US · guidance
CMS Pub. 100-04, ch. 27, § 50
Requesting or Providing Assistance to Resolve CWF Rejects
When a MAC has difficulty processing a bill because a prior bill was incorrectly
processed and posted to CWF by another MAC (A/B MAC or DME MAC), the two A/B
MACs or DME MACs must work together to resolve the error. Where help is needed
from another A/B MAC or DME MAC, the submitting MAC requests assistance from the
contractor whose bill was processed incorrectly. The A/B MAC or DME MAC that
processed the bill is identified in the CWF reject trailer.
History
(Rev. 4009, Issued: 03-23-18, Effective: 04-23-18, Implementation: 04-23-18)
Provenance
- Source
- cms.gov
- Retrieved
- 2026-08-25
- Edition
- iom-2026-08-25
- Content hash
1231f33521b4f838de599b5e9c0a93d6060515830a97e940c25966e81a79bc65
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