Acute thermal burns are on the list of FDA-approved HBOT indications. That puts this article in different territory from most off-label HBOT content. The evidence is real, the medical use is established, and major burn centers run HBOT programs. See the thermal burns evidence atlas for the full study-by-study evidence breakdown.
We pulled the relevant Cochrane reviews, recent RCTs, and the Undersea and Hyperbaric Medical Society's position. We also looked at how the major burn centers — Shriners, the US Army Institute of Surgical Research — currently use HBOT.
The FDA has cleared HBOT for 13 specific uses. Thermal burns are one of them.
That does not mean HBOT is the right treatment for every burn. We walk through where it helps and where it does not below.
What thermal burns look like
Burns are classified by depth. Superficial (first-degree) burns affect only the outer skin layer. Partial-thickness (second-degree) burns go deeper, into the dermis.
Full-thickness (third-degree) burns destroy the full skin layer plus deeper tissue.
The American Burn Association estimates roughly 450,000 burn injuries receive medical treatment annually in the US. The vast majority are treated as outpatients.
The most severe burns — those covering large body surface area, or burns with airway involvement — are treated at the 130 specialized burn centers across the US.
HBOT is not a routine treatment for minor burns. The published indications focus on moderate-to-severe deep partial-thickness and full-thickness injuries.
How HBOT helps burned tissue
The mechanism centers on the "zone of stasis." Burned tissue includes a central dead zone, an outer zone that survives, and a middle zone that may live or die depending on perfusion in the first 48-72 hours (Jackson 1953).
HBOT raises tissue oxygen levels enough to support the at-risk middle zone. Higher oxygen reduces edema, slows ongoing tissue death, and supports the cells trying to recover.
Animal models and human studies show that HBOT reduces burn extension and accelerates healing (Cianci & Sato 1994). The effect is largest when HBOT starts in the first 24 hours.
This is not a soft mechanism story. Burn surgeons can measure burn depth and healing in real time. HBOT's effect on the zone of stasis is reproducible.
The evidence base
The Brannen et al. 1997 RCT randomized 125 burn patients to HBOT or sham. The HBOT arm had shorter hospital stays, fewer surgeries, and lower mortality.
This remains one of the largest RCTs in the field.
The Hart et al. 1974 trial enrolled 191 patients and found reduced mortality and shorter healing times. The trial was smaller and less rigorously controlled by modern standards but pointed in the same direction.
A Villanueva 2004 Cochrane review examined 2 RCTs and concluded that the evidence was inconsistent. The review called for larger, better-controlled trials. That conclusion still holds.
More recent reviews — Ravanfar 2017 — support a beneficial role for HBOT in deep partial-thickness burns. The evidence is stronger for moderate-to-severe burns than for minor ones.
The evidence is not as clean as for delayed radiation injury or carbon monoxide poisoning. But it is far stronger than for off-label uses like brain injury, long COVID, or anti-aging.
What UHMS and burn associations say
The Undersea and Hyperbaric Medical Society lists 14 approved indications. Thermal burns are on the list as a Level 2 indication — supported by some randomized data, recommended in select cases.
The American Burn Association does not require HBOT as part of standard burn care. ABA-verified burn centers may use it as an adjunct.
The US Army Institute of Surgical Research, which runs the military burn program at Brooke Army Medical Center in San Antonio, includes HBOT in its standard of care for selected combat burn cases.
Civilian burn centers vary. Roughly a third of major US burn centers offer HBOT on-site. Others refer to nearby UHMS-accredited hyperbaric programs.
Where to get HBOT for burns
For an acute burn that may benefit from HBOT, the relevant question is not "where's a clinic." It is "which burn center has hyperbaric capability and how fast can the patient get there."
Major burn centers with on-site HBOT include Brooke Army Medical Center (San Antonio), MedStar Washington Hospital Center (DC), and several Shriners Hospitals. The full American Burn Association verified center list shows the major centers.
A wellness clinic running a soft-shell OxyHealth or Summit to Sea chamber at 1.3 ATA is not the right setting for acute burn care. Restore Hyper Wellness and similar chains do not handle acute burns.
Aviv Clinics does not market this indication either. Hard-shell Sechrist Industries or Perry Baromedical chambers at 2.0-2.4 ATA in a hospital setting are the standard. See Aviv Clinics evidence vs. marketing for the marketing-vs-evidence breakdown.
Protocol details
For acute deep burns, the published protocol is twice-daily HBOT sessions for the first 1-3 days, then daily sessions until healing or grafting.
Pressures typically run 2.0 to 2.4 ATA. Each session lasts 90 minutes with air breaks to reduce oxygen toxicity risk.
Total session count varies widely with burn size and depth. Most published protocols run 20 to 40 sessions for the moderate-to-severe range.
