http://hl7.org/fhir/StructureDefinition/servicerequest-geneticsItem|5.2.0

The specific diagnostic investigations that are requested as part of this request. Sometimes, there can only be one item per request, but in most contexts, more than one investigation can be requested.
typedestination
baseDefinitionhttp://hl7.org/fhir/StructureDefinition/Extension
typehttp://hl7.org/fhir/StructureDefinition/Extension
Extension.extension.typehttp://hl7.org/fhir/StructureDefinition/Extension
Extension.extension.url.typehttp://hl7.org/fhir/StructureDefinition/uri
Extension.extension.value[x].typehttp://hl7.org/fhir/StructureDefinition/CodeableConcept
Extension.extension.typehttp://hl7.org/fhir/StructureDefinition/Extension
Extension.extension.url.typehttp://hl7.org/fhir/StructureDefinition/uri
Extension.extension.value[x].typehttp://hl7.org/fhir/StructureDefinition/Reference
Extension.extension.value[x].targetProfilehttp://hl7.org/fhir/StructureDefinition/Observation
Extension.extension.typehttp://hl7.org/fhir/StructureDefinition/Extension
Extension.extension.url.typehttp://hl7.org/fhir/StructureDefinition/uri
Extension.extension.value[x].typehttp://hl7.org/fhir/StructureDefinition/Reference
Extension.extension.value[x].targetProfilehttp://hl7.org/fhir/StructureDefinition/Specimen
Extension.extension.typehttp://hl7.org/fhir/StructureDefinition/Extension
Extension.extension.url.typehttp://hl7.org/fhir/StructureDefinition/uri
Extension.extension.value[x].typehttp://hl7.org/fhir/StructureDefinition/code