Union of http://hl7.org/fhir/StructureDefinition/characteristicExpression and http://hl7.org/fhir/StructureDefinition/characteristicExpression

This is the set of resources that conform to either of the profiles Characteristic Expression (http://hl7.org/fhir/StructureDefinition/characteristicExpression) and Characteristic Expression (http://hl7.org/fhir/StructureDefinition/characteristicExpression). E.g. what you have to deal with if you get resources conforming to one of them

Structure

NameFlagsCard.TypeDescription & Constraints    Filter: Filtersdoco
.. Extension 0..1Criteria for group membership
... url 1..1uriidentifies the meaning of the extension
... value[x] 1..1ExpressionValue of extension

doco Documentation for this format