Classification

• The National Library of Medicine Classification is published online. The NLM Classification has been updated as of January 31, 2023. See NLM Technical Bulletin 2023 Jan–Feb;(450):e5
  
  For a brief explanatory discussion, follow this link to the National Library of Medicine Classification. For geographic notation, see the following section:
  
  --Table G Practices
  --Table G (geographic notation)
  
  Outline of Schedules: see online NLM Classification.

Downloading the NLM Classification

The National Library of Medicine Classification is available for download in PDF.

Note: The National Library of Medicine Classification is no longer available as a print publication.

• NLM Policy on Subject Analysis and Classification html | pdf
• Accession number shelving of printed monographs
  See NLM Technical Bulletin, Jan/Feb 1994 (pages 19-20).
• Accession Number Shelving of Non-Print Materials
  See NLM Technical Bulletin 2004 Nov-Dec;(341):e5.

Shelflisting

• Shelflisting Procedures for Monographs and Classed Serials
• Shelflisting Procedures and Policies for W1, W2, and WX 2 serials
  
  

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Last Reviewed: February 3, 2023