Help
FAQ Frequently Asked Questions (FAQs)

Have a questions about the UMLS? Perhaps it's answered here in the FAQs section.
Training Training

Get an introduction to the UMLS (Web-based Tutorial) or learn the basics of the Unified Medical Language System (UMLS) (4 hour class) (8 hour class) including how to customize the UMLS Metathesaurus for your application, how to incorporate the lexical tools into your system, and other useful details about the UMLS to aid system developers.
ContactUs Contact Us

Questions, comments, or access issues concerning the UMLS Knowledge Sources - custserv@nlm.nih.gov
Listserv ListServ

Details instructions on joining the list service for UMLS related questions.

Last reviewed: 23 October 2008
Last updated: 23 October 2008
First published: 26 March 2004
Metadata| Permanence level: Permanence Not Guaranteed