{
  "resourceType": "StructureDefinition",
  "id": "Identifier",
  "meta": {
    "lastUpdated": "2020-03-30T15:04:02.223+00:00"
  },
  "url": "http://StructureDefinition.hl7fhir.cn/Identifier",
  "name": "Identifier",
  "title": "标识符",
  "status": "draft",
  "date": "2020-03-30T15:03:36.6310405+00:00",
  "description": "标识符，唯一且明确地标识某个域中的实体。常作为业务标识符（业务ID)使用，在不同业务域中的唯一标识ID",
  "fhirVersion": "4.0.0",
  "mapping": [
    {
      "identity": "v2",
      "uri": "http://hl7.org/v2",
      "name": "HL7 v2 Mapping"
    },
    {
      "identity": "rim",
      "uri": "http://hl7.org/v3",
      "name": "RIM Mapping"
    },
    {
      "identity": "servd",
      "uri": "http://www.omg.org/spec/ServD/1.0/",
      "name": "ServD"
    }
  ],
  "kind": "complex-type",
  "abstract": false,
  "type": "Identifier",
  "baseDefinition": "http://hl7.org/fhir/StructureDefinition/Identifier",
  "derivation": "constraint",
  "snapshot": {
    "element": [
      {
        "id": "Identifier",
        "extension": [
          {
            "url": "http://hl7.org/fhir/StructureDefinition/structuredefinition-standards-status",
            "valueCode": "normative"
          },
          {
            "url": "http://hl7.org/fhir/StructureDefinition/structuredefinition-normative-version",
            "valueCode": "4.0.0"
          }
        ],
        "path": "Identifier",
        "short": "业务标识符",
        "definition": "标识符，唯一且明确地标识某个域中的实体。常用作业务标识符，在不同业务域中的唯一标识ID。在很多场景下可作为交叉索引使用。",
        "comment": "业务ID不是资源服务器上的逻辑ID（非标识主键）",
        "min": 0,
        "max": "*",
        "base": {
          "path": "Identifier",
          "min": 0,
          "max": "*"
        },
        "condition": [
          "ele-1"
        ],
        "constraint": [
          {
            "key": "ele-1",
            "severity": "error",
            "human": "All FHIR elements must have a @value or children",
            "expression": "hasValue() or (children().count() > id.count())",
            "xpath": "@value|f:*|h:div",
            "source": "http://hl7.org/fhir/StructureDefinition/Element"
          }
        ],
        "mapping": [
          {
            "identity": "rim",
            "map": "n/a"
          },
          {
            "identity": "v2",
            "map": "CX / EI (occasionally, more often EI maps to a resource id or a URL)"
          },
          {
            "identity": "rim",
            "map": "II - The Identifier class is a little looser than the v3 type II because it allows URIs as well as registered OIDs or GUIDs.  Also maps to Role[classCode=IDENT]"
          },
          {
            "identity": "servd",
            "map": "Identifier"
          }
        ]
      },
      {
        "id": "Identifier.id",
        "path": "Identifier.id",
        "representation": [
          "xmlAttr"
        ],
        "short": "Unique id for inter-element referencing",
        "definition": "Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.",
        "min": 0,
        "max": "1",
        "base": {
          "path": "Element.id",
          "min": 0,
          "max": "1"
        },
        "type": [
          {
            "extension": [
              {
                "url": "http://hl7.org/fhir/StructureDefinition/structuredefinition-fhir-type",
                "valueUrl": "string"
              }
            ],
            "code": "http://hl7.org/fhirpath/System.String"
          }
        ],
        "mapping": [
          {
            "identity": "rim",
            "map": "n/a"
          }
        ]
      },
      {
        "id": "Identifier.extension",
        "path": "Identifier.extension",
        "slicing": {
          "discriminator": [
            {
              "type": "value",
              "path": "url"
            }
          ],
          "description": "Extensions are always sliced by (at least) url",
          "rules": "open"
        },
        "short": "Additional content defined by implementations",
        "definition": "May be used to represent additional information that is not part of the basic definition of the element. To make the use of extensions safe and manageable, there is a strict set of governance  applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension.",
        "comment": "There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions.  The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.",
        "alias": [
          "extensions",
          "user content"