HBOT is always adjunctive. The patient still gets fluid resuscitation, surgical debridement, grafting where needed, and aggressive infection control. HBOT supports — it does not replace — standard burn care.
Cost and coverage
Medicare covers HBOT for acute thermal burns under LCD L33718 when delivered as an adjunct to standard burn care. Most commercial insurers in the US follow Medicare.
For acute inpatient cases, HBOT is bundled into the burn admission. Patients do not see a separate per-session bill in most cases.
For outpatient follow-up sessions after discharge, billing is the standard per-session HBOT code. Out-of-pocket cost without insurance for hard-shell HBOT is typically $250 to $500 per session.
The decision about HBOT for a specific burn case rests with the burn surgeon, not a separate hyperbaric clinic. That is an important distinction from off-label HBOT, where patients often self-refer.
Risks specific to burn patients
HBOT carries the usual risks: middle-ear barotrauma (~2% of sessions), oxygen toxicity seizures (rare), and chamber fire risk (FDA 2021 letter).
Burn patients have added concerns. Patients with airway burns may not tolerate the supine position required for monoplace chambers. Patients on high-flow oxygen or ventilation need a multiplace chamber with appropriate critical-care setup.
Burn dressings and topical medications must be cleared for chamber use. Some petroleum-based dressings are flammable in high oxygen and must be removed before sessions.
For more on side effects, see our HBOT safety overview. For chamber fire safety details, the FDA's 2021 healthcare provider letter is the primary source.
Pediatric burn considerations
Pediatric burns make up roughly a quarter of all US burn admissions (CDC injury data). Several Shriners Hospitals offer HBOT for pediatric burn cases.
The mechanistic argument for HBOT in pediatric burns is the same as in adults. Practical concerns differ — younger children may need sedation, chamber design must accommodate smaller patients.
For more on pediatric HBOT generally, see our pediatric HBOT chambers overview.
What to ask if a burn surgeon recommends HBOT
If your burn care team recommends HBOT, several questions are reasonable.
What is the rationale for HBOT in this specific case? The strongest indications are deep partial-thickness burns, large body surface area, or burns with significant zone-of-stasis concerns.
How many sessions and over what timeline? Acute protocols run 20-40 sessions over weeks. If a clinic recommends 60+ sessions for a burn case, ask why.
Is the chamber FDA-cleared? Hospital-based programs use Sechrist Industries or Perry Baromedical hard-shell chambers. Look up the K-number on openFDA.
Is the program UHMS-accredited? Check the UHMS directory. For an FDA-approved use like this one, accreditation matters.
Bottom line
For moderate-to-severe acute thermal burns, HBOT has FDA approval and a real evidence base. The strongest indications are deep partial-thickness and full-thickness burns delivered to a burn center.
The protocol is twice-daily sessions early, then daily, for 20 to 40 total. HBOT supports surgical and standard burn care, not replaces it.
For minor burns, HBOT is not standard. For severe burns at a verified burn center, ask the surgeon whether HBOT is part of the plan.
Related Reading
- HBOT for radiation tissue damage oncology review
- UHMS-accredited HBOT facilities: what certification means
- FDA-cleared hyperbaric chambers complete list
- Best pediatric HBOT chambers for young patients
- HBOT 40-session protocol: why it's the standard
Frequently asked questions
Is HBOT FDA-approved for burns?
Yes. Acute thermal burns are one of the 13 FDA-approved HBOT indications. The Undersea and Hyperbaric Medical Society lists it as a Level 2 indication.
Does insurance cover HBOT for burns?
Medicare covers it for acute thermal burns under LCD L33718. Most commercial insurers follow Medicare. For inpatient burn admissions, HBOT is usually bundled into the hospital stay.
How many HBOT sessions are needed for a burn?
Most published protocols run 20 to 40 sessions for moderate-to-severe burns. The schedule is typically twice-daily for the first few days, then daily.
Can I get HBOT for a minor burn at a wellness clinic?
That is not the standard of care. Minor burns heal with topical treatment. HBOT for burns is delivered at hospital burn centers under surgical oversight, not at wellness clinics.
Which US burn centers offer HBOT?
Roughly a third of ABA-verified burn centers have on-site HBOT. Brooke Army Medical Center, MedStar Washington Hospital Center, and several Shriners Hospitals are major examples. The ABA verified center list shows them.
Medical disclaimer: This article is informational and does not constitute medical advice. HBOT carries real risks including ear barotrauma, oxygen toxicity, and chamber fire. Burn care is delivered by trained burn surgeons. The FDA has cleared HBOT for acute thermal burns as an adjunct to standard burn care, not as a stand-alone treatment.
-- The HBOT Finder Team