json_schema: {"schema": "http://json-schema.org/draft-04/schema#", "$id": "http://hl7.org/fhir/json-schema/Identifier", "$ref": "#/definitions/Identifier", "description": "see http://hl7.org/fhir/json.html#schema for information about the FHIR Json Schemas", "definitions": {"Identifier": {"allOf": [{"$ref": "Element#/definitions/Element"}, {"description": "A technical identifier - identifies some entity uniquely and unambiguously.", "properties": {"use": {"description": "The purpose of this identifier.", "enum": ["usual", "official", "temp", "secondary"], "type": "string"}, "_use": {"description": "Extensions for use", "$ref": "http://hl7.org/fhir/json-schema/Element#/definitions/Element"}, "type": {"description": "A coded type for the identifier that can be used to determine which identifier to use for a specific purpose.", "$ref": "http://hl7.org/fhir/json-schema/CodeableConcept#/definitions/CodeableConcept"}, "system": {"description": "Establishes the namespace for the value - that is, a URL that describes a set values that are unique.", "type": "string"}, "_system": {"description": "Extensions for system", "$ref": "http://hl7.org/fhir/json-schema/Element#/definitions/Element"}, "value": {"description": "The portion of the identifier typically relevant to the user and which is unique within the context of the system.", "type": "string"}, "_value": {"description": "Extensions for value", "$ref": "http://hl7.org/fhir/json-schema/Element#/definitions/Element"}, "period": {"description": "Time period during which identifier is/was valid for use.", "$ref": "http://hl7.org/fhir/json-schema/Period#/definitions/Period"}, "assigner": {"description": "Organization that issued/manages the identifier.", "$ref": "http://hl7.org/fhir/json-schema/Reference#/definitions/Reference"}}}]}}}