        ],
        "min": 0,
        "max": "*",
        "base": {
          "path": "Element.extension",
          "min": 0,
          "max": "*"
        },
        "type": [
          {
            "code": "Extension"
          }
        ],
        "condition": [
          "ele-1"
        ],
        "constraint": [
          {
            "key": "ele-1",
            "severity": "error",
            "human": "All FHIR elements must have a @value or children",
            "expression": "hasValue() or (children().count() > id.count())",
            "xpath": "@value|f:*|h:div",
            "source": "http://hl7.org/fhir/StructureDefinition/Element"
          },
          {
            "key": "ext-1",
            "severity": "error",
            "human": "Must have either extensions or value[x], not both",
            "expression": "extension.exists() != value.exists()",
            "xpath": "exists(f:extension)!=exists(f:*[starts-with(local-name(.), 'value')])",
            "source": "http://hl7.org/fhir/StructureDefinition/Extension"
          }
        ],
        "mapping": [
          {
            "identity": "rim",
            "map": "n/a"
          },
          {
            "identity": "rim",
            "map": "N/A"
          }
        ]
      },
      {
        "id": "Identifier.use",
        "extension": [
          {
            "url": "http://hl7.org/fhir/StructureDefinition/structuredefinition-standards-status",
            "valueCode": "normative"
          },
          {
            "url": "http://hl7.org/fhir/StructureDefinition/structuredefinition-normative-version",
            "valueCode": "4.0.0"
          }
        ],
        "path": "Identifier.use",
        "label": "用途",
        "short": "用途",
        "definition": "使用此标识符的目的，如：通用、正式、临时、备用、曾用等（usual | official | temp | secondary | old ）",
        "comment": "除非明确提指定为临时的，应用程序会默认一个标识符是永久的。",
        "requirements": "通过使用此元素，可以允许根据不同的使用场景选择的适当的标识符。",
        "min": 0,
        "max": "1",
        "base": {
          "path": "Identifier.use",
          "min": 0,
          "max": "1"
        },
        "type": [
          {
            "code": "code"
          }
        ],
        "condition": [
          "ele-1"
        ],
        "constraint": [
          {
            "key": "ele-1",
            "severity": "error",
            "human": "All FHIR elements must have a @value or children",
            "expression": "hasValue() or (children().count() > id.count())",
            "xpath": "@value|f:*|h:div",
            "source": "http://hl7.org/fhir/StructureDefinition/Element"
          }
        ],
        "isModifier": true,
        "isModifierReason": "如果此元素的值为\"临时的\"，意味着应用程序不应将临时id误认为永久id。",
        "isSummary": true,
        "binding": {
          "extension": [
            {
              "url": "http://hl7.org/fhir/StructureDefinition/elementdefinition-bindingName",
              "valueString": "IdentifierUse"
            }
          ],
          "strength": "required",
          "description": "Identifies the purpose for this identifier, if known .",
          "valueSet": "http://hl7.org/fhir/ValueSet/identifier-use|4.0.1"
        },
        "mapping": [
          {
            "identity": "rim",
            "map": "n/a"
          },
          {
            "identity": "v2",
            "map": "N/A"
          },
          {
            "identity": "rim",
            "map": "Role.code or implied by context"
          }
        ]
      },
      {
        "id": "Identifier.type",
        "extension": [
          {
            "url": "http://hl7.org/fhir/StructureDefinition/structuredefinition-standards-status",
            "valueCode": "normative"
          },
          {
            "url": "http://hl7.org/fhir/StructureDefinition/structuredefinition-normative-version",
            "valueCode": "4.0.0"
          }
        ],
        "path": "Identifier.type",
        "label": "标识类别",
        "short": "标识符类别",
        "definition": "用于区别标识符类别的编码，可用来指定特定目的的标识符。",
        "comment": "此元素一般用于当标识符不能为system提供值时，使用编码来区分标识的含义。 但请注意，此元素在实践中可变性很大、不易控制。所以它仅用作标识符的通用类别，并且不能当作与Identifier.system绑定的1对1的编码来使用。 \r\n另一种常见的用法是对已知标识符(指定了Identifier.system的值)的进一步分类：一些标识符可能分为多个类别。",
        "requirements": "允许用户在不知道标识符的命名系统时（Identifier.system的值）使用标识符。",
        "min": 0,
        "max": "1",
        "base": {
          "path": "Identifier.type",
          "min": 0,
          "max": "1"
        },
        "type": [
          {
