Unlocking UMLS | Biopragmatics

The Unified Medical Language System (UMLS) is a widely used biomedical and clinical vocabulary maintained by the United States National Library of Medicine. However, it is notoriously difficult to access and work with due to licensing restrictions and its complex download system. In the same vein as my previous posts about DrugBank and ChEMBL, this post describes open source software I’ve developed for downloading and working with this data. It also works for RxNorm, SemMedDB, SNOMED-CT, and any other data accessible through the UMLS Terminology Services (UTS) ticket granting system.

https://cthoyt.com/2023/09/01/umls.html