# CPT 91133: Electrogastrography, diagnostic, transcutaneous, with provocative testing

Medicare CPT 91133 pays $508.36 in a non-facility setting and $508.36 in a facility setting under the 2026 Medicare Physician Fee Schedule, before geographic adjustment. After geographic adjustment, state amounts run from $439.35 in Arkansas to $597.74 in California, a 36% spread.

Web page: https://www.med-reveal.com/rates/91133-cpt-fee-schedule
Section: Medical and Therapeutic Services

## Medicare rates

| | Amount |
| --- | --- |
| National non-facility | $508.36 |
| National facility | $508.36 |
| Conversion factor | 33.4009 |
| Release | 2026 Q4 (effective 2026-10-01) |

## By state

| State | Non-facility | Facility |
| --- | --- | --- |
| California | $597.74 | $597.74 |
| District of Columbia | $596.13 | $596.13 |
| Washington | $576.87 | $576.87 |
| Hawaii | $574.52 | $574.52 |
| New Jersey | $570.78 | $570.78 |
| Massachusetts | $568.84 | $568.84 |
| New York | $565.91 | $565.91 |
| Alaska | $550.19 | $550.19 |
| Connecticut | $546.42 | $546.42 |
| Colorado | $539.50 | $539.50 |
| Oregon | $534.26 | $534.26 |
| Maryland | $529.38 | $529.38 |
| New Hampshire | $528.16 | $528.16 |
| Rhode Island | $524.70 | $524.70 |
| Minnesota | $521.75 | $521.75 |
| Puerto Rico | $513.69 | $513.69 |
| Virgin Islands | $513.69 | $513.69 |
| Florida | $510.93 | $510.93 |
| Nevada | $508.68 | $508.68 |
| Montana | $508.36 | $508.36 |
| Wyoming | $508.10 | $508.10 |
| North Dakota | $507.77 | $507.77 |
| South Dakota | $507.70 | $507.70 |
| Vermont | $503.01 | $503.01 |
| Delaware | $502.54 | $502.54 |
| Texas | $500.88 | $500.88 |
| Virginia | $499.81 | $499.81 |
| Pennsylvania | $498.67 | $498.67 |
| Arizona | $493.15 | $493.15 |
| Illinois | $492.95 | $492.95 |
| Wisconsin | $487.26 | $487.26 |
| Maine | $486.36 | $486.36 |
| Georgia | $486.24 | $486.24 |
| Michigan | $479.13 | $479.13 |
| Utah | $479.10 | $479.10 |
| North Carolina | $475.44 | $475.44 |
| Indiana | $472.37 | $472.37 |
| South Carolina | $471.28 | $471.28 |
| Nebraska | $470.32 | $470.32 |
| Idaho | $468.95 | $468.95 |
| Missouri | $468.33 | $468.33 |
| New Mexico | $468.23 | $468.23 |
| Iowa | $466.45 | $466.45 |
| Louisiana | $466.13 | $466.13 |
| Ohio | $466.09 | $466.09 |
| Tennessee | $463.67 | $463.67 |
| Kansas | $461.21 | $461.21 |
| Oklahoma | $456.14 | $456.14 |
| Kentucky | $454.33 | $454.33 |
| Alabama | $447.18 | $447.18 |
| West Virginia | $445.13 | $445.13 |
| Mississippi | $440.55 | $440.55 |
| Arkansas | $439.35 | $439.35 |

## Related codes

- 91010: Esophageal motility study — https://www.med-reveal.com/rates/91010-cpt-fee-schedule
- 91013: Esophageal motility study with stimulation or perfusion (add-on) — https://www.med-reveal.com/rates/91013-cpt-fee-schedule
- 91020: Gastric motility studies — https://www.med-reveal.com/rates/91020-cpt-fee-schedule
- 91022: Duodenal motility study — https://www.med-reveal.com/rates/91022-cpt-fee-schedule
- 91030: Esophagus, acid perfusion (Bernstein) test — https://www.med-reveal.com/rates/91030-cpt-fee-schedule
- 91034: Esophageal pH monitoring, prolonged, catheter placement — https://www.med-reveal.com/rates/91034-cpt-fee-schedule
- 91035: Esophageal pH monitoring, prolonged, mucosal attached telemetry — https://www.med-reveal.com/rates/91035-cpt-fee-schedule
- 91038: Esophageal function test, prolonged, greater than 1 hour — https://www.med-reveal.com/rates/91038-cpt-fee-schedule

Commercial negotiated rates for 91133 by payer and state: https://www.med-reveal.com/solutions/rate-benchmarking

## Sources

- CMS Medicare fee schedules (2026 Q4): https://www.cms.gov/medicare/payment/fee-schedules