HCPCS Code E0431: Portable Gaseous Oxygen System, Rental

Yes, when the patient qualifies for both a stationary concentrator and a portable gaseous system. The chart must show medical necessity for mobility with portable oxygen and a stationary prescription for home use. Avoid pairing E0431 with K0738 on the same claim because that combination is incorrect coding.

Portable concentrators are billed as E1392. Coverage depends on qualifying test results, documented mobility needs, and the plan’s policy. Some payers approve concentrators when the medical record supports the choice, while others prefer cylinders for portability.

Patients typically qualify by meeting hypoxemia criteria on testing and by demonstrating a need for mobility outside the home. A detailed prescription, proof of training, and documentation of ongoing use are required, along with any prior authorization steps that the plan mandates.