How much does HBOT cost? We checked 531 clinic websites to find out

How much does one HBOT session cost?

Where the listing says 2.0 ATA or more, an hour costs about $233 at the median, though that's only 6 clinics.

The priciest hour with no pressure listed, $400, costs about six times the cheapest, $65, and that group can include lower-pressure sessions too.

At clinics that post longer sessions, the median was $250 for 90 minutes (23 clinics) and $380 for 2 hours or more (9 clinics).

How is mild HBOT different?

A $99 mild session and a $233 session listing 2.0 ATA or more aren't cheap and pricey versions of one thing. Here's how the Undersea and Hyperbaric Medical Society (UHMS), which accredits hyperbaric facilities, tells mild HBOT apart from medical HBOT in its April 2026 guidelines.

In 2018, UHMS said all the uses it approved called for 2 ATA or more². That's why we pulled out the clinics listing 2.0 ATA or more.

Mild HBOT is commonly given in soft, fabric chambers. In 2018, UHMS said these run below 1.4 ATA and are designed to be pressurized only with air. It said the Food and Drug Administration (FDA) had cleared them only for acute mountain sickness, a form of altitude sickness².

Outside acute mountain sickness, there's no good evidence that mild HBOT works as a medical treatment: UHMS calls it unproven¹, and in 2018 it said it knew of no reliable clinical evidence that it works².

A price labeled HBOT often leaves out the pressure. Of the 94 clinics with prices listed as HBOT, only 16 say what pressure goes with the price. And 6 of those list some sessions at 1.3 to 1.9 ATA. Our HBOT guide explains the chamber types.

Does HBOT cost more in California?

Yes, by about $40 an hour for sessions sold simply as HBOT: a median of $200 at 12 California clinics, against $160 at 31 clinics in other states. California had the most clinics with posted prices, so we compared it with the other states combined.

See clinics in California, or browse by state.

How much do packages save?

At 24 clinics with no pressure listed, a package of 10 one-hour sessions came with a posted discount of about 13% per session at the median. At 14 mild HBOT clinics, the median discount was about 20%. Before you buy, confirm the package and the single visit include the same pressure, oxygen and session time.

What might a full course cost?

UHMS notes that most conditions HBOT is used for need a series of daily sessions over several weeks¹. So the bill that matters is the whole course. If a clinic quotes $180 a session and your clinician proposes 20 sessions, the sessions alone come to $3,600. Then add any first assessment and other fees, plus travel and time off work if the clinic isn't close by.

Will Medicare or insurance pay?

Only for specific conditions. For anything else, expect to pay the cash price yourself. When Medicare covers HBOT, you usually pay 20% of the Medicare-approved amount. The Part B deductible, the yearly amount you pay before Part B starts paying, may also apply³. That approved amount isn't the same as the cash prices in this guide, so 20% of a posted price isn't what you'd owe.

Medicare Part B may cover HBOT only for the conditions in its national coverage policy, NCD 20.29⁴, as of October 2026. The list includes carbon monoxide poisoning, decompression illness, radiation damage, skin grafts at risk of failing, and qualifying diabetic leg and foot wounds.

For diabetic wounds, HBOT must be added to ongoing wound care. It's covered only after at least 30 days of standard wound care with no measurable signs of healing. During HBOT the wound must be checked at least every 30 days, and coverage stops if it shows no measurable healing within any 30-day period⁴.

The policy also lists conditions Medicare doesn't cover, including multiple sclerosis, arthritis, Alzheimer's disease, heat burns, bedsores (pressure ulcers), and leg sores from poor vein blood flow (stasis ulcers)⁴. HBOTmap lists clinics for wound care and radiation injury.

Private insurers write their own lists, and they can differ from Medicare's. As of October 2026, for example, Aetna considers HBOT medically necessary for qualifying cases of recent heat burns (acute thermal burns). It says the same for some cases of sudden inner-ear hearing loss with no known cause. Steroid pills and ear injections must have failed, and HBOT must start within three months of the hearing loss starting. Medicare's policy covers neither. Aetna also stops treating continued HBOT as medically necessary when there are no measurable signs of healing within any 30-day period of treatment⁶.

Paying with a health savings account (HSA) or flexible spending account (FSA)? A clinic accepting the card doesn't settle whether the expense qualifies. Under IRS rules as of October 2026, these accounts pay for qualified medical expenses⁷. IRS rules count costs of diagnosing, treating or preventing disease, but not expenses "merely beneficial to general health"⁸. An FSA also can't pay you back in advance for future expenses. So a prepaid package may be reimbursed only as you use it⁷. Ask your plan administrator.

Where did we find prices?

We found usable prices most often for wellness clinics: 79 of the 178 we checked. For hospital programs, we found one usable price among 225 checked. We didn't search hospitals' price-transparency files for this guide, though. As of October 2026, federal rules require hospitals to post their standard charges, including discounted cash prices, in a downloadable file. They must also list prices in plain language for at least 300 services you can schedule in advance (or all of them, if a hospital offers fewer), or offer a qualifying online price estimator⁹. If you're considering a hospital program, search its website for "price transparency" or "price estimator".

In California we found prices for 30 of the 82 clinics we checked; in New York, for 3 of 47.

