Does Insurance Cover Hyperbaric Oxygen Therapy?

Navigating insurance coverage for hyperbaric oxygen therapy can be confusing. Some conditions are fully covered while others get flatly denied, and the difference often comes down to specific diagnostic codes and documentation. This guide explains exactly what is covered, by whom, and how to maximize your chances of getting HBOT approved.

Medicare Coverage

Medicare Part B covers HBOT when it is deemed medically necessary for an FDA-approved condition:

What Medicare Covers

Medicare reimburses HBOT for these specific conditions:

• Diabetic wounds of the lower extremities (Wagner Grade 3 or higher) that have not shown measurable improvement after 30 days of standard wound care
• Decompression illness (divers)
• Carbon monoxide poisoning
• Gas gangrene (clostridial myonecrosis)
• Crush injuries, suturing of severed limbs, and progressive necrotizing infections
• Acute peripheral arterial insufficiency
• Preparation and preservation of compromised skin grafts
• Chronic refractory osteomyelitis
• Osteoradionecrosis (radiation-damaged bone)
• Soft tissue radionecrosis
• Cyanide poisoning
• Actinomycosis (bacterial infection) when refractory to antibiotics
• Diabetic wounds of the lower extremities meeting specific criteria

Your Medicare Costs

• Part B deductible: $257 in 2026 (you pay this amount before Medicare kicks in)
• Coinsurance: 20% of the Medicare-approved amount
• Example calculation: If Medicare approves $200 per session, you pay $40 per session after your deductible. For a 30-session course, your total out-of-pocket would be approximately $1,457 ($257 deductible + $1,200 coinsurance)

Medicare Supplemental Insurance (Medigap)

If you have a Medigap policy:

• Plans C, D, F, G, and N cover the 20% coinsurance for Medicare-approved services
• With Medigap, your total cost for HBOT could be as low as the Part B deductible ($257)
• Verify your specific Medigap plan details, as coverage varies

Medicare Advantage (Part C)

Medicare Advantage plans must cover everything Original Medicare covers, but:

• Network restrictions may apply (you may need to use in-network HBOT facilities)
• Prior authorization requirements may differ from Original Medicare
• Copay structures vary by plan
• Some plans may offer additional benefits or lower copays for certain services

Private Insurance Coverage

Major Insurers That Cover HBOT

Most major private insurers cover HBOT for FDA-approved conditions:

• Blue Cross Blue Shield: Covers FDA-approved indications. Requires pre-authorization and documentation of failed standard treatments.
• Aetna: Considers HBOT medically necessary for specific listed conditions. Detailed clinical policy bulletin available online.
• UnitedHealthcare: Covers approved conditions with prior authorization. Requires documentation from a hyperbaric medicine specialist.
• Cigna: Covers HBOT for FDA-cleared conditions. Clinical coverage policy specifies documentation requirements.
• Humana: Similar coverage to other major insurers for approved conditions.

The Pre-Authorization Process

Nearly all insurers require prior authorization before HBOT begins:

1. Your physician orders HBOT: Written order from your treating physician (primary care, surgeon, wound care specialist, etc.)
2. Hyperbaric facility submits request: The facility's billing team sends clinical documentation to your insurer
3. Required documentation typically includes:
   • Primary diagnosis with ICD-10 code
   • Clinical notes documenting the condition's severity
   • Evidence that standard treatments have been tried (typically 30+ days for wound care)
   • Transcutaneous oxygen measurements (TCOM) for wound patients
   • Planned treatment protocol (number of sessions, pressure, frequency)
4. Insurer reviews: Typically takes 5-15 business days
5. Approval: Usually covers an initial block of 20 sessions
6. Continuation requests: Additional sessions approved in blocks based on documented progress

What Private Insurance Does Not Cover

Almost all private insurers explicitly exclude:

• Anti-aging and longevity treatments
• Athletic performance enhancement
• General wellness optimization
• Cerebral palsy (most policies)
• Autism spectrum disorder
• Chronic fatigue syndrome
• Fibromyalgia
• Multiple sclerosis (most policies)
• TBI/post-concussion syndrome (not FDA-approved for HBOT)
• Long COVID (not yet FDA-approved, though clinical trials continue)
• Lyme disease
• Mild HBOT in soft-shell chambers (not recognized as medical-grade HBOT)

Workers Compensation

If your HBOT-qualifying condition resulted from a workplace injury:

• Workers comp may cover HBOT for approved medical conditions
• Coverage is state-specific and varies significantly
• Your treating physician must document the work-related cause
• Pre-authorization through the workers comp carrier is required
• Some states specifically list HBOT in their treatment guidelines for conditions like crush injuries

VA Benefits (Veterans)

Veterans may access HBOT through:

