Union of http://hl7.org/fhir/us/pq-cmc-fda/StructureDefinition/pq-hierarchical-level-extension and http://hl7.org/fhir/us/pq-cmc-fda/StructureDefinition/pq-hierarchical-level-extension

This is the set of resources that conform to either of the profiles Hierarchical Level (http://hl7.org/fhir/us/pq-cmc-fda/StructureDefinition/pq-hierarchical-level-extension) and Hierarchical Level (http://hl7.org/fhir/us/pq-cmc-fda/StructureDefinition/pq-hierarchical-level-extension). E.g. what you have to deal with if you get resources conforming to one of them

Structure

NameFlagsCard.TypeDescription & Constraintsdoco
.. Extension 0..*Hierarchical Level
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
... value[x] S1..1positiveIntTestCategory Level
ele-1: All FHIR elements must have a @value or children

doco Documentation for this format