The Value Set Authority Center (VSAC) provides value set search, retrieval and download capabilities through a  web interface and APIs . The VSAC provides authoring and validation tools for creating new and revising published value sets. The VSAC also integrates a Collaboration Tool for value set authors and their collaborators and subject matter experts to collectively discuss and approve their value sets.

The VSAC currently serves as the authority and central repository for the official versions of value sets that support  Centers for Medicare & Medicaid (CMS) Electronic Clinical Quality Measure (eCQM) value sets.

Through the VSAC, NLM draws upon its responsibility as the central coordinating body for clinical terminology standards within the Department of Health and Human Services (HHS) to assure the ongoing validity and accuracy of the value sets.

Last Reviewed: February 23, 2024