• VA Medical Centers: Some VA hospitals have hyperbaric facilities. Coverage follows VA clinical guidelines.
• Community Care: If your local VA does not offer HBOT, you may be referred to a community provider
• Clinical Trials: VA-sponsored HBOT studies (particularly for TBI in military personnel) provide free treatment
• Important note: VA coverage for TBI-related HBOT is evolving as new research emerges

Tricare (Military)

Tricare covers HBOT for FDA-approved conditions:

• Standard Tricare benefits apply (copays depend on your Tricare plan)
• Must be provided at a Tricare-authorized facility
• Prior authorization required
• Coverage for off-label uses follows the same restrictions as private insurance

Strategies to Get HBOT Covered

For Conditions That Are Typically Covered

1. Get the right diagnosis code: The ICD-10 code on your claim must match an FDA-approved HBOT indication exactly
2. Document failed standard treatment: Insurers want to see that you have tried conventional approaches first. For wound care, this means at least 30 days of standard wound management.
3. Obtain TCOM measurements: Transcutaneous oxygen measurements proving your wound tissue is hypoxic (low oxygen) significantly strengthen your case
4. Choose an in-network facility: Out-of-network HBOT may not be covered or may be reimbursed at a much lower rate
5. Have your physician submit a letter of medical necessity: A detailed letter explaining why HBOT is medically necessary for your specific case

If Your Initial Claim Is Denied

Insurance denials are common for HBOT and can often be overturned:

1. Request the denial reason in writing: Understand exactly why the claim was denied
2. Peer-to-peer review: Ask your hyperbaric physician to speak directly with the insurer's medical director
3. Submit an appeal with additional documentation: Include published clinical evidence supporting HBOT for your condition, detailed treatment records, and a letter of medical necessity
4. External review: If your internal appeal is denied, most states allow an external review by an independent medical reviewer
5. State insurance commissioner complaint: If you believe the denial is unjustified, file a complaint with your state's insurance regulatory agency

For Conditions Not Currently Covered

If you need HBOT for a condition that is not FDA-approved or covered by insurance:

• Clinical trials: Check ClinicalTrials.gov for HBOT studies recruiting for your condition (treatment is free)
• HSA/FSA: If your physician prescribes HBOT for a medical condition, the expense may qualify for HSA/FSA payment
• Medical expense tax deduction: Unreimbursed medical expenses exceeding 7.5% of your adjusted gross income may be tax-deductible
• Payment plans: Most private HBOT clinics offer financing
• Package discounts: Negotiate multi-session pricing (15-30% off)

Understanding Your Bill

HBOT billing can include multiple charges:

• Facility fee: The cost of using the chamber and facility
• Professional fee: The physician's supervision and management fee
• Evaluation and management: Initial and periodic physician evaluations
• TCOM testing: Transcutaneous oxygen measurements
• Wound care: Associated dressings, debridement, and wound management

Ask for an itemized estimate before starting treatment so there are no surprises.

Frequently Asked Questions

Why does my insurer cover HBOT for wounds but not for TBI?

Insurance coverage is tied to FDA clearance. HBOT is FDA-approved for chronic non-healing wounds but not for TBI. Despite promising research, TBI has not yet received FDA approval for HBOT, and insurers use FDA status as their primary coverage criterion. This may change as large-scale clinical trials report results.

My claim was denied. Can I still get treatment?

Yes. You can pursue treatment as a self-pay patient while appealing the denial. Many facilities offer cash-pay rates that are lower than their billed insurance rates. You may also be reimbursed retroactively if your appeal is successful.

Does insurance cover home hyperbaric chambers?

Generally no. Insurance does not cover the purchase of personal hyperbaric chambers. Even for covered conditions, insurers require treatment at accredited medical facilities with physician supervision.

How do I find an in-network HBOT facility?

Call your insurer's member services line and ask for in-network hyperbaric oxygen therapy providers. You can also search your insurer's online provider directory using the specialty "hyperbaric medicine." The UHMS maintains a list of accredited facilities at uhms.org.

Will insurance cover more sessions if my wound is still healing at session 20?

Yes, if your physician documents measurable improvement. The key is showing that the wound is responding to treatment (getting smaller, improved granulation tissue, increased TCOM values) even if it has not fully healed. If the wound shows no improvement after 15-20 sessions, insurers may deny extensions, and your physician should reassess the treatment plan.

Coverage Summary Table

The bottom line: if your condition is on the FDA-approved list and your physician documents medical necessity, you have a strong chance of getting HBOT covered. For everything else, plan for out-of-pocket costs and explore the financial options outlined above.

Related Reading

• Does Insurance Cover Hyperbaric Oxygen Therapy? [2026] Coverage Guide
• Hyperbaric Oxygen Therapy: Understanding Costs and Coverage for Patients
• Hyperbaric Oxygen Therapy Benefits: What Research Shows
• Mild Hyperbaric Oxygen Therapy: Benefits and Limitations
• Medicare HBOT Coverage: The 14 Approved Indications

-- The HBOT Finder Team