<status value="draft" /> <publisher value="Nictiz" /> <contact> <name value="Nictiz" /> <telecom> <system value="url" /> <value value="https://www.nictiz.nl" /> <use value="work" /> </telecom> </contact> <description value="An extension to provide the way in which a hypersensitivity/intolerance or reaction is determined." /> <purpose value="This extension represents the WayOfDetermination concept for implementations following the information standard [CiO](https://informatiestandaarden.nictiz.nl/wiki/Landingspagina_Contra-indicaties_en_Overgevoeligheden)." /> <copyright value="Copyright and related rights waived via CC0, https://creativecommons.org/publicdomain/zero/1.0/. This does not apply to information from third parties, for example a medical terminology system. The implementer alone is responsible for identifying and obtaining any necessary licenses or authorizations to utilize third party IP in connection with the specification or otherwise." /> <fhirVersion value="4.0.1" /> <kind value="complex-type" /> <abstract value="false" /> <context> <type value="element" /> <expression value="AllergyIntolerance" /> </context> <type value="Extension" /> <baseDefinition value="http://hl7.org/fhir/StructureDefinition/Extension" /> <derivation value="constraint" /> <differential> <element id="Extension"> <path value="Extension" /> <max value="1" /> </element> <element id="Extension.url"> <path value="Extension.url" /> <fixedUri value="http://nictiz.nl/fhir/StructureDefinition/ext-WayOfDetermination" /> </element> <element id="Extension.value[x]"> <path value="Extension.value[x]" /> <short value="WayOfDetermination" /> <definition value="The way in which the hypersensitivity/intolerance or reaction is determined." /> <alias value="WijzeVanVaststellen" /> <type> <code value="CodeableConcept" /> </type> <binding> <strength value="extensible" /> <valueSet value="http://decor.nictiz.nl/fhir/ValueSet/2.16.840.1.113883.2.4.3.11.60.26.11.14--20231120120019" /> </binding> </element> </differential> </StructureDefinition>