Jan 19, 2016

How to Get Access to the UMLS Metathesaurus?

The UMLS Metathesaurus is 
a repository containing millions of biomedical and health related concepts, their synonymous names, and their relationships. You can think of it as a meta-dictionary (dictionary over over dictionaries), pulling in classification systems and dictionaries such as ICD-10, ICD-9, SNOMED, RxNORM, Mesh and many many more. The Metathesaurus has over 150 dictionaries/classification systems.

To gain access to the UMLS Metathesaurus you have to:

1. Fill up an application form here: https://uts.nlm.nih.gov//license.html . This is reviewed by someone so, make sure you fill this form up correctly.

2. You will receive a confirmation email and after several days, and you will be given access if approved. 

3. You can then sign-in and you will have access to the entire database. Note that you will have to renew your license annually

Once you have access, to start exploration I would recommend that you start with the SNOMED CT browser (which is a subset) and then move on to the UMLS Metathesaurus browser (which is basically the meta-dictionary).

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