HCPCS code G0237: Respiratory therapy, muscle strength or endurance2026 Medicare rate & RVUs in Iowa
Reports one-on-one respiratory muscle training intended to build strength or endurance, counted in 15-minute units during supervised outpatient treatment.
In Iowa, Medicare pays $11.44 for G0237 in the office.
Check a contract rate as a % of Medicare · G0237 nationwide
Medicare allowed amount for participating (non-QP) physicians, before deductible, coinsurance and claim adjustments. Not a patient’s bill or a hospital charge.
On this page 11 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.
How Iowa compares for G0237
Across 109 of 109 payment localities, the office rate for G0237 runs from $10.79 in Arkansas to $18.00 in San Benito County, CA. Iowa pays $11.44. The RVUs are the same everywhere; the geographic indexes change the dollars.
- Iowa · this page$11.44
- Los Angeles, CA · California$14.84+$3.40
- Washington, DC area · District of Columbia$14.93+$3.49
- Miami, FL · Florida$13.71+$2.27
- Chicago, IL · Illinois$13.19+$1.75
- Manhattan, NY · New York$14.89+$3.45
- Alaska · Alaska$13.35+$1.91
Other areas in Iowa first, then benchmark localities. Bars start at $0.
Every other payment area
| Payment locality | Office | Facility |
|---|---|---|
| AlabamaAlabama | $11.00 | — |
| ArkansasArkansas | $10.79 | — |
| ArizonaArizona | $12.26 | — |
| Bakersfield, CACalifornia | $13.75 | — |
| Chico, CACalifornia | $13.72 | — |
| El Centro, CACalifornia | $13.73 | — |
| Fresno, CACalifornia | $13.72 | — |
| Hanford, CACalifornia | $13.72 | — |
| Madera, CACalifornia | $13.72 | — |
| Merced, CACalifornia | $13.72 | — |
| Modesto, CACalifornia | $13.72 | — |
| Napa, CACalifornia | $16.46 | — |
| Oxnard, CACalifornia | $14.82 | — |
| Redding, CACalifornia | $13.72 | — |
| Rest of CaliforniaCalifornia | $13.72 | — |
| Riverside, CACalifornia | $13.83 | — |
| Sacramento, CACalifornia | $14.55 | — |
| Salinas, CACalifornia | $14.50 | — |
| San Diego, CACalifornia | $14.96 | — |
| Marin County, CACalifornia | $17.58 | — |
| San Francisco, CACalifornia | $17.57 | — |
| San Benito County, CACalifornia | $18.00 | — |
| Santa Clara County, CACalifornia | $17.95 | — |
| San Luis Obispo, CACalifornia | $14.26 | — |
| Santa Cruz, CACalifornia | $15.19 | — |
| Santa Maria, CACalifornia | $14.59 | — |
| Santa Rosa, CACalifornia | $15.36 | — |
| Stockton, CACalifornia | $13.72 | — |
| Vallejo, CACalifornia | $16.44 | — |
| Visalia, CACalifornia | $13.72 | — |
| Yuba City, CACalifornia | $13.72 | — |
| ColoradoColorado | $13.41 | — |
| ConnecticutConnecticut | $13.71 | — |
| DelawareDelaware | $12.51 | — |
| Fort Lauderdale, FLFlorida | $13.12 | — |
| Rest of FloridaFlorida | $12.32 | — |
| Atlanta, GAGeorgia | $12.96 | — |
| Rest of GeorgiaGeorgia | $11.42 | — |
| Hawaii, Guam, HIHawaii | $14.24 | — |
| IdahoIdaho | $11.53 | — |
