http://hl7.org/fhir/StructureDefinition/codesystem-concept-comments|4.0.1

A comment that explains how this code is used in this context (where the value set is expected to be used).

element_id	types
Extension
Extension.extension
Extension.url
Extension.value[x]	string
Extension
Extension.id	http://hl7.org/fhirpath/System.String
Extension.extension	Extension
Extension.url	http://hl7.org/fhirpath/System.String
Extension.value[x]	string