US · guidance
CMS Pub. 100-05, ch. 5, § 40.2
Update CWF MSP Auxiliary File
When an A/B MAC and DME MAC has identified a beneficiary under §40.1.2.1 and the A/B MAC
and DME MAC has notified the beneficiary in writing that Medicare does not pay for services
obtained outside of the plan or there is information that the beneficiary was previously notified, the
A/B MAC and DME MAC must update its internal system to show that the beneficiary is a working
aged, ESRD, or disabled beneficiary and belongs to a managed care GHP and that the beneficiary has
been notified that Medicare will not pay. This is accomplished by entering the following information
in remarks:
“Working aged, ESRD, or disabled beneficiary belongs to a managed care GHP. Medicare
will not pay.”
History
(Rev. 11550; Issued: 08 -12-22; Effective: 10 -13-22; Implementation:10 -13-22)
Provenance
- Source
- cms.gov
- Retrieved
- 2026-08-25
- Edition
- iom-2026-08-25
- Content hash
15642b7c8d085bc5b906c23b573921a1a990fe29b6ec23460a0dab2e9b8934d8
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