How is oxygen billed to Medicare?
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.