\nMedtech Evolution v6.2 and below will use the Medtech IWI ValueSet. Medtech Evolution v7.0 and above will use the standard IWI ValueSet as approved in the NZ FHIR® Base IG\nhttps://standards.digital.health.nz/ns/iwi-code URL: http://hl7.org.nz/fhir/StructureDefinition/nz-iwi Binding: Iwi (preferred)