# CPT 91034: Esophageal pH monitoring, prolonged, catheter placement

Medicare CPT 91034 pays $202.41 in a non-facility setting and $202.41 in a facility setting under the 2026 Medicare Physician Fee Schedule, before geographic adjustment. After geographic adjustment, state amounts run from $177.42 in Arkansas to $234.33 in District of Columbia, a 32% spread.

Web page: https://www.med-reveal.com/rates/91034-cpt-fee-schedule
Section: Medical and Therapeutic Services
Billed by: Gastroenterology

## Medicare rates

| | Amount |
| --- | --- |
| National non-facility | $202.41 |
| National facility | $202.41 |
| Conversion factor | 33.4009 |
| Release | 2026 Q4 (effective 2026-10-01) |

## By state

| State | Non-facility | Facility |
| --- | --- | --- |
| District of Columbia | $234.33 | $234.33 |
| California | $233.12 | $233.12 |
| Alaska | $228.00 | $228.00 |
| Washington | $226.37 | $226.37 |
| New Jersey | $225.43 | $225.43 |
| Hawaii | $224.30 | $224.30 |
| New York | $224.30 | $224.30 |
| Massachusetts | $223.65 | $223.65 |
| Connecticut | $216.54 | $216.54 |
| Colorado | $212.96 | $212.96 |
| Oregon | $210.91 | $210.91 |
| Maryland | $210.17 | $210.17 |
| New Hampshire | $208.96 | $208.96 |
| Rhode Island | $208.27 | $208.27 |
| Florida | $205.50 | $205.50 |
| Minnesota | $205.40 | $205.40 |
| Puerto Rico | $204.22 | $204.22 |
| Virgin Islands | $204.22 | $204.22 |
| Montana | $202.40 | $202.40 |
| Nevada | $202.13 | $202.13 |
| Wyoming | $201.71 | $201.71 |
| North Dakota | $200.82 | $200.82 |
| South Dakota | $200.64 | $200.64 |
| Delaware | $200.28 | $200.28 |
| Texas | $199.79 | $199.79 |
| Pennsylvania | $199.44 | $199.44 |
| Vermont | $199.41 | $199.41 |
| Illinois | $199.28 | $199.28 |
| Virginia | $198.77 | $198.77 |
| Arizona | $196.82 | $196.82 |
| Georgia | $195.26 | $195.26 |
| Maine | $193.94 | $193.94 |
| Wisconsin | $193.50 | $193.50 |
| Michigan | $193.25 | $193.25 |
| Utah | $192.06 | $192.06 |
| North Carolina | $190.19 | $190.19 |
| South Carolina | $189.24 | $189.24 |
| New Mexico | $189.00 | $189.00 |
| Indiana | $188.77 | $188.77 |
| Missouri | $188.54 | $188.54 |
| Louisiana | $187.92 | $187.92 |
| Nebraska | $187.81 | $187.81 |
| Ohio | $187.81 | $187.81 |
| Idaho | $187.56 | $187.56 |
| Iowa | $186.52 | $186.52 |
| Tennessee | $185.88 | $185.88 |
| Kansas | $184.96 | $184.96 |
| Oklahoma | $183.84 | $183.84 |
| Kentucky | $183.53 | $183.53 |
| West Virginia | $181.55 | $181.55 |
| Alabama | $180.25 | $180.25 |
| Mississippi | $178.36 | $178.36 |
| Arkansas | $177.42 | $177.42 |

## 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
- 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
- 91040: Esophageal balloon distension provocation study — https://www.med-reveal.com/rates/91040-cpt-fee-schedule

Commercial negotiated rates for 91034 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