            "code": "CodeableConcept",
            "profile": [
              "http://StructureDefinition.hl7fhir.cn/CodeableConcept"
            ]
          }
        ],
        "condition": [
          "ele-1"
        ],
        "constraint": [
          {
            "key": "ele-1",
            "severity": "error",
            "human": "All FHIR elements must have a @value or children",
            "expression": "hasValue() or (children().count() > id.count())",
            "xpath": "@value|f:*|h:div",
            "source": "http://hl7.org/fhir/StructureDefinition/Element"
          }
        ],
        "isSummary": true,
        "binding": {
          "extension": [
            {
              "url": "http://hl7.org/fhir/StructureDefinition/elementdefinition-bindingName",
              "valueString": "IdentifierType"
            },
            {
              "url": "http://hl7.org/fhir/StructureDefinition/elementdefinition-isCommonBinding",
              "valueBoolean": true
            }
          ],
          "strength": "extensible",
          "description": "待完善，目前暂用身份证件类别，CV02.01.101，整理自《WS 364-2011_卫生信息数据元值域代码》",
          "valueSet": "http://ValueSet.hl7fhir.cn/identity-document-type-vs"
        },
        "mapping": [
          {
            "identity": "rim",
            "map": "n/a"
          },
          {
            "identity": "v2",
            "map": "CE/CNE/CWE"
          },
          {
            "identity": "rim",
            "map": "CD"
          },
          {
            "identity": "orim",
            "map": "fhir:CodeableConcept rdfs:subClassOf dt:CD"
          },
          {
            "identity": "v2",
            "map": "CX.5"
          },
          {
            "identity": "rim",
            "map": "Role.code or implied by context"
          }
        ]
      },
      {
        "id": "Identifier.system",
        "extension": [
          {
            "url": "http://hl7.org/fhir/StructureDefinition/structuredefinition-standards-status",
            "valueCode": "normative"
          },
          {
            "url": "http://hl7.org/fhir/StructureDefinition/structuredefinition-normative-version",
            "valueCode": "4.0.0"
          }
        ],
        "path": "Identifier.system",
        "label": "命名系统",
        "short": "标识符的命名系统",
        "definition": "指定Identifier.value所属的命名空间域，此域是由一个URI表示的许多值的集合，在此集合中的每一个值（value）都是唯一的，绝不会重复。",
        "comment": "Identifier.system 的值是区分大小写的",
        "requirements": "由于有许多属于不同域的标识符集合，我们需要知道某个值（Identifier.value）意义具体是在哪个标识符集合中定义的，就必须由Identifier.system 来确定标识符集合的URI。",
        "min": 0,
        "max": "1",
        "base": {
          "path": "Identifier.system",
          "min": 0,
          "max": "1"
        },
        "type": [
          {
            "code": "uri"
          }
        ],
        "example": [
          {
            "label": "General",
            "valueUri": "http://www.acme.com/identifiers/patient"
          }
        ],
        "condition": [
          "ele-1"
        ],
        "constraint": [
          {
            "key": "ele-1",
            "severity": "error",
            "human": "All FHIR elements must have a @value or children",
            "expression": "hasValue() or (children().count() > id.count())",
            "xpath": "@value|f:*|h:div",
            "source": "http://hl7.org/fhir/StructureDefinition/Element"
          }
        ],
        "isSummary": true,
        "mapping": [
          {
            "identity": "rim",
            "map": "n/a"
          },
          {
            "identity": "v2",
            "map": "CX.4 / EI-2-4"
          },
          {
            "identity": "rim",
            "map": "II.root or Role.id.root"
          },
          {
            "identity": "servd",
            "map": "./IdentifierType"
          }
        ]
      },
      {
        "id": "Identifier.value",
        "extension": [
          {
            "url": "http://hl7.org/fhir/StructureDefinition/structuredefinition-standards-status",
            "valueCode": "normative"
          },
          {
            "url": "http://hl7.org/fhir/StructureDefinition/structuredefinition-normative-version",
            "valueCode": "4.0.0"
          }
        ],
        "path": "Identifier.value",
        "label": "标识值",
        "short": "独一无二的值",
        "definition": "标识符中通常的具体值，在Identifier.system指定域中是唯一的。",
