G0277 HCPCS code: Hyperbaric oxygen under pressure, full body chamber, per 30 minute interval
G0277 is the HCPCS Level II code for hyperbaric oxygen under pressure, full body chamber, per 30 minute interval. In 2024 Medicare paid an average of $143.10 per service for G0277 across 165,090 services. Its Medicare coverage code is D (Special coverage instructions apply): Medicare covers it when its national or local coverage criteria are met. The NCCI unit limit is 5 per day on outpatient hospital claims. Medicare volume rose 7% from 2022 to 2024 (154,120 to 165,090 services). In 2024, about 320 clinicians billed Medicare for G0277 for 1,432 beneficiaries; Texas, California, Florida accounted for 56% of services.
Code details
| Field | Value |
|---|---|
| Section | G codes — Procedures and professional services (temporary) |
| Coverage code | D — Special coverage instructions apply |
| Pricing indicator | 13 |
| BETOS category | P5E |
| Added | 2015-01-01 |
| Last action effective | 2015-01-01 |
Who bills G0277 (2024)
| Measure | Value |
|---|---|
| Clinicians billing (by place of service) | 320 |
| Medicare beneficiaries | 1,432 |
| States with claims | 21 |
| Share of services in top 3 states (Texas, California, Florida) | 56% |
Counts only. Supplier and clinician names, contact lists and state-by-state detail are in Caduvo.
Medicare utilization for G0277, 2022–2024
| Year | Services | Beneficiaries | Avg. allowed | Avg. paid |
|---|---|---|---|---|
| 2022 | 154,120 | 1,443 | $180.84 | $144.30 |
| 2023 | 150,259 | 1,316 | $170.81 | $136.02 |
| 2024 | 165,090 | 1,432 | $179.65 | $143.10 |
States with the most G0277 services (2024)
| State | Services | Avg. paid |
|---|---|---|
| Texas | 37,719 | $135.72 |
| California | 26,321 | $161.29 |
| Florida | 22,172 | $137.28 |
| New York | 9,459 | $167.45 |
| Georgia | 9,355 | $141.27 |
NCCI unit limits (MUE)
| Claim type | Max units per day | Rationale |
|---|---|---|
| outpatient hospital claims | 5 | Clinical: Data |
| practitioner claims | 5 | Clinical: Data |
What changed for G0277
- 2015-01-01: G0277 added to HCPCS Level II
- Next scheduled CMS quarterly update (HCPCS and DMEPOS fee schedule): 2027-01-01
Frequently asked questions
What is HCPCS code G0277?
G0277 is the HCPCS Level II code for hyperbaric oxygen under pressure, full body chamber, per 30 minute interval. Short descriptor: "Hbot, full body chamber, 30m".
How much does Medicare pay for G0277?
In 2024, the average Medicare payment was $143.10 per service (average allowed $179.65).
Does Medicare cover G0277?
Coverage code D — Special coverage instructions apply. Medicare covers it when its national or local coverage criteria are met.
How many units of G0277 can be billed per day?
5 on outpatient hospital claims; 5 on practitioner claims (NCCI medically unlikely edits).
Related G02 codes
- G0202 — Screening mammography, bilateral (2-view study of each breast), including computer-aided detection (cad) when performed
- G0204 — Diagnostic mammography, including computer-aided detection (cad) when performed; bilateral
- G0206 — Diagnostic mammography, including computer-aided detection (cad) when performed; unilateral
- G0219 — Pet imaging whole body; melanoma for non-covered indications
- G0235 — Pet imaging, any site, not otherwise specified
- G0237 — Therapeutic procedures to increase strength or endurance of respiratory muscles, face to face, one on one, each 15 minutes (includes monitoring)
- G0238 — Therapeutic procedures to improve respiratory function, other than described by g0237, one on one, face to face, per 15 minutes (includes monitoring)
- G0239 — Therapeutic procedures to improve respiratory function or increase strength or endurance of respiratory muscles, two or more individuals (includes monitoring)
- G0245 — Initial physician evaluation and management of a diabetic patient with diabetic sensory neuropathy resulting in a loss of protective sensation (lops) which must include: (1) the diagnosis of lops, (2) a patient history, (3) a physical examination that consists of at least the following elements: (a) visual inspection of the forefoot, hindfoot and toe web spaces, (b) evaluation of a protective sensation, (c) evaluation of foot structure and biomechanics, (d) evaluation of vascular status and skin integrity, and (e) evaluation and recommendation of footwear and (4) patient education
- G0246 — Follow-up physician evaluation and management of a diabetic patient with diabetic sensory neuropathy resulting in a loss of protective sensation (lops) to include at least the following: (1) a patient history, (2) a physical examination that includes: (a) visual inspection of the forefoot, hindfoot and toe web spaces, (b) evaluation of protective sensation, (c) evaluation of foot structure and biomechanics, (d) evaluation of vascular status and skin integrity, and (e) evaluation and recommendation of footwear, and (3) patient education
- G0247 — Routine foot care by a physician of a diabetic patient with diabetic sensory neuropathy resulting in a loss of protective sensation (lops) to include, the local care of superficial wounds (i.e. superficial to muscle and fascia) and at least the following if present: (1) local care of superficial wounds, (2) debridement of corns and calluses, and (3) trimming and debridement of nails
- G0248 — Demonstration, prior to initiation of home inr monitoring, for patient with either mechanical heart valve(s), chronic atrial fibrillation, or venous thromboembolism who meets medicare coverage criteria, under the direction of a physician; includes: face-to-face demonstration of use and care of the inr monitor, obtaining at least one blood sample, provision of instructions for reporting home inr test results, and documentation of patient's ability to perform testing and report results
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Next steps
- Run a reimbursement report for a device billed under G0277
- Watch G0277 for fee, coverage and descriptor changes
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Sources: CMS HCPCS Level II release October 2026; CMS DMEPOS fee schedule; CMS NCCI MUE tables; CMS Medicare utilization (physician and DME supplier files); CMS Medicare Coverage Database articles. Fees are Medicare allowables, not commercial rates. Not billing or legal advice.