Medication Reference Terminology (MED-RT) is the evolutionary successor to the Veterans Health Administration National Drug File – Reference Terminology (VHA NDF-RT). Both are formal ontology representations of medication terminology, pharmacologic classifications, and asserted authoritative relationships between them. The MED-RT code system includes relationships between MED-RT concepts and concepts in external code systems, as well as relationships between concepts only in the external code systems. The external code systems that MED-RT references include RxNorm, MeSH, and SNOMED CT US Edition. MED-RT can be downloaded from https://evs.nci.nih.gov/ftp1/MED-RT/ For more information, please see https://ncit.nci.nih.gov/ncitbrowser/pages/vocabulary.jsf?dictionary=MED-RT
Status in source: active.
Names: MEDRT
Technical details
{
"url": "http://terminology.hl7.org/NamingSystem/MEDRT",
"date": "2022-02-16T00:00:00-00:00",
"kind": "codesystem",
"title": "Medication Reference Terminology (MED-RT)",
"status": "active",
"contact": [
{
"name": "US Department of Veterans Affairs; John Kilbourne, MD",
"telecom": [
{
"value": "https://www.va.gov/",
"system": "url"
},
{
"value": "medrt@jpsys.com",
"system": "email"
},
{
"value": "John.Kilbourne@va.gov",
"system": "email"
}
]
}
],
"version": "1.0.0",
"copyright": "MED-RT has no copyright acknowledgement required. However, users must adhere to the UMLS license.",
"publisher": "National Cancer Institute (NCI) Enterprise Vocabulary Services (EVS)",
"responsible": "US Department of Veterans Affairs; John Kilbourne, MD",
"resource_type": "NamingSystem",
"oid_identifier": {
"type": "oid",
"value": "2.16.840.1.113883.6.345",
"preferred": true
},
"other_identifiers": [
{
"type": "uri",
"value": "http://va.gov/terminology/medrt",
"preferred": true
}
]
}- HL7 Terminology
· Publisher's source file
Source location: package/NamingSystem-MEDRT.json#/uniqueId/0.Source version and references
Downloaded: 2026-10-19T20:26:54.046133+00:00.