Does Medicare Cover Home Oxygen Therapy? (2026)

Direct Answer

Yes. Medicare Part B covers home oxygen equipment and its contents once a doctor documents medical necessity through a qualifying blood oxygen test. Medicare pays 80% of the approved rental amount after the 2026 Part B deductible of $283, leaving a 20% coinsurance. Medicare Advantage plans must match this benefit at minimum, and some 2026 plans add extra portable equipment options.

What Original Medicare Covers

Medicare Part B classifies home oxygen equipment as durable medical equipment (DME), covering the concentrator or tank system, tubing, delivery devices, and the oxygen contents themselves as a single monthly rental package. Coverage begins only after a treating doctor orders a qualifying oxygen test and documents medical necessity, typically an arterial blood gas or pulse oximetry reading. Medicare requires PaO2 at or below 55 mmHg or oxygen saturation at or below 88% on room air, measured at rest, during exercise, or during sleep, within 30 days of the prescription. Beneficiaries with PaO2 between 56 and 59 mmHg may still qualify if they also have cor pulmonale, dependent edema, or polycythemia.

Oxygen used during an inpatient hospital stay falls under Medicare Part A rather than Part B, since it is bundled into the hospital's daily rate. Once a patient returns home and needs ongoing oxygen therapy, the DME benefit under Part B takes over. Medicare requires the supplier to be Medicare-enrolled and to accept assignment, and the treating doctor must recertify medical necessity at 12 months and again at 61 months to keep coverage active for beneficiaries with a lasting condition such as COPD or pulmonary fibrosis.

How the 36-Month Rental Period Works

Medicare's oxygen rental rules differ from other durable medical equipment because ownership never transfers to the beneficiary. The supplier keeps title to the equipment and receives a monthly rental payment for the first 36 months, a period that covers the concentrator or tank system, all oxygen contents, and any needed repairs or maintenance. After 36 months, the same supplier must continue providing maintenance, servicing, and oxygen contents for up to 24 additional months, for a total benefit period of 60 months (5 years), as long as the beneficiary still has a documented medical need. If a beneficiary's condition improves and oxygen is no longer necessary, coverage ends; if the need continues past 5 years, a new rental period begins with updated testing.

What Medicare Advantage May Add in 2026

Medicare Advantage plans must cover home oxygen therapy at least as generously as Original Medicare, since federal rules require every Medicare Advantage plan to include all Part A and Part B benefits. Beyond that floor, some 2026 Medicare Advantage plans add extra value: lighter travel-sized portable concentrators, faster prior authorization turnaround, or reduced cost-sharing compared with the standard 20% Part B coinsurance. Plan details vary widely by carrier and by county, so beneficiaries should confirm oxygen therapy benefits in the plan's 2026 Evidence of Coverage document or by calling the plan directly before enrolling during Medicare's Annual Enrollment Period, October 15 through December 7, 2026.

Cost Without Coverage in 2026

Out-of-pocket costs for home oxygen therapy add up quickly without Medicare or other insurance. A portable oxygen concentrator purchased outright typically costs $2,000 to $4,000 in 2026, while a stationary concentrator for home use runs $600 to $1,800. Monthly rental from a private DME supplier, before any insurance, generally ranges from $150 to $400 depending on the equipment type and service package. For Medicare beneficiaries who do meet the coverage criteria, the 20% Part B coinsurance on that same rental typically works out to $30 to $80 a month, a fraction of the self-pay rate. Medicare Part D does not cover oxygen equipment because it is durable medical equipment rather than a prescription drug, though Part D may cover related medications like bronchodilators prescribed alongside oxygen therapy.

Standalone Supplemental Options

Medigap policies do not supply oxygen equipment directly, but plans that cover Part B coinsurance, including Plans G, N, and the now closed-to-new-enrollees Plans C and F, pick up some or all of the 20% coinsurance on an approved oxygen rental. Beneficiaries who apply during their 6-month Medigap open enrollment period get guaranteed issue regardless of a preexisting condition; applying later can trigger medical underwriting in most states. For people under 65 who need oxygen therapy but are not yet Medicare-eligible, ACA-compliant marketplace plans must cover durable medical equipment as part of the ACA's essential health benefits, though specific DME coverage rules vary by state and by insurer.