| East St. Louis, ILIllinois | $12.04 | — |
| Rest of IllinoisIllinois | $11.81 | — |
| Suburban Chicago, ILIllinois | $13.28 | — |
| IndianaIndiana | $11.62 | — |
| KansasKansas | $11.34 | — |
| KentuckyKentucky | $11.29 | — |
| New Orleans, LALouisiana | $12.01 | — |
| Rest of LouisianaLouisiana | $11.26 | — |
| Metropolitan Boston, MAMassachusetts | $15.05 | — |
| Rest of MassachusettsMassachusetts | $13.28 | — |
| Baltimore area, MDMaryland | $13.67 | — |
| Rest of MarylandMaryland | $12.81 | — |
| Rest of MaineMaine | $11.58 | — |
| Southern Maine, MEMaine | $12.46 | — |
| Detroit, MIMichigan | $12.49 | — |
| Rest of MichiganMichigan | $11.66 | — |
| MinnesotaMinnesota | $12.82 | — |
| Metropolitan Kansas City, MOMissouri | $11.93 | — |
| Metropolitan St. Louis, MOMissouri | $12.10 | — |
| Rest of MissouriMissouri | $10.98 | — |
| MississippiMississippi | $10.89 | — |
| MontanaMontana | $12.69 | — |
| North CarolinaNorth Carolina | $11.74 | — |
| North DakotaNorth Dakota | $12.49 | — |
| NebraskaNebraska | $11.53 | — |
| New HampshireNew Hampshire | $13.16 | — |
| Northern New JerseyNew Jersey | $14.69 | — |
| Rest of New JerseyNew Jersey | $13.86 | — |
| New MexicoNew Mexico | $11.73 | — |
| NevadaNevada | $12.65 | — |
| NYC suburbs and Long Island, NYNew York | $15.31 | — |
| Poughkeepsie and northern NYC suburbs, NYNew York | $13.94 | — |
| Queens, NYNew York | $15.09 | — |
| Rest of New YorkNew York | $11.98 | — |
| OhioOhio | $11.62 | — |
| OklahomaOklahoma | $11.30 | — |
| Portland, OROregon | $13.98 | — |
| Rest of OregonOregon | $12.54 | — |
| Metropolitan Philadelphia, PAPennsylvania | $13.26 | — |
| Rest of PennsylvaniaPennsylvania | $11.66 | — |
| Puerto RicoPuerto Rico | $12.82 | — |
| Rhode IslandRhode Island | $13.06 | — |
| South CarolinaSouth Carolina | $11.70 | — |
| South DakotaSouth Dakota | $12.47 | — |
| TennesseeTennessee | $11.41 | — |
| Austin, TXTexas | $13.37 | — |
| Beaumont, TXTexas | $11.56 | — |
| Brazoria, TXTexas | $12.51 | — |
| Dallas, TXTexas | $12.60 | — |
| Fort Worth, TXTexas | $12.48 | — |
| Galveston, TXTexas | $12.55 | — |
| Houston, TXTexas | $12.73 | — |
| Rest of TexasTexas | $12.03 | — |
| UtahUtah | $11.92 | — |
| VirginiaVirginia | $12.38 | — |
| Virgin Islands, VIUnited States Virgin Islands | $12.82 | — |
| VermontVermont | $12.40 | — |
| Rest of WashingtonWashington | $13.27 | — |
| King County, WAWashington | $15.44 | — |
| WisconsinWisconsin | $11.94 | — |
| West VirginiaWest Virginia | $11.22 | — |
| WyomingWyoming | $12.61 | — |
G0237 rates by state
Office rate range in each state. Select a state to see its payment localities.
Explore a state
Local rates. Clear comparisons.
Hover or focus a tile to see its rate range. Select it to open the state’s fee schedule.
$10.79
$15.86
Color shows the midpoint of each state’s locality range.
