http://hl7.org/fhir/StructureDefinition/iso21090-EN-qualifier|4.0.1

A set of codes each of which specifies a certain subcategory of the name part in addition to the main name part type.

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