What it is
A diabetic foot ulcer is more than a wound — it's a limb-threatening condition. Diabetes narrows small vessels and blunts sensation, so wounds go unnoticed, starve for oxygen, and refuse to close. They are the leading cause of non-traumatic amputations.
How hyperbaric oxygen helps
Healing is oxygen-hungry work: building collagen, growing vessels, fighting bacteria all require it, and the diabetic wound bed has the least of it. HBOT floods the wound with dissolved oxygen and, across a course of sessions, stimulates lasting new blood vessel growth. Reviews of randomized trials associate adjunctive HBOT with substantially fewer major amputations in selected patients.
What treatment looks like
Typically 30–40 daily sessions at 2.0–2.4 ATA, alongside proper wound care, offloading, and blood-sugar control — HBOT complements those, never replaces them.
- Medicare covers this for Wagner grade III+ wounds that haven't improved after 30 days of standard care.
- We coordinate with your podiatrist or wound clinic and report progress.
- The consultation and coverage check are free.
The evidence, honestly
Grade A — Strong Evidence
Supported by randomized trials and/or decades of consistent clinical results.
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Hyperbaric oxygen therapy for chronic wounds (Cochrane systematic review)
Cochrane Database of Systematic Reviews · 2015 · meta analysis
Pooling 12 trials, the review found HBOT improved the chance of diabetic foot ulcers healing in the short term (around 6 weeks), though longer-term and amputation benefits were less certain and trial quality varied.
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Hyperbaric oxygen: its mechanisms and efficacy
Plastic and Reconstructive Surgery · 2011 · review
Widely cited review of HBOT mechanisms: raised dissolved oxygen, stem/progenitor cell mobilization, angiogenesis, and effects on inflammation and reperfusion injury.
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Hyperbaric oxygen therapy facilitates healing of chronic foot ulcers in patients with diabetes (HODFU study)
Diabetes Care · 2010 · n=94 · rct
In this randomized, double-blind, placebo-controlled trial, adding HBOT to standard wound care significantly improved complete healing of chronic diabetic foot ulcers at one year versus placebo (hyperbaric air).
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Adjunctive systemic hyperbaric oxygen therapy in treatment of severe prevalently ischemic diabetic foot ulcer
Diabetes Care · 1996 · n=70 · rct
Randomized trial in which adjunctive HBOT was associated with a significantly lower rate of major amputation in patients with severe ischemic diabetic foot ulcers.
Common questions
Does Medicare really cover this?
Yes — for diabetic lower-extremity wounds meeting criteria (typically Wagner grade III or higher, unresponsive to 30 days of standard care). We verify your specific case for free before anything begins.
My wound has been open for a year — is it hopeless?
Not at all. Chronic, stalled wounds are exactly what this indication exists for. Age of the wound matters less than blood supply, infection control, and getting oxygen to the tissue.
Do I still need my wound clinic?
Yes — HBOT works alongside debridement, offloading, and glucose control, not instead of them. We team up with your existing providers.
Educational content, not medical advice — see our medical disclaimer. *Medicare coverage requires meeting clinical criteria; we verify yours for free. Last medically reviewed July 2026 by Dr. David Greene, MD.