View every state and territory as a table
| State / territory | Office rate range | Localities |
|---|---|---|
| AK | $13.35 | 1 |
| AL | $11.00 | 1 |
| AR | $10.79 | 1 |
| AZ | $12.26 | 1 |
| CA | $13.72–$18.00 | 29 |
| CO | $13.41 | 1 |
| CT | $13.71 | 1 |
| DC | $14.93 | 1 |
| DE | $12.51 | 1 |
| FL | $12.32–$13.71 | 3 |
| GA | $11.42–$12.96 | 2 |
| GU | $14.24 | 1 |
| HI | $14.24 | 1 |
| IA | $11.44 | 1 |
| ID | $11.53 | 1 |
| IL | $11.81–$13.28 | 4 |
| IN | $11.62 | 1 |
| KS | $11.34 | 1 |
| KY | $11.29 | 1 |
| LA | $11.26–$12.01 | 2 |
| MA | $13.28–$15.05 | 2 |
| MD | $12.81–$14.93 | 3 |
| ME | $11.58–$12.46 | 2 |
| MI | $11.66–$12.49 | 2 |
| MN | $12.82 | 1 |
| MO | $10.98–$12.10 | 3 |
| MS | $10.89 | 1 |
| MT | $12.69 | 1 |
| NC | $11.74 | 1 |
| ND | $12.49 | 1 |
| NE | $11.53 | 1 |
| NH | $13.16 | 1 |
| NJ | $13.86–$14.69 | 2 |
| NM | $11.73 | 1 |
| NV | $12.65 | 1 |
| NY | $11.98–$15.31 | 5 |
| OH | $11.62 | 1 |
| OK | $11.30 | 1 |
| OR | $12.54–$13.98 | 2 |
| PA | $11.66–$13.26 | 2 |
| PR | $12.82 | 1 |
| RI | $13.06 | 1 |
| SC | $11.70 | 1 |
| SD | $12.47 | 1 |
| TN | $11.41 | 1 |
| TX | $11.56–$13.37 | 8 |
| UT | $11.92 | 1 |
| VA | $12.38–$14.93 | 2 |
| VI | $12.82 | 1 |
| VT | $12.40 | 1 |
| WA | $13.27–$15.44 | 2 |
| WI | $11.94 | 1 |
| WV | $11.22 | 1 |
| WY | $12.61 | 1 |
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.
The exact Iowa inputs and CMS source lines
PPRRVU2026_Oct_nonQPP.csv
15,142
- Code
- G0237
- Physician work
- 0.00
- Practice expense
- 0.37
- Malpractice
- 0.01
GPCI2026.csv
53
- Locality
- Iowa
- Physician work
- 1.000
- Practice expense
- 0.915
- Malpractice
- 0.397
| Component | RVU | Locality factor | Adjusted |
|---|---|---|---|
| Physician work | 0.00 | × 1.000 | 0.0000 |
| Practice expense | 0.37 | × 0.915 | 0.3386 |
| Malpractice | 0.01 | × 0.397 | 0.0040 |
| Total RVUs | 0.3425 | ||
| Conversion factor | × 33.4009 | ||
Office rate, Iowa$11.44
Office: (0 × 1 + 0.37 × 0.915 + 0.01 × 0.397) × $33.4009 = $11.44
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. |
How G0237 has changed in Iowa
G0237 · Office / nonfacility
$11.44
Effective 2026-10-01
The base rate is $1.25 higher than on 2025-10-01, moving from $10.19 to $11.44 (12.3%).
It is unchanged from the immediately preceding available release, effective 2026-07-01.
One bar per available release, ordered by effective date. Missing rates remain gaps. These comparisons hold the code, setting and locality identifiers constant; they do not isolate which policy or input caused a change.
What changed, release by release
January 1, 2026
RVU26A
$10.19changed to$11.44
- Conversion factor 32.3465 changed to 33.4009
- Practice expense RVU 0.34 changed to 0.37
- Practice expense GPCI 0.913 changed to 0.915
- Malpractice GPCI 0.457 changed to 0.397
Held through RVU26B, RVU26C, RVU26D.
January 1, 2025
RVU25A
$10.18changed to$10.19
- Conversion factor 33.2875 changed to 32.3465
- Practice expense RVU 0.33 changed to 0.34
Held through RVU25B, RVU25C, RVU25D.
March 9, 2024
RVU24AR
$10.02changed to$10.18
- Conversion factor 32.7442 changed to 33.2875
Held through RVU24B, RVU24C, RVU24D.
