How to Get Your CPAP Machine Covered by Insurance

To get a CPAP machine covered by insurance, you generally need a qualifying sleep study, a prescription from your doctor, any prior authorization your plan requires, and an in-network durable medical equipment supplier — and once the machine is in your hands, you have to actually use it enough to satisfy your insurer’s compliance rule. Most health plans, including Medicare Part B and marketplace plans, cover CPAP as durable medical equipment (DME) when it’s medically necessary.1Medicare.gov. Continuous Positive Airway Pressure (CPAP) Therapy A machine runs $500 to $1,000 or more at retail, so the steps below are worth doing in order.

Start With What Your Plan Actually Covers

Pull up your plan’s summary of benefits and look for “durable medical equipment” or “DME.” That section tells you what you’ll pay and what conditions apply. Four details matter most:

  • Your deductible. You may owe a set amount before coverage kicks in. The Medicare Part B deductible is $283 in 2026.2Centers for Medicare & Medicaid Services. 2026 Medicare Parts B Premiums and Deductibles
  • Your coinsurance. Medicare pays 80% and you pay 20% after the deductible. Private plans vary.
  • Prior authorization. Some plans require your doctor to get approval before you order the machine, and skipping that step can lead to a flat denial.
  • The supplier network. Most plans have a list of approved DME suppliers, and going outside it means higher costs or no coverage at all.

If you have a marketplace plan under the Affordable Care Act, your plan must cover essential health benefits, which include rehabilitative and habilitative services and devices.3eCFR. Title 45 Part 156 Subpart B – Essential Health Benefits Package CPAP coverage is standard on those plans, but your deductible and coinsurance still apply.

Get a Sleep Study That Qualifies

Every insurer requires a sleep study confirming obstructive sleep apnea before it will cover a CPAP. The study produces a score called the apnea-hypopnea index (AHI), which counts how often per hour your breathing stops or becomes dangerously shallow. Insurers don’t just want a diagnosis; they want specific numbers.

Medicare’s threshold is the benchmark most private plans follow. You qualify for CPAP coverage if your AHI is 15 or higher, or if your AHI falls between 5 and 14 and you also have documented symptoms such as excessive daytime sleepiness, mood disorders, insomnia, hypertension, heart disease, or a history of stroke.4Centers for Medicare & Medicaid Services. Local Coverage Determination for Positive Airway Pressure Devices That second bucket is important. In the mild range, your doctor has to document those additional symptoms or the claim will likely be denied.

Both lab-based polysomnograms and home sleep tests can satisfy the requirement. Medicare accepts Type II, III, and IV home sleep tests when a doctor has documented clinical signs of sleep apnea. Home tests are cheaper and easier, but they sometimes undercount events because they can’t measure brain activity directly. If a home test comes back borderline, your doctor may recommend a lab study for a more definitive reading.

The Face-to-Face Evaluation and Timing

Medicare requires an in-person clinical evaluation before the sleep test, not after.4Centers for Medicare & Medicaid Services. Local Coverage Determination for Positive Airway Pressure Devices Your doctor has to see you, assess your symptoms, and document why a sleep study is warranted. The study must take place on or after that visit. Many private insurers have similar rules.

There’s also a clock. Under Medicare, the face-to-face visit must occur within six months before the CPAP order is written.5CGS Administrators. PAP Devices Ordering Guide If too much time passes, you may need a new evaluation before your supplier can bill.

Prescription and Prior Authorization

A CPAP is a prescription device. Your sleep specialist or pulmonologist writes an order specifying the machine type and pressure settings, plus any accessories like a heated humidifier or a particular mask. For Medicare, the supplier must have a signed standard written order in hand before submitting a claim; without it, the claim is denied as not reasonable and necessary.4Centers for Medicare & Medicaid Services. Local Coverage Determination for Positive Airway Pressure Devices

Insurers also want supporting documentation: the full sleep study report with your AHI, clinical notes from the face-to-face evaluation, and a statement of medical necessity. If your plan requires prior authorization, your doctor’s office submits everything to the insurer for review before the CPAP is dispensed. Approval can take a few days or a few weeks. Ordering the machine before authorization comes through is one of the fastest ways to get stuck with the full bill.

Pick the Right Supplier

Where you get the machine affects both your cost and whether the claim goes through at all. Most insurers keep a network of approved DME providers. Using one in network keeps your out-of-pocket costs at the expected coinsurance level. Going out of network often means paying the spread between what the insurer approves and what the supplier charges, or seeing the claim denied outright.

For Medicare, the supplier must be enrolled in Medicare, and it helps to confirm the supplier accepts Medicare assignment, meaning they agree to charge only the coinsurance and Part B deductible on the Medicare-approved amount. A supplier who doesn’t accept assignment can charge more, and you’d have to pay upfront and wait for partial reimbursement.1Medicare.gov. Continuous Positive Airway Pressure (CPAP) Therapy Ask upfront whether the supplier also provides ongoing help with machine adjustments, mask fitting, and troubleshooting; some plans expect that service.

