http://hl7.org/fhir/StructureDefinition/Identifier|5.0.0

Identifier Type: An identifier - identifies some entity uniquely and unambiguously. Typically this is used for business identifiers.
typedestination
baseDefinitionhttp://hl7.org/fhir/StructureDefinition/DataType
typehttp://hl7.org/fhir/StructureDefinition/Identifier
Identifier.use.typehttp://hl7.org/fhir/StructureDefinition/code
Identifier.use.binding.valueSethttp://hl7.org/fhir/ValueSet/identifier-use | 5.0.0
Identifier.type.typehttp://hl7.org/fhir/StructureDefinition/CodeableConcept
Identifier.type.binding.valueSethttp://hl7.org/fhir/ValueSet/identifier-type
Identifier.system.typehttp://hl7.org/fhir/StructureDefinition/uri
Identifier.value.typehttp://hl7.org/fhir/StructureDefinition/string
Identifier.period.typehttp://hl7.org/fhir/StructureDefinition/Period
Identifier.assigner.typehttp://hl7.org/fhir/StructureDefinition/Reference
Identifier.assigner.targetProfilehttp://hl7.org/fhir/StructureDefinition/Organization