January 1, 2024
RVU24A
$9.71changed to$10.02
- Conversion factor 33.8872 changed to 32.7442
- Practice expense RVU 0.31 changed to 0.33
- Practice expense GPCI 0.910 changed to 0.913
- Malpractice GPCI 0.441 changed to 0.457
January 1, 2023
RVU23A
$9.25changed to$9.71
- Conversion factor 34.6062 changed to 33.8872
- Practice expense RVU 0.29 changed to 0.31
- Practice expense GPCI 0.907 changed to 0.910
- Malpractice GPCI 0.425 changed to 0.441
Held through RVU23B, RVU23C, RVU23D.
January 1, 2022
RVU22A
$8.69changed to$9.25
- Conversion factor 34.8931 changed to 34.6062
- Practice expense RVU 0.27 changed to 0.29
Held through RVU22B, RVU22C, RVU22D.
January 1, 2021
RVU21A
$8.34changed to$8.69
- Conversion factor 36.0896 changed to 34.8931
- Practice expense RVU 0.25 changed to 0.27
- Malpractice GPCI 0.424 changed to 0.425
Held through RVU21B, RVU21C, RVU21D.
January 1, 2020
RVU20A
$8.65changed to$8.34
- Conversion factor 36.0391 changed to 36.0896
- Practice expense RVU 0.26 changed to 0.25
- Malpractice GPCI 0.423 changed to 0.424
Held through RVU20B, RVU20C, RVU20D.
January 1, 2019
RVU19A
$8.97changed to$8.65
- Conversion factor 35.9996 changed to 36.0391
- Practice expense RVU 0.27 changed to 0.26
Held through RVU19B, RVU19C, RVU19D.
January 1, 2018
RVU18AR1
$8.90changed to$8.97
- Conversion factor 35.8887 changed to 35.9996
- Practice expense GPCI 0.902 changed to 0.907
- Malpractice GPCI 0.458 changed to 0.423
Held through RVU18B, RVU18C, RVU18D.
January 1, 2017
RVU17A
$8.84changed to$8.90
- Conversion factor 35.8043 changed to 35.8887
- Practice expense GPCI 0.896 changed to 0.902
- Malpractice GPCI 0.493 changed to 0.458
Held through RVU17B, RVU17C, RVU17D.
January 1, 2016
RVU16A
$9.19changed to$8.84
- Conversion factor 35.9335 changed to 35.8043
- Practice expense RVU 0.28 changed to 0.27
Held through RVU16B, RVU16C, RVU16D.
July 1, 2015
RVU15C
$9.15changed to$9.19
- Conversion factor 35.7547 changed to 35.9335
Held through RVU15D.
January 1, 2015
RVU15A
$8.80changed to$9.15
- Conversion factor 35.8228 changed to 35.7547
- Practice expense RVU 0.27 changed to 0.28
- Practice expense GPCI 0.892 changed to 0.896
- Malpractice GPCI 0.475 changed to 0.493
Held through RVU15B.
January 1, 2014
RVU14A
$9.51changed to$8.80
- Conversion factor 34.0230 changed to 35.8228
- Practice expense RVU 0.31 changed to 0.27
- Practice expense GPCI 0.887 changed to 0.892
- Malpractice GPCI 0.456 changed to 0.475
Held through RVU14B, RVU14C, RVU14D.
January 1, 2013
RVU13AR
Earliest loaded release: $9.51
Held through RVU13B, RVU13C, RVU13D.
