Does insurance cover hyperbaric oxygen therapy?

Insurance coverage for HBOT depends entirely on the diagnosis, the treatment setting, and your specific plan. Medicare and most private insurers cover HBOT for FDA-approved indications when certain criteria are met. The most commonly covered conditions include diabetic lower-extremity wounds that have not improved after 30 days of standard wound care, chronic refractory osteomyelitis, delayed radiation injury (soft tissue and bone), compromised skin grafts and flaps, gas gangrene, and acute carbon monoxide poisoning. Coverage typically requires a physician's order, treatment at an accredited facility, and documentation that conservative treatments have failed. Prior authorization is almost always required — starting treatment without it can result in claim denial. Some insurers limit the number of covered sessions (often 20 to 40) and require periodic progress documentation. Wellness mild hyperbaric therapy at non-medical facilities is almost never covered by insurance, as it is considered experimental or elective. If you are paying out of pocket, ask about HSA and FSA eligibility — HBOT may qualify with a letter of medical necessity from your physician. Always obtain a detailed cost estimate and verify coverage with your insurer before beginning a treatment course to avoid unexpected expenses.

Reviewed by Chad Waldman, Analytical Chemist · Last updated May 2026

About Hyperbaric Oxygen Therapy

HBOT delivers 100% oxygen at 1.