HealthData.Gov
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
- HTML
Updated Oct 29, 2026
Datasets
25 datasets
HealthData.Gov
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 recommended or required by NIH Institutes and…
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Updated Oct 29, 2026
HealthData.Gov
Unified Medical Language System (UMLS)
The UMLS integrates and distributes key terminology, classification and coding standards, and associated resources to promote creation of more effective and interoperable biomedical information systems and services,…
- HTML
Updated Oct 29, 2026
HealthData.Gov
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).
- HTML
Updated Oct 29, 2026
HealthData.Gov
MeSH 2024 Update - Split Report
(Includes MeSH 2023 changes) The MeSH 2024 Update - Split Report lists terms that are replaced by a set of terms, either descriptors or SCRs, instead of a single term. This report includes MeSH changes from previous…
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Updated Oct 29, 2026