# CPT 94645: Continuous inhalation treatment, each additional hour (add-on)

Medicare CPT 94645 pays $16.70 in a non-facility setting and $16.70 in a facility setting under the 2026 Medicare Physician Fee Schedule, before geographic adjustment. After geographic adjustment, state amounts run from $14.23 in Arkansas to $19.65 in District of Columbia, a 38% spread.

Web page: https://www.med-reveal.com/rates/94645-cpt-fee-schedule
Section: Medical and Therapeutic Services

## Medicare rates

| | Amount |
| --- | --- |
| National non-facility | $16.70 |
| National facility | $16.70 |
| Conversion factor | 33.4009 |
| Release | 2026 Q4 (effective 2026-10-01) |

## By state

| State | Non-facility | Facility |
| --- | --- | --- |
| District of Columbia | $19.65 | $19.65 |
| California | $19.55 | $19.55 |
| Washington | $18.92 | $18.92 |
| Hawaii | $18.80 | $18.80 |
| New Jersey | $18.79 | $18.79 |
| New York | $18.71 | $18.71 |
| Massachusetts | $18.67 | $18.67 |
| Connecticut | $18.03 | $18.03 |
| Colorado | $17.67 | $17.67 |
| Alaska | $17.61 | $17.61 |
| Oregon | $17.49 | $17.49 |
| Maryland | $17.42 | $17.42 |
| New Hampshire | $17.33 | $17.33 |
| Rhode Island | $17.20 | $17.20 |
| Florida | $17.07 | $17.07 |
| Minnesota | $16.94 | $16.94 |
| Puerto Rico | $16.88 | $16.88 |
| Virgin Islands | $16.88 | $16.88 |
| Montana | $16.70 | $16.70 |
| Nevada | $16.66 | $16.66 |
| Wyoming | $16.61 | $16.61 |
| North Dakota | $16.50 | $16.50 |
| South Dakota | $16.48 | $16.48 |
| Delaware | $16.47 | $16.47 |
| Illinois | $16.45 | $16.45 |
| Texas | $16.42 | $16.42 |
| Pennsylvania | $16.39 | $16.39 |
| Vermont | $16.37 | $16.37 |
| Virginia | $16.32 | $16.32 |
| Arizona | $16.14 | $16.14 |
| Georgia | $16.02 | $16.02 |
| Maine | $15.85 | $15.85 |
| Michigan | $15.84 | $15.84 |
| Wisconsin | $15.78 | $15.78 |
| Utah | $15.68 | $15.68 |
| North Carolina | $15.48 | $15.48 |
| New Mexico | $15.41 | $15.41 |
| South Carolina | $15.41 | $15.41 |
| Missouri | $15.35 | $15.35 |
| Indiana | $15.33 | $15.33 |
| Louisiana | $15.29 | $15.29 |
| Ohio | $15.28 | $15.28 |
| Nebraska | $15.23 | $15.23 |
| Idaho | $15.22 | $15.22 |
| Iowa | $15.11 | $15.11 |
| Tennessee | $15.06 | $15.06 |
| Kansas | $14.96 | $14.96 |
| Oklahoma | $14.87 | $14.87 |
| Kentucky | $14.86 | $14.86 |
| West Virginia | $14.70 | $14.70 |
| Alabama | $14.51 | $14.51 |
| Mississippi | $14.34 | $14.34 |
| Arkansas | $14.23 | $14.23 |

## Related codes

- 94002: Ventilation assist management, hospital inpatient, initial day — https://www.med-reveal.com/rates/94002-cpt-fee-schedule
- 94003: Ventilation assist management, hospital inpatient, each subsequent day — https://www.med-reveal.com/rates/94003-cpt-fee-schedule
- 94010: Spirometry, including graphic record — https://www.med-reveal.com/rates/94010-cpt-fee-schedule
- 94060: Bronchodilation responsiveness, spirometry pre and post — https://www.med-reveal.com/rates/94060-cpt-fee-schedule
- 94070: Bronchospasm provocation evaluation, multiple spirometric determinations — https://www.med-reveal.com/rates/94070-cpt-fee-schedule
- 94150: Vital capacity, total (separate procedure) — https://www.med-reveal.com/rates/94150-cpt-fee-schedule
- 94200: Maximum breathing capacity, maximal voluntary ventilation — https://www.med-reveal.com/rates/94200-cpt-fee-schedule
- 94375: Respiratory flow volume loop — https://www.med-reveal.com/rates/94375-cpt-fee-schedule

Commercial negotiated rates for 94645 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