US · guidance
CMS Pub. 100-04, ch. 27, § 30.2
CWF Provider Queries - Online Eligibility Information for
Medicare Part A Providers
(Rev. 4009, Issued: 03-23-18, Effective: 04-23-18, Implementation: 04-23-18)
The CWF will provide access to the Part “A” Eligibility System. MAC and/or Medicare
Part A Providers can request the beneficiary master information from the CWF host via
HIQA/ELGA and HIQH/ELGH inquiry screens to obtain the information. The
information can also be requested though unformatted query, HUQA. These functions are
for display of information only. The user at the MAC and/or Provider site cannot make
changes to the screens accessed through eligibility system.
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
af92aef8705e7fafd3d5cfeaaa5cb35f3016fa88e85689a23449cf359374d9dd
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