Short answer: Medicare Part B covers medically necessary oxygen and oxygen equipment for use in the home when eligibility rules are met. A supplier must provide equipment that meets the person’s documented oxygen and mobility needs, but Medicare does not guarantee a particular portable concentrator brand or model.
Original Medicare coverage
Medicare covers oxygen systems, storage containers, tubing, oxygen contents, and related supplies. Covered systems can include portable equipment when it is medically necessary. The prescribing provider determines the oxygen requirements. The supplier must furnish equipment that meets those requirements, including documented mobility needs inside and outside the home.
Medicare uses a rental system for oxygen equipment. The supplier retains ownership during the rental period and is responsible for required supplies, maintenance, and service.
Eligibility and limits
The provider must document that the person is not getting enough oxygen, that oxygen therapy may improve the condition, and that qualifying test results or another covered condition support the need. The order must state the type and amount of oxygen required. A personal preference for a lighter or different model does not establish coverage for that model.
Costs
After the Part B deductible, the beneficiary generally pays 20 percent of the Medicare-approved rental amount. Medicare makes rental payments for 36 months. The supplier then continues furnishing oxygen equipment and related services for up to five years from the start of service while the medical need continues. Maintenance coinsurance may apply in limited circumstances after the 36-month period.
Medicare Advantage
Medicare Advantage plans cover qualifying oxygen equipment but may require network suppliers and prior authorization. A person changing plans should contact the new plan before changing oxygen suppliers.
What to do next
- Ask the provider to document oxygen flow and mobility requirements.
- Confirm that the supplier is enrolled in Medicare and accepts assignment.
- Ask which equipment will be supplied and how travel needs are handled.
- Do not buy equipment before verifying whether Medicare requires rental.
Sources
Last reviewed: August 2026. Medicare rules and plan benefits can change.