What is the CPT code for oxygen? 


There is no CPT code for oxygen, which is classified as a medical supply under Medicare Part A

and Part B, and providers are reimbursed for it on the basis of reasonable cost.. Bill it with the revenue code 0271, designating it as a supply, and bill it in “measurable” units, such as per liter, per hour, per quarter hour, per minute. 

Also, make sure there is a written order for the oxygen. “PRN oxygen” is not satisfactory for Medicare reimbursement. While physicians are accustomed to including this “as needed” descriptor for certain items and services, Medicare guidelines specifically prohibit payment for oxygen used and ordered only on a PRN basis.


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