List atom ancestors
Retrieves ancestors of a UMLS atom
HealthcareUmlsTerminologySample: aui, release
1 credit / call
Unknown
Latency unavailable
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UMLS API
The U.S. National Library of Medicine’s UMLS API supports searching biomedical terms, concepts, and relationships, including cross-vocabulary queries and concept mapping. Access requires a UMLS account and applicable licensing, subject to source vocabulary restrictions.
Developer PlatformsHealth Life ScienceDrug DataScience Health PublicMedical RecordsStructured DataKnowledge Base DataData Content
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List atom parents
Retrieves parents of a UMLS atom
HealthcareUmlsTerminologySample: aui, release
1 credit / call
Unknown
Latency unavailable
Retrieve atom
Retrieves information about a specific UMLS atom by AUI
HealthcareUmlsTerminologySample: aui, release
1 credit / call
Unknown
Latency unavailable
List atoms for CUI
Retrieves all atoms for a given CUI
HealthcareUmlsTerminologySample: cui, release
1 credit / call
Unknown
Latency unavailable
Retrieve preferred atom for CUI
Retrieves the default preferred atom of a given CUI
HealthcareUmlsTerminologySample: cui, release
1 credit / call
Unknown
Latency unavailable
List atoms for source concept
Retrieves atoms belonging to a source concept
HealthcareUmlsTerminologySample: sab, release, source_concept
1 credit / call
Unknown
Latency unavailable
Retrieve preferred atom for source concept
Retrieves the default preferred atom belonging to a source concept
HealthcareUmlsTerminologySample: sab, release, source_concept
1 credit / call
Unknown
Latency unavailable
Retrieves atoms and information about atoms for a known CUI
Retrieves atoms and information about atoms for a known CUI
HealthcareTerminologyUmlsSample: CUI, version
1 credit / call
Unknown
Latency unavailable
Retrieve UMLS Concept Definitions
Retrieves definitions of the CUI
HealthcareUmlsConceptsSample: cui, release
1 credit / call
Unknown
Latency unavailable
Retrieves NLM-asserted relationships for a known CUI
Retrieves NLM-asserted relationships for a known CUI
HealthcareTerminologyUmlsSample: CUI, version
1 credit / call
Unknown
Latency unavailable
Retrieving Source-Asserted Descendants
Retrieves descendants of a source-asserted identifier. Returns paginated list of SourceAtomCluster objects.
HealthcareTerminologyUmlsSample: sabs, release, identifier
1 credit / call
Unknown
Latency unavailable
Retrieving Source-Asserted Relations
Retrieves relationships of a source-asserted identifier such as a LOINC code.
HealthcareTerminologyUmlsSample: release, identifier, rootSource
1 credit / call
Unknown
Latency unavailable
Retrieves all relationships of a source-asserted identifier
Retrieves all relationships of a source-asserted identifier
HealthcareTerminologyUmlsSample: id, source, version
1 credit / call
Unknown
Latency unavailable
Crosswalk Vocabulary Codes Using CUIs
Retrieves codes from other UMLS source vocabularies that share a UMLS Concept Unique Identifier (CUI) with the given source-asserted identifier.
HealthcareBiomedicalTerminologySample: source, version, identifier
1 credit / call
Unknown
Latency unavailable
Crosswalk Vocabularies Using CUIs
Retrieves all codes that share a UMLS CUI with the given source code from specified or all UMLS source vocabularies.
HealthcareMedicalTerminologySample: code, source, release
1 credit / call
Unknown
Latency unavailable
Retrieve UMLS Vocabulary Metadata
Retrieves information about all UMLS Vocabularies for a given UMLS release version.
HealthcareBiomedicalTerminologySample: version
1 credit / call
Unknown
Latency unavailable
Retrieve UMLS Vocabulary Sources Metadata
Retrieves metadata about available UMLS vocabulary sources in the current version.
HealthcareBiomedicalMetadata
1 credit / call
Unknown
Latency unavailable
List Releases
This API endpoint provides a list of releases for RxNorm, SNOMED CT, and UMLS. You can use this endpoint to get the latest release or to obtain past releases.
HealthcareTerminologyUmls
1 credit / call
Unknown
Latency unavailable
Retrieve Semantic Type Information
Retrieves semantic type information by identifier using the semantic-network endpoint.
HealthcareBiomedicalOntologySample: tui, version
1 credit / call
Unknown
Latency unavailable
Retrieves information for a known Semantic Type identifier (TUI)
Retrieves information for a known Semantic Type identifier (TUI)
HealthcareTerminologyUmlsSample: id, version
1 credit / call
Unknown
Latency unavailable