HCPCS code G0237: Respiratory therapy, muscle strength or endurance2026 Medicare rate & RVUs in Maryland
Reports one-on-one respiratory muscle training intended to build strength or endurance, counted in 15-minute units during supervised outpatient treatment.
Medicare pays $12.81–$14.93 for G0237 in the office in Maryland, from Rest of Maryland to Washington, DC area. Which amount applies depends on the service address.
Medicare allowed amount for participating (non-QP) physicians, before deductible, coinsurance and claim adjustments. Not a patient’s bill or a hospital charge.
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On this page 9 sections
What G0237 covers
G0237 describes direct, one-on-one therapeutic work aimed at improving respiratory muscle strength or endurance. A respiratory therapist or other qualified practitioner may guide the patient through targeted breathing or muscle-training exercises in an outpatient setting, including during pulmonary rehabilitation. The service is distinct from general respiratory-function activities that do not focus on strengthening or increasing endurance of the respiratory muscles.
Report the service in 15-minute units, supported by documentation of the treatment provided, face-to-face one-on-one time, and the respiratory muscle goal addressed. The record should distinguish this focused training from other respiratory procedures furnished during the visit. CMS classifies G0237 as an incident-to service: it may be billed only when performed under physician supervision. The CMS fee schedule assigns practice-expense and malpractice relative value units, with no physician work relative value units.
This summary was written with AI assistance from CMS physician fee schedule data and checked against the CMS billing rules shown here. Rates on this page come directly from CMS files.
Where G0237 pays more and less in Maryland
The same RVUs, adjusted for each area’s costs. Open a locality for its calculation, history and nearby areas.
3 payment localities
$12.81 to $14.93
| Payment locality | Office | Facility |
|---|---|---|
| Baltimore area, MD | $13.67 | Unavailable |
| Rest of Maryland | $12.81 | Unavailable |
| Washington, DC area | $14.93 | Unavailable |
How the G0237 rate is calculated
Each of G0237’s three RVUs is multiplied by a geographic index (GPCI) for the payment locality, added up, and multiplied by the conversion factor. Drag the indexes or enter a ZIP to see what moves the rate.
How the rate is built · G0237
RVUs × geographic indexes × conversion factor
Work0.00
0.00 RVUs× 1.000 GPCI
Practice expense0.37
0.37 RVUs× 1.000 GPCI
Malpractice0.01
0.01 RVUs× 1.000 GPCI
Adjusted RVUs
0.3800
Conversion factor
$33.4009
Medicare rate
$12.69
Every GPCI starts at 1.000, the national rate. Enter a ZIP or drag a slider.
Payment rules and modifiers for G0237
The CMS indicators that decide how G0237 is paid alongside other services.
CMS payment indicators · G0237
Respiratory therapy, muscle strength or endurance
| Rule | CMS value | What it means |
|---|---|---|
| Global period | XXX | The global surgery concept doesn’t apply. |
| Multiple procedures | 0 | No multiple-procedure reduction. |
| Bilateral (modifier 50) | 0 | The 150% bilateral adjustment doesn’t apply. |
| Assistant at surgery (80/81/82/AS) | 0 | Not paid without supporting documentation. |
| Co-surgeons (62) | 0 | Not permitted. |
| Team surgery (66) | 0 | Not permitted. |
| Professional/technical | 5 | Incident-to service. |
G0237 compared with similar codes
Compare codes · National
4 codes, side by side
How to choose
- G0238Respiratory therapyIndividual, other therapeutic procedures
- G0237 targets respiratory muscle strength or endurance. G0238 is used for other individual respiratory procedures.
- G0239Respiratory therapyGroup, each 15 minutes
- G0237 is one-on-one treatment; G0239 is for respiratory procedures furnished to two or more individuals as a group.
- 94625Pulmonary rehabWithout continuous ECG monitoring
- 94625 reports a pulmonary rehabilitation session. G0237 identifies focused one-on-one respiratory muscle strength or endurance training.
G0237 billing questions
When should G0237 be selected instead of G0238?
Use G0237 for one-on-one treatment directed at increasing respiratory muscle strength or endurance. G0238 describes other individual respiratory procedures, rather than this specific training focus.
How is the service counted?
G0237 is reported in 15-minute units of one-on-one face-to-face treatment. Document the time and the respiratory muscle training performed.
Can a respiratory therapist perform the service?
A respiratory therapist may provide the treatment, but G0237 is billable only when performed under physician supervision as an incident-to service.
How does G0237 differ from group respiratory therapy?
G0237 is for one patient receiving individual respiratory muscle training. G0239 describes respiratory procedures furnished to a group of two or more individuals.
What documentation supports G0237?
Document the respiratory muscle strength or endurance goal, the specific training delivered, the one-on-one face-to-face service, and the time supporting the units billed.
Where these rates come from
FeeBase calculates base physician payments from CMS work, practice-expense and malpractice RVUs, adjusted by each locality’s geographic indexes and the conversion factor. Services without a published rate are labeled, never given a made-up amount. Amounts are Medicare allowed amounts before claim adjustments: not a patient’s bill or a commercial rate.
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