Reference record for OID 2.16.840.1.113883.6.345

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

{
  "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. SHA-256: cde07102d3d74210128b29fc5fc0bce48f5187fbc39eee29a747ec89f0f2ed45

  {'kind': 'identifier-system', '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', 'document': {'file': 'package/NamingSystem-MEDRT.json', 'package': {'date': '20260922024003', 'name': 'hl7.terminology', 'license': 'CC0-1.0', 'version': '7.4.0', 'canonical': 'http://terminology.hl7.org', 'fhirVersions': ['5.0.0']}}, '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}]}, 'parser_version': 'hl7-terminology-1'}