# CPT 94400: Breathing response to CO2

Medicare does not publish a national rate for CPT 94400; it is priced locally or only by commercial payers.

Web page: https://www.med-reveal.com/rates/94400-cpt-fee-schedule
Section: Medical and Therapeutic Services


## 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 94400 by payer and state: https://www.med-reveal.com/solutions/rate-benchmarking

## Sources

- CMS Medicare fee schedules: https://www.cms.gov/medicare/payment/fee-schedules