A missing price doesn't mean a clinic is expensive, only that we didn't find a usable one on its website.

What should you ask before you book?

In an August 2025 letter, the FDA asked facilities to train their staff and follow each device's instructions for use. It also asked them to make sure patients are monitored and supervised for the whole treatment¹⁰. When you call a clinic, ask:

1. What does one session cost, and how long is it? Does that time count only time at full pressure, or the whole time in the chamber?
2. What pressure, in ATA, will I be treated at, and how much oxygen will I breathe?
3. Do you sell packages? Is the full price due up front, are unused sessions refunded, and when does the package expire?
4. If you sell a monthly membership, how many sessions does it include, and does each visit cost extra?
5. Are there other fees, such as for a first consultation or medical evaluation, the supervising doctor, an oxygen hood or mask, or paying by card?
6. Who prescribes the sessions, and who will watch me during each one? Is a physician on site?
7. Are you and the supervising physician in my insurance network? Does my plan need to approve the treatment first, and can I get a written estimate of what I'll pay?
8. Do you accept HSA or FSA cards?
9. What's your cancellation policy?

If you're not using insurance, providers and facilities usually must give you a good faith estimate. Under federal rules as of October 2026, you get one when you book at least 3 business days ahead, or when you ask. Each estimate covers one provider or facility, so ask the clinic and any separate doctor for their own. If a bill comes in at least $400 above an estimate, you may be able to dispute it, but you have to start within 120 days of getting the first bill¹¹.

Compare clinics near you

Browse clinics by state, or start with Los Angeles, Phoenix or New York. Of the 142 clinics with a posted price, 120 show a single-session price in our search results. Each clinic's page lists the offers we found, with the source and the date we checked.

How we did this

HBOTmap is a directory of 737 US hyperbaric clinic locations. We checked the websites of 654 of them: 531 different websites, since a chain's locations often share one. We haven't checked the other 83 yet, so they're left out of every share in this guide. Of the 654 we checked:

• 142 had a usable price, checked between September 5 and October 25, 2026.
• At 496 we found no public price, checked between September 16 and October 25, 2026.
• 16 had no price our check could use for HBOT.

We recorded only prices posted for HBOT itself, with the page and the date. For 131 of the 142 clinics with a price, every price came from the clinic's own website. For 10, some or all came from the clinic's online booking page, and for 1, from MDsave, a site where providers list prices.

Each listing is one clinic location, and locations of the same chain count separately. This isn't a random sample of US clinics. It's the clinics whose websites we checked, and only those that post prices show up in the price figures.

We grouped each price by what its listing says. A session counts as mild when the clinic calls it mild or the listing states a pressure below 1.5 ATA. We split the other HBOT prices by the pressure the listing states: 2.0 ATA or more, 1.5 to 1.9 ATA, or none. For each clinic we kept the lowest regular price in each group and session length, so a clinic can appear in more than one row. Session lengths are as each clinic posted them. A listing may count only the time at full pressure, or the whole time in the chamber.

We left out introductory deals, member-only rates, bundles with other treatments, and groups with fewer than 5 clinics, such as listings that state 1.5 to 1.9 ATA. The session-length table also leaves out prices that don't say how long the session is (23 HBOT clinics with no pressure listed, median $150; 15 mild HBOT clinics, median $105) and less common lengths (8 and 5 clinics).

Package discounts compare each clinic's 10-session package with its own single session, both 60 minutes and at the same listed pressure, or with no pressure listed on either; those unlisted pairs may not be the same treatment. We show the middle half of prices only for groups of 10 or more clinics. Prices in tables and charts are exact; we round them in the text.

The figures use HBOTmap's public listings as of October 26, 2026. Prices change, so confirm the current price with the clinic before you book. If we correct a number, we'll note it here.

Sources

1. Undersea and Hyperbaric Medical Society (UHMS): Guidelines for Credentialing, Privileging and Supervision of Hyperbaric Oxygen Treatment in the U.S.A., revised April 2026
2. UHMS: Position Statement on Low-Pressure Fabric Hyperbaric Chambers, revised July 2018
3. Medicare.gov: Hyperbaric oxygen therapy coverage
4. CMS: National Coverage Determination 20.29, Hyperbaric Oxygen Therapy
5. Centers for Medicare & Medicaid Services (CMS): Decision Memo for Hyperbaric Oxygen Therapy for Hypoxic Wounds and Diabetic Wounds of the Lower Extremities (CAG-00060N), August 30, 2002
6. Aetna: Clinical Policy Bulletin 0172, Hyperbaric Oxygen Therapy
7. Internal Revenue Service (IRS): Publication 969 (2025), Health Savings Accounts and Other Tax-Favored Health Plans
8. IRS: Publication 502 (2025), Medical and Dental Expenses
9. CMS: Hospital Price Transparency, requirements for hospitals
10. Food and Drug Administration (FDA): Follow Instructions for Safe Use of Hyperbaric Oxygen Therapy Devices, letter to health care providers, August 25, 2025
11. Centers for Medicare & Medicaid Services (CMS): Know your medical bill rights when not using insurance

Prepared by HBOTmap. Prices checked September 5 to October 25, 2026.

Talk to your doctor before starting HBOT, especially for a medical condition.