http://hl7.org/fhir/StructureDefinition/iso21090-ADXP-censusTract|5.2.0

A geographic sub-unit delineated for demographic purposes.
typedestination
baseDefinitionhttp://hl7.org/fhir/StructureDefinition/Extension
typehttp://hl7.org/fhir/StructureDefinition/Extension
Extension.value[x].typehttp://hl7.org/fhir/StructureDefinition/string