Skip to main content
U.S. flag

An official website of the United States government

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

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.

Skip to content
  • Feedback

    • NLM Classification

    Metadata Updated: June 19, 2025

    A product of the National Library of Medicine for the arrangement of library materials in the field of medicine and related sciences used internationally. The NLM Classification is updated twice a year with the winter edition published in January and the summer edition published in August. Publication of printed editions ceased with the 5th revised edition, 1999. Beginning with the 2006 edition, the NLM Classification is also available in PDF (Portable Document Format) at https://www.nlm.nih.gov/class/terms_cond.html

    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 2, 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 2, 2022
    Metadata Updated Date June 19, 2025
    Publisher National Library of Medicine
    Maintainer
    Identifier https://datadiscovery.nlm.nih.gov/api/views/a7sv-mxd2
    Data First Published 2021-08-26
    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 b7327665-2eb3-4ac3-965e-f5defb51699a
    Harvest Source Id 651e43b2-321c-4e4c-b86a-835cfc342cb0
    Harvest Source Title Healthdata.gov
    Homepage URL https://classification.nlm.nih.gov/
    License http://opendefinition.org/licenses/odc-odbl/
    Program Code 009:041
    Source Datajson Identifier True
    Source Hash 86b639fb1f726be714d82aca8eb649eb92fe9118fee031febf6fc64eacc32013
    Source Schema Version 1.1

    Didn't find what you're looking for? Suggest a dataset here.