Find a Commonwealth Resource
Unified Medical Language System (UMLS)
HealthData.Gov
Updated Oct 29, 2026
About this dataset
The UMLS integrates and distributes key terminology, classification and coding standards, and associated resources to promote creation of more effective and interoperable biomedical information systems and services, including electronic health records.
Data and resources (4)
- HTML
Download UMLS Data - Knowledge Sources
Modified Jun 29, 2026
- HTML
API
The UTS API is intended for application developers to perform Web service calls and retrieve UMLS data within their own applications. The UTS API provides the ability to search, retrieve, and filter terms, concepts, attributes, relations, metadata and more from over 160 vocabularies of the UMLS…
Modified Jun 29, 2026
- HTML
Search UMLS Metathesaurus
Modified Jun 29, 2026
- HTML
Download UMLS Data - Vocabulary Standards and Mappings
Modified Jun 29, 2026