NLM Classification

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

Data and Resources

Field Value
accessLevel public
bureauCode {009:25}
catalog_@context https://project-open-data.cio.gov/v1.1/schema/catalog.jsonld
catalog_@id https://healthdata.gov/data.json
catalog_conformsTo https://project-open-data.cio.gov/v1.1/schema
catalog_describedBy https://project-open-data.cio.gov/v1.1/schema/catalog.json
identifier https://datadiscovery.nlm.nih.gov/api/views/a7sv-mxd2
issued 2021-08-26
landingPage https://classification.nlm.nih.gov/
license http://opendefinition.org/licenses/odc-odbl/
modified 2022-05-25
programCode {009:041}
publisher National Library of Medicine
resource-type Dataset
source_datajson_identifier true
source_hash 3eed56e67eef4c0d8a9b94626d593c8577dc0452
source_schema_version 1.1
theme {"NLM Products and Services"}
Groups
  • AmeriGEOSS
  • National Provider
  • North America
Tags
  • amerigeo
  • amerigeoss
  • ckan
  • classification
  • dataset
  • geo
  • geoss
  • library-services
  • national
  • north-america
  • united-states
isopen False
license_id other-license-specified
license_title other-license-specified
maintainer National Library of Medicine
maintainer_email custserv@nlm.nih.gov
metadata_created 2025-11-21T17:12:06.843484
metadata_modified 2025-11-21T17:12:06.843488
notes 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
num_resources 7
num_tags 11
title NLM Classification