US · guidance
CMS Pub. 100-04, ch. 20, § 100.2.3.3
A/B MAC (HHH) or DME MAC Review of Oxygen
Certifications
(Rev. 1, 10-01-03)
All claims with initial certifications calling for oxygen flow rates of more than 4 liters per
minute must be reviewed before payment is authorized.
Items Requiring Special Attention –
a. Oxygen Delivery or Supply Prescribed - If the treating physician has specified the
oxygen equipment to be supplied, A/B MACs (A) and (HHH) and DME MACs
ensure that the equipment furnished is consistent with that prescribed.
b. Treating Physician Identification - A/B MACs (A) and (HHH) and DME MACs
must ensure that the CMN or Form CMS-484 has been signed by the treating
physician. A stamped signature is unacceptable. The physician's identification
number must be the Unique Physician Identification Number (UPIN).
History
(Rev. 1, 10-01-03)
Provenance
- Source
- cms.gov
- Retrieved
- 2026-08-25
- Edition
- iom-2026-08-25
- Content hash
d3329eb048edab127bf31c401b768268568374e19811b363c554a1fec755cb32
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