A4575, Topical hyperbaric oxygen chamber, disposable
HCPCS/CPT
Prior Authorization
No Prior Auth Required
Code is covered without prior authorization (high confidence)
Medicare Pricing
Documentation Required
- This article provides billing and coding guidance that complements LCD L37873; any required medical documentation, prior authorizations, or specific claim forms are detailed in L37873 and should be referenced for claims submission.
- A Standard Written Order (SWO) must be communicated to the supplier before a claim is submitted; for DMEPOS base items requiring a Written Order Prior to Delivery (WOPD), the supplier must receive a signed WOPD before delivery or the claim will be denied.
- Proof of delivery (POD) documentation must be maintained by the supplier and made available to the Medicare contractor on request; claims without appropriate POD will be denied.
- Qualifying blood gas studies must comply with MAC policy standards and be performed by a provider qualified to bill Medicare (Part A provider, laboratory, IDTF, or treating practitioner); suppliers may not perform or pay for qualifying blood gas testing.
- Exercise-based qualification requires documentation in the medical record of three oximetry studies performed within the same testing session: (1) rest without oxygen, (2) during exercise without oxygen, and (3) during exercise with oxygen applied; only test #2 is used for qualification and all three results must be available upon request.
- Overnight home oximetry devices must be tamper-proof and capable of downloading data that documents duration of desaturation; baseline saturation is defined as the mean saturation during the recorded test and the home overnight test must record at least 2 hours to meet Group I criterion 3.
Key Coverage Criteria
- This billing and coding article does not itself define clinical indications; follow the Topical Oxygen Therapy Local Coverage Determination L37873 for covered clinical indications for topical oxygen therapy.
- Initial coverage for home oxygen and oxygen equipment is reasonable and necessary only if the treating practitioner ordered and evaluated a qualifying blood gas study performed at the time of need, the study meets the coverage criteria, the study was performed by a treating practitioner or qualified provider/laboratory, and provision of home oxygen is expected to improve the beneficiary’s condition.
- Group I: Coverage if arterial PO2 ≤ 55 mm Hg or arterial oxygen saturation ≤ 88% at rest (awake) breathing room air.
- Group I (sleep-only): Coverage if arterial PO2 ≤ 55 mm Hg or arterial oxygen saturation ≤ 88% during sleep for a beneficiary who demonstrates PO2 ≥ 56 mm Hg or saturation ≥ 89% while awake, with oxygen reasonable and necessary only during sleep.
- Group I (sleep desaturation from baseline): Coverage if during sleep PO2 decreases >10 mm Hg or oxygen saturation decreases >5% from baseline and the decrease is associated with hypoxemia symptoms (e.g., cognitive impairment, nocturnal restlessness), with oxygen reasonable and necessary only during sleep.
- Group I (exercise): Coverage if arterial PO2 ≤ 55 mm Hg or saturation ≤ 88% during exercise for a beneficiary who demonstrates PO2 ≥ 56 mm Hg or saturation ≥ 89% at rest while awake; in this case portable oxygen is reasonable and necessary only while awake and during exercise.
20 Active Policies
PALMETTO-JJ-L37873, Topical Oxygen Therapy
JJ
PALMETTO-JM-L37873, Topical Oxygen Therapy
JM
A56431, Billing and Coding: Topical Oxygen Therapy
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BCBSMT-THE801.003, Hyperbaric Oxygen (HBO2) Therapy
BCBSNM-THE801.003, Hyperbaric Oxygen (HBO2) Therapy
BCBSOK-THE801.003, Hyperbaric Oxygen (HBO2) Therapy
REGENCE-MED14, Hyperbaric Oxygen Therapy
UMR-POL-UMR-hyperbaric-topical-oxygen-therapy, Hyperbaric Oxygen Therapy and Topical Oxygen Therapy
SUREST-POL-SUREST-hyperbaric-topical-oxygen-therapy, Hyperbaric Oxygen Therapy and Topical Oxygen Therapy
CIGNA-0053, Hyperbaric and Topical Oxygen Therapies
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