For respiratory rehabilitation services, do you have any tips on billing single and multiple units relative to the time increments?


The therapist should bill a single 15-minute unit for treatment greater than or equal to 8 minutes and less than 23 minutes. If the duration of a single modality or procedure is > 23 minutes and < 38 minutes, then two units should be billed, and additional units are reported based on graduated increments of time. In all instances, the documentation in the medical record must support the duration and necessity of the time billed.

This question was answered in our Coding Essentials for RT/Pulmonary Function. For more hot topics relating to respiratory services, please visit our store or call us at 1.800.252.1578, ext. 2.


CPT® copyright 2021 American Medical Association (AMA). All rights reserved.

Fee schedules, relative value units, conversion factors and/or related components are not assigned by the AMA, are not part of CPT, and the AMA is not recommending their use. The AMA does not directly or indirectly practice medicine or dispense medical services. The AMA assumes no liability for data contained or not contained herein.

CPT is a registered trademark of the American Medical Association.