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NIH Common Data Elements Repository
The NIH Common Data Elements (CDE) Repository has been designed to provide access to structured human and machine-readable definitions of data elements that have been... -
SNOMED CT
SNOMED CT is one of a suite of designated standards for use in U.S. Federal Government systems for the electronic exchange of clinical health information and is also a required... -
Clinical Table Search Service
Clinical Table Search Service (formerly "lforms-service") is a web service which software programs can use for querying clinical data tables. The API for each table is designed... -
UCUM Web API Service
A web API service for validating and converting unit expressions from the Unified Code for Units of Measure (UCUM). http://unitsofmeasure.org/trac -
MeSH on Demand
MeSH on Demand identifies MeSH Terms in your text using the NLM Medical Text Indexer (MTI) program. After processing, MeSH on Demand returns a list of MeSH Terms relevant to... -
UCUM-LHC
A JavaScript package that can be included in webpages or programs and used for validating and converting unit expressions from the Unified Code for Units of Measure (UCUM). -
RxTerms
RxTerms is a drug interface terminology derived from RxNorm for prescription writing or medication history recording (e.g. in e-prescribing systems, PHRs). RxTerms is derived... -
RxNorm
RxNorm provides normalized names for clinical drugs and links its names to many of the drug vocabularies commonly used in pharmacy management and drug interaction software,... -
Medical Subject Headings (MeSH)
Medical Subject Headings (MeSH) is a hierarchically-organized terminology for indexing and cataloging of biomedical information. It is used for the indexing of PubMed and other... -
RxNav-in-a-Box
RxNav-in-a-Box provides users with a locally-installable RxNav (https://rxnav.nlm.nih.gov/RxNavDoc.html) and RESTful companion APIs, including RxNorm, RxTerms, RxClass, RxCUI... -
MeSH 2025 Update - Combine Report
(Includes MeSH 2023 and 2024 changes) The MeSH 2025 Update - Combine Report lists new Entry Combinations. These are cases where a new, precoordinated Descriptor has been created... -
MeSH 2025 Update - Add Report
(Includes MeSH 2023 and 2024 changes) The MeSH 2025 Update - Add Report lists new Descriptors and Supplementary Concept Records (SCRs) that have been added to MeSH for the...