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    • Unified Medical Language System (UMLS)

    Metadata Updated: June 19, 2025

    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.

    Access & Use Information

    Public: This dataset is intended for public access and use. License: See this page for license information.

    Downloads & Resources

    Dates

    Metadata Created Date March 3, 2022
    Metadata Updated Date June 19, 2025

    Metadata Source

    Harvested from Healthdata.gov

    Other Data Resources

    Additional Metadata

    Resource Type Dataset
    Metadata Created Date March 3, 2022
    Metadata Updated Date June 19, 2025
    Publisher National Library of Medicine
    Maintainer
    Identifier https://datadiscovery.nlm.nih.gov/api/views/9t6e-u9qh
    Data First Published 2016-08-04
    Data Last Modified 2025-06-18
    Category Terminology
    Public Access Level public
    Bureau Code 009:25
    Metadata Context https://project-open-data.cio.gov/v1.1/schema/catalog.jsonld
    Metadata Catalog ID https://healthdata.gov/data.json
    Schema Version https://project-open-data.cio.gov/v1.1/schema
    Catalog Describedby https://project-open-data.cio.gov/v1.1/schema/catalog.json
    Harvest Object Id bb3574cf-7f91-437f-95b2-feaaf3fb6922
    Harvest Source Id 651e43b2-321c-4e4c-b86a-835cfc342cb0
    Harvest Source Title Healthdata.gov
    Homepage URL https://www.nlm.nih.gov/research/umls/
    License http://opendefinition.org/licenses/odc-odbl/
    Program Code 009:041
    Source Datajson Identifier True
    Source Hash 6076da7e22b99639789b3e1a9883289e94c2acdef41f3b907bd3411c46c4f6ff
    Source Schema Version 1.1

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