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Dot gov

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Https

Secure .gov websites use HTTPS
A lock ( ) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.

identifier

A QDM attribute provides specific detail about a QDM datatype.

Performance/Reporting Period
2025
QDM Datatype (QDM Version 5.6):
External identifiers for the QDM entity (Patient, Care Partner, Practitioner or Organization) and the QDM datatype "Related Person". Unless specified in program or measure-specific guidance, eCQMs generally allow implementers to use local identifiers for such individuals or organizations. Program or measure-specific guidance may specify a required identification system (e.g., National Provider Identifier [NPI] for practitioners, or CMS Certification Number [CCN] for hospitals).
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