The Clinical Data Interchange Standards Consortium (CDISC) is an international non-profit organization that develops data standards for medical research and other healthcare areas. CDISC produces the CDISC Terminology to aid their efforts.
The goal of CDISC is to develop platform independent standards that aid interoperability of healthcare information systems.
The CDISC Terminology includes these subsets as part of the NCI Thesaurus:
Metathesaurus Update Frequency
The CDISC Terminology is updated annually as part of the NCI Thesaurus in the Metathesaurus.