Does Medicare Cover CPAP Machines in 2026? Sleep Apnea Coverage Explained

Sleep apnea affects an estimated 39 million American adults, with prevalence rising sharply after age 60. Untreated obstructive sleep apnea is directly linked to hypertension, heart arrhythmias, stroke, type 2 diabetes, and daytime cognitive impairment. For Medicare beneficiaries, CPAP therapy is a well-covered benefit — but the coverage rules are specific enough that many patients lose coverage by not understanding them upfront.

1. What Medicare Requires to Cover a CPAP

Medicare will cover a CPAP machine only when all of the following conditions are met:

• Diagnosis of obstructive sleep apnea (OSA): Confirmed by a qualifying sleep study showing an Apnea-Hypopnea Index (AHI) of 15 or more events per hour OR an AHI of 5–14 events per hour with documented symptoms (excessive daytime sleepiness, impaired cognition, mood disorders, insomnia, or hypertension, heart disease, or a history of stroke).
• A written order from a treating physician: The doctor must document the diagnosis, the sleep study results, and the medical necessity for CPAP.
• The CPAP supplier must be a Medicare-enrolled DME supplier: Not all CPAP suppliers accept Medicare. Use a Medicare-enrolled supplier or your claim will be denied.
• Face-to-face clinical evaluation within 6 months before the sleep study: Your treating physician must have evaluated you within the six months prior to ordering the sleep test.

2. Does Medicare Cover the Sleep Study?

Yes. A qualifying sleep study is required to receive CPAP coverage, and Medicare covers both types:

Medicare generally accepts home sleep tests as the first-line diagnostic tool for straightforward cases of suspected obstructive sleep apnea. An in-lab study may be required if the home test is inconclusive or if you have other conditions (heart failure, COPD, or hypoventilation) that complicate the sleep apnea picture.

3. The 13-Month Rental-to-Own Process

Medicare covers CPAP machines differently from most durable medical equipment. Rather than purchasing the machine outright, Medicare pays for a 13-month rental. Here’s how the timeline works:

• Months 1–3: Initial rental + compliance evaluation
  Medicare pays the DME supplier for the CPAP rental. You pay 20% coinsurance each month. This period is critical—you must demonstrate compliance to continue coverage.
• Month 3 (90-day mark): Compliance review
  Your doctor must document that CPAP is helping your symptoms, AND you must meet the usage threshold (see Section 4). Without this, Medicare stops covering the rental.
• Months 4–13: Continued rental
  If you pass the compliance review, Medicare continues paying for the rental. You continue paying 20% coinsurance monthly.
• After Month 13: Ownership transfers to you
  After 13 consecutive rental months, the CPAP machine becomes yours at no additional charge. Medicare, and you have paid in full over those 13 months.

The total Medicare-approved rental cost for 13 months is typically $500–$900 depending on the CPAP model and your geographic area. Your 20% share over 13 months is roughly $100–$180 total, after meeting your Part B deductible.

4. The Compliance Rule — This Is the One That Trips People Up

Modern CPAP machines record usage data automatically on a data card or via wireless transmission to your sleep provider. Your doctor and DME supplier will review this data at the 90-day mark. The review must show:

1. You used the CPAP at least 4 hours per night on 70% of nights in a 30-consecutive-day window within the first 90 days.
2. Your treating physician evaluates you and documents that CPAP is benefiting you (symptoms have improved).

If you’re struggling to use your CPAP consistently—common reasons include mask fit, pressure discomfort, claustrophobia, or nasal congestion—contact your DME supplier or sleep specialist before the 90-day window closes. Many issues can be resolved with a different mask style, a pressure adjustment, heated humidification, or a bilevel (BiPAP) switch.

5. What CPAP Supplies Does Medicare Cover?

After your CPAP is set up, Medicare also covers ongoing supplies on a defined replacement schedule. You pay 20% coinsurance on each supply order.

You don’t have to replace items on the maximum schedule—Medicare will cover them when you need them up to the listed frequency. Many DME suppliers will proactively ship supplies on the maximum schedule whether you need them or not. Only order what you actually need and use; unused supplies returned improperly can create billing complications.

6. What You Pay for CPAP Under Medicare in 2026

7. Does Medicare Cover BiPAP Machines?

Yes — with more restrictive criteria. BiPAP (Bilevel Positive Airway Pressure) machines are covered under Medicare Part B as DME, but Medicare requires that CPAP therapy has been tried first and failed. Specifically, Medicare will approve BiPAP coverage when:

• The patient has been on CPAP for at least 3 months without adequate benefit, or
• The patient is diagnosed with complex sleep apnea (treatment-emergent central apnea), central sleep apnea, or obesity hypoventilation syndrome—conditions where BiPAP is the appropriate first-line treatment.

The same 13-month rental-to-own structure and 20% coinsurance apply to BiPAP as to CPAP. BiPAP machines typically have higher monthly rental rates, so your 20% share may be $15–$30/month during the rental period.

Medicare does not cover ASV (Adaptive Servo-Ventilation) therapy for patients with central sleep apnea caused by heart failure—a restriction put in place after a 2015 clinical trial showed increased mortality in that specific population.

8. Frequently Asked Questions

Can I buy my own CPAP machine and have Medicare reimburse me?

No — not in the traditional sense. Medicare requires you to use a Medicare-enrolled DME supplier and follow the rental-to-own process. If you purchase a CPAP directly from a retailer that is not a Medicare-enrolled supplier, Medicare will not reimburse you. Always confirm your supplier’s Medicare enrollment before starting the rental process.

What if I already own a CPAP and need a new one?

If your existing machine is more than 5 years old and you have a current valid sleep study and doctor’s order, Medicare will cover a replacement machine under the same rental-to-own process. You’ll need updated documentation of medical necessity from your physician.

Does Medicare cover travel CPAP machines?

Standard CPAP machines covered by Medicare are generally full-size units. Compact travel CPAPs are not separately covered. However, once your primary CPAP is owned (after 13 months), you may purchase a travel CPAP out of pocket—they range from $200 to $600—without affecting your Medicare coverage for supplies on your primary machine.

Does Medicare cover dental appliances for sleep apnea?

Oral appliance therapy (mandibular advancement devices) for sleep apnea is covered under Medicare Part B as DME—but only when CPAP has been tried and documented as ineffective or clinically inappropriate. The appliance must be fitted by a dentist or oral specialist and requires the same physician order process as CPAP.

Does Medicare Advantage cover CPAP the same way?

Medicare Advantage plans must cover CPAP at least as generously as Original Medicare. Some plans have lower coinsurance or waive the deductible for DME. Check your plan’s Evidence of Coverage document for your specific CPAP benefit. You may also be required to use an in-network DME supplier under your Advantage plan.

This article is for informational purposes only. CPAP coverage rules and replacement schedules are established by CMS and enforced by your Medicare Administrative Contractor (MAC). Requirements may vary slightly by region. Verify your specific coverage at Medicare.gov or by calling 1-800-MEDICARE.