Union of http://hl7.org/fhir/StructureDefinition/allergyintolerance-substanceExposureRisk and http://hl7.org/fhir/StructureDefinition/allergyintolerance-substanceExposureRisk

This is the set of resources that conform to either of the profiles AllergyIntolerance Substance Exposure Risk (http://hl7.org/fhir/StructureDefinition/allergyintolerance-substanceExposureRisk) and AllergyIntolerance Substance Exposure Risk (http://hl7.org/fhir/StructureDefinition/allergyintolerance-substanceExposureRisk). E.g. what you have to deal with if you get resources conforming to one of them

Structure

NameFlagsCard.TypeDescription & Constraintsdoco
.. Extension C0..1Exposure risk of adverse reaction (allergy or intolerance) to the specified substance/product
ele-1: All FHIR elements must have a @value or children
ext-1: Must have either extensions or value[x], not both
inv-1: If the substanceExposureRisk extension element is present, the AllergyIntolerance.code element must be omitted.
... extension 0..*ExtensionAdditional content defined by implementations
ele-1: All FHIR elements must have a @value or children
ext-1: Must have either extensions or value[x], not both
... url 1..1uriidentifies the meaning of the extension

doco Documentation for this format