        "comment": "如果Identifier.value的值是完整的全球唯一URI（如：urn:oid: 和urn:uuid:），那么Identifier.system的值必须是”urn:ietf:rfc:3986“。Identifier.value的主要用途是对不同命名系统中的标识符进行映射。因此，为了方便对比，可能会对其值进行标准化处理（例如，删除不重要的空白、破折号等）。\r\n如果想显示可读强的文字说明，可以使用Identifier.extention.renderedValue扩展元素。\r\nIdentifier.value是严格区分大小写，除非指定的Identifier.system明确说明在其命名空间域内的值不区分大小写。",
        "min": 0,
        "max": "1",
        "base": {
          "path": "Identifier.value",
          "min": 0,
          "max": "1"
        },
        "type": [
          {
            "code": "string"
          }
        ],
        "example": [
          {
            "label": "General",
            "valueString": "123456"
          }
        ],
        "condition": [
          "ele-1"
        ],
        "constraint": [
          {
            "key": "ele-1",
            "severity": "error",
            "human": "All FHIR elements must have a @value or children",
            "expression": "hasValue() or (children().count() > id.count())",
            "xpath": "@value|f:*|h:div",
            "source": "http://hl7.org/fhir/StructureDefinition/Element"
          }
        ],
        "isSummary": true,
        "mapping": [
          {
            "identity": "rim",
            "map": "n/a"
          },
          {
            "identity": "v2",
            "map": "CX.1 / EI.1"
          },
          {
            "identity": "rim",
            "map": "II.extension or II.root if system indicates OID or GUID (Or Role.id.extension or root)"
          },
          {
            "identity": "servd",
            "map": "./Value"
          }
        ]
      },
      {
        "id": "Identifier.value.id",
        "path": "Identifier.value.id",
        "representation": [
          "xmlAttr"
        ],
        "short": "Unique id for inter-element referencing",
        "definition": "Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.",
        "min": 0,
        "max": "1",
        "base": {
          "path": "Element.id",
          "min": 0,
          "max": "1"
        },
        "type": [
          {
            "extension": [
              {
                "url": "http://hl7.org/fhir/StructureDefinition/structuredefinition-fhir-type",
                "valueUrl": "string"
              }
            ],
            "code": "http://hl7.org/fhirpath/System.String"
          }
        ],
        "mapping": [
          {
            "identity": "rim",
            "map": "n/a"
          }
        ]
      },
      {
        "id": "Identifier.value.extension",
        "path": "Identifier.value.extension",
        "slicing": {
          "discriminator": [
            {
              "type": "value",
              "path": "url"
            }
          ],
          "description": "Extensions are always sliced by (at least) url",
          "rules": "open"
        },
        "short": "Additional content defined by implementations",
        "definition": "May be used to represent additional information that is not part of the basic definition of the element. To make the use of extensions safe and manageable, there is a strict set of governance  applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension.",
        "comment": "There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions.  The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.",
        "alias": [
          "extensions",
          "user content"
        ],
        "min": 0,
        "max": "*",
        "base": {
          "path": "Element.extension",
          "min": 0,
          "max": "*"
        },
        "type": [
          {
            "code": "Extension"
          }
        ],
        "condition": [
          "ele-1"
        ],
        "constraint": [
          {
            "key": "ele-1",
            "severity": "error",
            "human": "All FHIR elements must have a @value or children",
            "expression": "hasValue() or (children().count() > id.count())",
            "xpath": "@value|f:*|h:div",
            "source": "http://hl7.org/fhir/StructureDefinition/Element"
          },
          {
            "key": "ext-1",
            "severity": "error",
            "human": "Must have either extensions or value[x], not both",
            "expression": "extension.exists() != value.exists()",
            "xpath": "exists(f:extension)!=exists(f:*[starts-with(local-name(.), 'value')])",
            "source": "http://hl7.org/fhir/StructureDefinition/Extension"
          }
        ],
        "mapping": [
          {
            "identity": "rim",
