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1.25.1.6 Using NDF-RT (National Drug File – Reference Terminology) with FHIR

Vocabulary Work Group

Maturity Level: N/A

Ballot Status: DSTU 2

1.25.1.6.1 Summary

Source	National Drug File – Reference Terminology prepared by Veterans Health Administration , and distributed as part of UMLS by the NLM (direct link )
System	The URI to identify NDF-RT is not resolved. As a temporary arrangement, the URL "http://hl7.org/fhir/ndfrt" is to be used
Version	A version is not needed. Use the date of release of the UMLS release for the version of NDF-RT if a version is desired
Code	The NUI is used for the code value for an NDF-RT concept
Display	??
Filter Properties	None are described yet

This URL is temporary while the NDF-RT and FHIR teams discuss the long term arrangements. Further documentation can be found in evs .

1.25.1.6.2 Version Issues

NDF-RT is released as part of UMLS, and therefore each successive release has the date of the UMLS release as its version.

1.25.1.6.3 Copyright/License Issues

NDF-RT has no copyright acknowledgement needed, but users must adhere to the UMLS license.

1.25.1.6.4 NDF-RT Filter Properties

This section documents the property filters that can be used with the SNOMED CT code system in value set composition statements.

1.25.1.6.4.1 By Subsumption

Others Yet to be done.

1.25.1.6.5 Implicit Value Sets

Yet to be done.