How to Find a Supplier That Covers Oxygen Therapy

Finding a Medicare-approved DME supplier starts with the Medicare.gov supplier directory, where beneficiaries can search by ZIP code and confirm a supplier is Medicare-enrolled and accepts assignment, which caps what the supplier can charge. A treating doctor must first order a qualifying oxygen test, either an arterial blood gas or pulse oximetry reading, and submit documentation of medical necessity to Medicare or the Medicare Advantage plan. Beneficiaries should ask the supplier directly about their specific 2026 rental terms, since practices on same-day delivery, portable equipment options, and travel accommodations vary by company even within the same coverage rules.

Does Original Medicare cover home oxygen therapy in 2026?

Yes. Medicare Part B covers home oxygen equipment as durable medical equipment once a doctor documents medical necessity with a qualifying blood oxygen test. Medicare pays 80% of the approved monthly rental amount after the 2026 Part B deductible of $283, and the beneficiary pays the remaining 20% coinsurance, typically $30 to $80 a month depending on the equipment and service package.

Does Medicare Advantage cover portable oxygen concentrators?

Yes. Every Medicare Advantage plan must cover home oxygen therapy at least as generously as Original Medicare because federal rules require Medicare Advantage plans to include all Part A and Part B benefits. Some 2026 Medicare Advantage plans go further, offering lighter travel concentrators or reduced cost-sharing. Coverage details vary by carrier and county, so check the plan's 2026 Evidence of Coverage.

What blood oxygen level qualifies for Medicare's oxygen coverage?

Medicare generally requires an arterial blood gas showing PaO2 at or below 55 mmHg, or a pulse oximetry reading showing oxygen saturation at or below 88% on room air, measured at rest, during sleep, or during exercise. Beneficiaries with PaO2 between 56 and 59 mmHg may still qualify if they also have cor pulmonale, dependent edema, or polycythemia. The test must be dated within 30 days of the prescription.

How long will Medicare pay for oxygen equipment rental?

Medicare pays a monthly rental fee for the first 36 months, covering the equipment, oxygen contents, and maintenance. After 36 months, the same supplier must continue providing oxygen contents and servicing for up to 24 more months, for a total benefit period of 5 years, as long as medical necessity continues. If the need persists past 5 years, a new rental period starts with updated testing.

Do I own my oxygen equipment or does the supplier?

The supplier owns the oxygen equipment throughout the entire rental period. This differs from most other durable medical equipment under Medicare, where ownership transfers to the beneficiary after 13 months of rental payments. With oxygen equipment, Medicare and the beneficiary's 20% coinsurance continue paying the supplier a monthly rental fee for up to 5 years instead, and the supplier remains responsible for repairs and replacement.

What does home oxygen therapy cost without Medicare in 2026?

Without insurance, a portable oxygen concentrator costs $2,000 to $4,000 to purchase in 2026, and a stationary home concentrator runs $600 to $1,800. Monthly rental from a private supplier typically costs $150 to $400. Beneficiaries who qualify for Medicare pay only the 20% Part B coinsurance on the approved rental amount, usually $30 to $80 a month, a significant savings over full self-pay rates.

Can Medigap help pay for oxygen equipment coinsurance?

Yes. Medigap plans that cover Part B coinsurance, such as Plan G and Plan N, pick up some or all of the 20% coinsurance owed on an approved oxygen rental. Applying during the 6-month Medigap open enrollment period guarantees issue regardless of a preexisting condition. Plans C and F still cover this coinsurance too, but are closed to beneficiaries who became eligible for Medicare after January 1, 2020.

Does Medicare cover oxygen if I only need it during sleep or exercise?

Yes. Medicare covers oxygen therapy triggered by a qualifying drop in blood oxygen during sleep or during exercise, not just at rest. A sleep study or exercise oximetry test showing PaO2 at or below 55 mmHg or oxygen saturation at or below 88% satisfies the medical necessity requirement, even if the beneficiary's oxygen level is normal while resting and awake.