Question:

How is oxygen billed to Medicare?

Answer:

There is no CPT® code for oxygen. Do not bill for oxygen using the unlisted CPT code 94799. Bill it with the revenue code 0271, designating it as a supply. It must be billed in “measurable” units, such as per liter, per hour, per quarter hour, per minute. There must be a written order for the oxygen. “PRN Oxygen” is not satisfactory for Medicare reimbursement.


CPT® is a registered trademark of the American Medical Association.

This question was answered in the 2018 edition of our Coding Essentials for RT/Pulmonary Function. For more hot topics relating to respiratory therapy services, please view our store, or call us at 1.800.252.1578 ext. 2.

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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.