HL7 Terminology (THO), published by HL7 International - Vocabulary Work Group. This guide is not an authorized publication; it is the continuous build for version 6.1.0 built by the FHIR (HL7® FHIR® Standard) CI Build. This version is based on the current content of https://github.com/HL7/UTG/ and changes regularly. See the Directory of published versions

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CodeSystem: Medication Reference Terminology (MED-RT)

Official URL: http://va.gov/terminology/medrt				Version: 1.0.1
Active as of 2022-02-16			Responsible: National Cancer Institute (NCI) Enterprise Vocabulary Services (EVS)	Computable Name: MEDRT
Other Identifiers: OID:2.16.840.1.113883.6.345
Copyright/Legal: MED-RT has no copyright acknowledgement required. However, users must adhere to the UMLS license.

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

This Code system is referenced in the content logical definition of the following value sets:

• This CodeSystem is not used here; it may be used elsewhere (e.g. specifications and/or implementations that use this content)