01/23/09 IHTSDO Launches Global Health Terminology Workbench
01/22/09 New UMLS Downloads Web page.
01/14/09 IHTSDO announces free use of SNOMED CT in low income countries.
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About the UMLS Resources
 Metathesaurus; Semantic Network; SPECIALIST Lexicon and lexical tools; MetamorphoSys

new Downloads
 UMLS Knowledge Sources; RxNorm; SNOMED CT; SNOMED CT Spanish; Mappings; VA/KP Problem List

Knowledge Source Server

Search and browse UMLS Knowledge Sources; Additional tools and resources
New UMLS Knowledge Source Server (UMLSKS) Version 6.0 (beta)
UMLS Knowledge Source Server (UMLSKS) Version 5.0


Documentation

Help
 Training; contact us; FAQs; listserv

Metathesaurus Source Vocabularies

newUMLS Source Release Documentation
SNOMED CT
LOINC
RxNorm
MeSH
List of Sources
Source FAQs
Mappings

More Resources

newUMLS Basics Web-based Tutorial
UMLS News
New Users' Guide to the UMLS
UMLS Community
Webcasts
Metathesaurus License
Tools
Learning Resources
MetaMap Transfer (MMTx)
Archives


Forthcoming UMLS Releases



About The NLM Unified Medical Language System (UMLS) project develops and distributes multi-purpose, electronic "Knowledge Sources" and associated lexical tools for system developers. Researchers will find the UMLS products useful in investigating knowledge representation and retrieval questions.

Last reviewed: 28 January 2009
Last updated: 28 January 2009
First published: 01 January 1999
Metadata| Permanence level: Permanence Not Guaranteed