| Effective from | Office | Facility | CMS release |
|---|---|---|---|
| 2026-10-01 | $11.44 | Not available in this setting | RVU26D |
| 2026-07-01 | $11.44 | Not available in this setting | RVU26C |
| 2026-04-01 | $11.44 | Not available in this setting | RVU26B |
| 2026-01-01 | $11.44 | Not available in this setting | RVU26A |
| 2025-10-01 | $10.19 | Not available in this setting | RVU25D |
| 2025-07-01 | $10.19 | Not available in this setting | RVU25C |
| 2025-04-01 | $10.19 | Not available in this setting | RVU25B |
| 2025-01-01 | $10.19 | Not available in this setting | RVU25A |
| 2024-10-01 | $10.18 | Not available in this setting | RVU24D |
| 2024-07-01 | $10.18 | Not available in this setting | RVU24C |
| 2024-04-01 | $10.18 | Not available in this setting | RVU24B |
| 2024-03-09 | $10.18 | Not available in this setting | RVU24AR |
| 2024-01-01 | $10.02 | Not available in this setting | RVU24A |
| 2023-10-01 | $9.71 | Not available in this setting | RVU23D |
| 2023-07-01 | $9.71 | Not available in this setting | RVU23C |
| 2023-04-01 | $9.71 | Not available in this setting | RVU23B |
| 2023-01-01 | $9.71 | Not available in this setting | RVU23A |
| 2022-10-01 | $9.25 | Not available in this setting | RVU22D |
| 2022-07-01 | $9.25 | Not available in this setting | RVU22C |
| 2022-04-01 | $9.25 | Not available in this setting | RVU22B |
| 2022-01-01 | $9.25 | Not available in this setting | RVU22A |
| 2021-10-01 | $8.69 | Not available in this setting | RVU21D |
| 2021-07-01 | $8.69 | Not available in this setting | RVU21C |
| 2021-04-01 | $8.69 | Not available in this setting | RVU21B |
| 2021-01-01 | $8.69 | Not available in this setting | RVU21A |
| 2020-10-01 | $8.34 | Not available in this setting | RVU20D |
| 2020-07-01 | $8.34 | Not available in this setting | RVU20C |
| 2020-04-01 | $8.34 | Not available in this setting | RVU20B |
| 2020-01-01 | $8.34 | Not available in this setting | RVU20A |
| 2019-10-01 | $8.65 | Not available in this setting | RVU19D |
| 2019-07-01 | $8.65 | Not available in this setting | RVU19C |
| 2019-04-01 | $8.65 | Not available in this setting | RVU19B |
| 2019-01-01 | $8.65 | Not available in this setting | RVU19A |
| 2018-10-01 | $8.97 | Not available in this setting | RVU18D |
| 2018-07-01 | $8.97 | Not available in this setting | RVU18C |
| 2018-04-01 | $8.97 | Not available in this setting | RVU18B |
| 2018-01-01 | $8.97 | Not available in this setting | RVU18AR1 |
| 2017-10-01 | $8.90 | Not available in this setting | RVU17D |
| 2017-07-01 | $8.90 | Not available in this setting | RVU17C |
| 2017-04-01 | $8.90 | Not available in this setting | RVU17B |
| 2017-01-01 | $8.90 | Not available in this setting | RVU17A |
| 2016-10-01 | $8.84 | Not available in this setting | RVU16D |
| 2016-07-01 | $8.84 | Not available in this setting | RVU16C |
| 2016-04-01 | $8.84 | Not available in this setting | RVU16B |
| 2016-01-01 | $8.84 | Not available in this setting | RVU16A |
| 2015-10-01 | $9.19 | Not available in this setting | RVU15D |
| 2015-07-01 | $9.19 | Not available in this setting | RVU15C |
| 2015-04-01 | $9.15 | Not available in this setting | RVU15B |
| 2015-01-01 | $9.15 | Not available in this setting | RVU15A |
| 2014-10-01 | $8.80 | Not available in this setting | RVU14D |
| 2014-07-01 | $8.80 | Not available in this setting | RVU14C |
| 2014-04-01 | $8.80 | Not available in this setting | RVU14B |
| 2014-01-01 | $8.80 | Not available in this setting | RVU14A |
| 2013-10-01 | $9.51 | Not available in this setting | RVU13D |
| 2013-07-01 | $9.51 | Not available in this setting | RVU13C |
| 2013-04-01 | $9.51 | Not available in this setting | RVU13B |
| 2013-01-01 | $9.51 | Not available in this setting | RVU13AR |
Where the Iowa rate applies
Iowa is a Medicare payment area, not a city. Our Census mapping connects it to 1026 cities and communities in Iowa. Some span more than one payment area; confirm with the service ZIP.
- Ackley
- Ackworth
- Adair
- Adel
- Afton
- Agency
- Ainsworth
- Akron
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.
CMS RVU26D · effective Oct 1, 2026 through the day before Jan 1, 2027
Show the CMS file lines behind this rate
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