Use a Medicare-enrolled supplier and ask whether it accepts assignment for all rental months. Medicare Advantage plans must cover what original Medicare covers but may have their own network and authorization rules.

If the trial does not work out

Under the same policy, someone who does not meet the adherence and benefit requirements in the first 12 weeks can re-qualify for a PAP device, but needs both an in-person re-evaluation by the treating practitioner to find out why the therapy failed and a repeat sleep test in a facility (a Type I study, which may be diagnostic, titration or split-night). If the mask or pressure is the problem, raise it early in the trial rather than at the end.

Medicare and oral appliances

Medicare's DME contractors cover a custom-fabricated mandibular advancement appliance under the oral appliances policy (LCD L33611) when all of these are met:

• an in-person evaluation by the treating practitioner before the sleep test, and a sleep test that practitioner ordered;
• an AHI or RDI of at least 15 events per hour (minimum 30 events), or 5 to 14 per hour (minimum 10 events) with documented symptoms or conditions;
• if the AHI or RDI is above 30, the patient cannot tolerate PAP or the treating practitioner finds PAP contraindicated;
• the treating practitioner orders the device after reviewing the sleep test report, and a licensed dentist provides and bills for it.

Prefabricated oral appliances are denied as not reasonable and necessary. For any device, you can check the FDA's medical device recall database by product or company name, and report a problem through the FDA's MedWatch program.

Private insurance and prior authorization

Many private plans follow a similar pattern but set their own rules. Common features include a required sleep test, a minimum severity, in-network suppliers, rental before purchase, and proof of use through the machine's data. Some plans require prior authorization, meaning approval before a test, device or procedure. Oral appliances, nerve stimulation and surgery are more likely to need it and may be covered under medical or dental benefits, or not at all. Call the number on your card and ask:

• Is prior authorization required, and who submits it?
• Which suppliers and clinics are in network?
• What are my deductible, copay or coinsurance?
• What usage documentation is required, and for how long?

Keep records of calls, including names and dates, and appeal denials in writing if your clinician believes treatment is needed.

When to see a doctor

Do not start or stop treatment on your own. Contact your clinician if you cannot tolerate the mask, symptoms return, or you gain or lose significant weight. Signs such as loud snoring, breathing pauses or heavy daytime sleepiness warrant evaluation. More patient information is available at sleepeducation.org.

Updated 2026-10-03.

General information only, current as of the date above. The information on Sleep Clinic Index is not medical advice and does not replace a doctor, nurse, discharge planner or other qualified professional. Do not use it to make decisions about diagnosis or treatment. If you have a medical emergency, call 911. Rules and programs change; check the official sources linked in this guide.