Expect a Rental, Not a Purchase

Most plans, Medicare included, don’t buy the machine outright on day one. They pay a monthly rental fee, and after a set number of months ownership transfers to you. Under Medicare, that rental period is 13 months of continuous rental, after which you own the machine and Medicare covers reasonable maintenance and servicing.6Noridian Medicare. Capped Rental Items

Your coinsurance keeps flowing each month during the rental. If you stop using the machine for more than 60 consecutive days during that period, the rental clock can reset. Some private insurers use a similar structure with a different length, and a few allow an outright purchase, which can make sense if your deductible is already met.

Meet the 90-Day Compliance Rule

This is where people lose coverage without realizing it. Medicare and most private plans track your usage electronically during the first 90 days and require a minimum before they’ll keep paying.

The standard: you must use the CPAP at least four hours per night on 70% of nights during any consecutive 30-day period within the first three months.4Centers for Medicare & Medicaid Services. Local Coverage Determination for Positive Airway Pressure Devices That’s at least 21 out of 30 nights with four or more hours of use. Modern CPAP machines report this data wirelessly to your supplier, so the numbers are what they are.

Hit the threshold, and your doctor does a follow-up evaluation between day 31 and day 91 to confirm the therapy is helping. Miss it, and your insurer can revoke coverage. Under Medicare, failing the compliance check means starting over with a new sleep study and a fresh trial period. If comfort is the problem in the first few weeks, call your supplier about mask adjustments or pressure changes rather than just taking the machine off at night.

Replacement Supplies

The machine is only part of it. Masks, cushions, tubing, and filters wear out, and insurance covers replacements on a set schedule. Order too early and you pay out of pocket; wait too long and you’re running degraded equipment. The standard Medicare schedule, which many private insurers mirror:7GovInfo. CPAP Replacement Supplies Frequency

  • Mask cushions and nasal pillows: up to 2 per month
  • Full face mask or nasal mask frame: 1 every 3 months
  • Tubing: 1 every 3 months
  • Disposable filters: 2 per month
  • Non-disposable filters: 1 every 6 months
  • Headgear and chinstrap: 1 every 6 months
  • Humidifier water chamber: 1 every 6 months

Your supplier should track intervals and contact you when you’re eligible. If they don’t, keep your own calendar and check that replacement orders are actually being billed to your insurer instead of charged to you at retail.

If Your Claim Is Denied

Even when you do everything right, denials happen. The most common reasons:

  • AHI too low, or an AHI between 5 and 14 without documentation of the required additional symptoms.4Centers for Medicare & Medicaid Services. Local Coverage Determination for Positive Airway Pressure Devices
  • Failed compliance in the first 90 days.
  • Missing prior authorization when the plan required it.
  • An out-of-network or non-enrolled supplier.
  • Incomplete paperwork: missing pressure settings, no sleep study on file, no documented face-to-face evaluation.
  • Billing errors, mismatched patient information, or late submission.

The denial letter should give the specific reason, and the reason determines your next move. For plans subject to the Affordable Care Act, including all marketplace plans and most employer plans, you have 180 days from the date of the denial notice to file an internal appeal.8HealthCare.gov. Internal Appeals Medicare has its own appeals process with different deadlines, so check the denial letter.

A strong appeal answers the exact reason for denial. If it’s medical necessity, ask your doctor for a detailed letter and add any clinical evidence that wasn’t in the first submission. If it’s failed compliance, some insurers let you restart the trial period. For billing or paperwork errors, work with your supplier to correct and resubmit.

If the internal appeal fails, federal law lets you request an external review by an independent organization with no tie to your insurer.9HealthCare.gov. External Review You file that request in writing within four months of the final internal denial. Every insurer in every state must offer an external review process meeting federal consumer protection standards.10Centers for Medicare & Medicaid Services. External Appeals Your state’s department of insurance or consumer assistance program can walk you through it.

If CPAP Genuinely Doesn’t Work for You

If you try CPAP and can’t tolerate it, insurance may cover alternatives. Bilevel positive airway pressure (BiPAP) devices are covered under Medicare when specific clinical criteria are met, including documented symptoms and, in many cases, evidence that CPAP alone was insufficient.11Centers for Medicare & Medicaid Services. Respiratory Assist Devices Oral appliances are sometimes covered for mild to moderate sleep apnea or for patients who can’t use any form of positive airway pressure, and surgical implants like upper airway stimulation devices may be covered for moderate to severe cases when CPAP has failed. In each case, the insurer wants documentation that CPAP was tried first, so keep records of your CPAP trial even if the experience was miserable.