Generated Narrative: NamingSystem VHA Summary Defining URL http://terminology.hl7.org/NamingSystem/VHA Version 2.1.0 Name VHA Title US Department of Veterans Affairs Status retired Definition VHA Enterprise Reference Terminology is based on CHI standard terminologies (e.g., SNOMED-CT, LOINC, HL7, NDF-RT, etc.) when available and on VHA own code sets when necessary (e.g., allergens). All concepts used within the VHA clinical environment receive a VHA Unique IDentifier or VUID. VHA Enterprise Reference Terminology complies with the semantics of the HL7 message structure Publisher VA Identifiers Type Value Preferred OID 2.16.840.1.113883.6.233 true URI http://terminology.hl7.org/CodeSystem/VHA true
VHA Enterprise Reference Terminology is based on CHI standard terminologies (e.g., SNOMED-CT, LOINC, HL7, NDF-RT, etc.) when available and on VHA own code sets when necessary (e.g., allergens). All concepts used within the VHA clinical environment receive a VHA Unique IDentifier or VUID. VHA Enterprise Reference Terminology complies with the semantics of the HL7 message structure