HL7 Terminology (THO)
7.0.0 - Continuous Process Integration (ci build) International flag

HL7 Terminology (THO), published by HL7 International - Vocabulary Work Group. This guide is not an authorized publication; it is the continuous build for version 7.0.0 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

National Drug File Reference Terminology (NDF-RT) Metadata Record

Metadata Record Information Version 20251031
Maintained By HL7 Terminology Services Management Group (TSMG)
Last Updated Date 31 October 2025
Responsible Organizations U.S. Department of Veterans Affairs (VA) Roles
  • Code System Owner
  • Code System Maintainer (Steward)
  • Code System Publisher
Website https://www.va.gov/
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Code System Names Formal name National Drug File Reference Terminology (NDF-RT)
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Code System Technical Identifiers Identification Record
TSMG-endorsed URI http://hl7.org/fhir/ndfrt
TSMG-endorsed OID 2.16.840.1.113883.6.209
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Description
NDF-RT is a concept-oriented terminology, a collection of concepts, each of which represents a single, unique meaning. Every concept has one fully-specified name and an arbitrary number of other names, all of which are intended to mean the same thing and are therefore synonymous terms. Synonymous terms from external vocabulary sources may have associated unique identifiers. Publication of NDF-RT has ended. The Medication Reference Terminology (MED-RT) is the evolutionary successor to the NDF-RT.
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Code System Copyright, Intellectual Property and Licensing Copyright Statement
NDF-RT is released as part of UMLS. Therefore, each successive release has the date of the UMLS release as its version.
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