            "map": "n/a"
          },
          {
            "identity": "rim",
            "map": "N/A"
          }
        ]
      },
      {
        "id": "Identifier.value.extension:display",
        "extension": [
          {
            "url": "http://hl7.org/fhir/StructureDefinition/structuredefinition-standards-status",
            "valueCode": "normative"
          },
          {
            "url": "http://hl7.org/fhir/StructureDefinition/structuredefinition-normative-version",
            "valueCode": "4.0.0"
          }
        ],
        "path": "Identifier.value.extension",
        "sliceName": "display",
        "short": "易读的显示的内容（如果默认设置不合适）",
        "definition": "Identifier.value数据类型的值提供另一种显示方式，以便满足易读性、保密性等要求。例如，敏感标识符（如银行卡号）部分被星号遮盖。",
        "comment": "在某些情况下，可能看到了此扩展但却看不到值。例如，由于权限不足而造成的内容屏蔽。在不同的领域呈现出的内容可能不同（例如，在呈现数字时可能使用\",\"分隔符，也可能使用\",\"。）。",
        "alias": [
          "extensions",
          "user content"
        ],
        "min": 0,
        "max": "1",
        "base": {
          "path": "Element.extension",
          "min": 0,
          "max": "*"
        },
        "type": [
          {
            "code": "Extension",
            "profile": [
              "http://hl7.org/fhir/StructureDefinition/rendered-value"
            ]
          }
        ],
        "condition": [
          "ele-1"
        ],
        "constraint": [
          {
            "key": "ele-1",
            "severity": "error",
            "human": "All FHIR elements must have a @value or children",
            "expression": "hasValue() or (children().count() > id.count())",
            "xpath": "@value|f:*|h:div",
            "source": "http://hl7.org/fhir/StructureDefinition/Element"
          },
          {
            "key": "ext-1",
            "severity": "error",
            "human": "Must have either extensions or value[x], not both",
            "expression": "extension.exists() != value.exists()",
            "xpath": "exists(f:extension)!=exists(f:*[starts-with(local-name(.), 'value')])",
            "source": "http://hl7.org/fhir/StructureDefinition/Extension"
          }
        ],
        "mapping": [
          {
            "identity": "rim",
            "map": "n/a"
          },
          {
            "identity": "rim",
            "map": "N/A"
          }
        ]
      },
      {
        "id": "Identifier.value.value",
        "path": "Identifier.value.value",
        "representation": [
          "xmlAttr"
        ],
        "short": "Primitive value for string",
        "definition": "Primitive value for string",
        "min": 0,
        "max": "1",
        "base": {
          "path": "string.value",
          "min": 0,
          "max": "1"
        },
        "type": [
          {
            "extension": [
              {
                "url": "http://hl7.org/fhir/StructureDefinition/structuredefinition-fhir-type",
                "valueUrl": "string"
              },
              {
                "url": "http://hl7.org/fhir/StructureDefinition/regex",
                "valueString": "[ \\r\\n\\t\\S]+"
              }
            ],
            "code": "http://hl7.org/fhirpath/System.String"
          }
        ],
        "maxLength": 1048576
      },
      {
        "id": "Identifier.period",
        "extension": [
          {
            "url": "http://hl7.org/fhir/StructureDefinition/structuredefinition-standards-status",
            "valueCode": "normative"
          },
          {
            "url": "http://hl7.org/fhir/StructureDefinition/structuredefinition-normative-version",
            "valueCode": "4.0.0"
          }
        ],
        "path": "Identifier.period",
        "label": "有效时段",
        "short": "时段范围",
        "definition": "由开始和结束时间以及可选时间定义的时间段范围。",
        "comment": "注意是时间段Period数据类型，而非持续时间Duration数据类型。结束时间应总是晚于开始时间。",
        "min": 0,
        "max": "1",
        "base": {
          "path": "Identifier.period",
          "min": 0,
          "max": "1"
        },
        "type": [
          {
            "code": "Period",
            "profile": [
              "http://StructureDefinition.hl7fhir.cn/Period"
            ]
          }
        ],
        "condition": [
          "ele-1"
        ],
        "constraint": [
          {
            "key": "ele-1",
            "severity": "error",
            "human": "All FHIR elements must have a @value or children",
            "expression": "hasValue() or (children().count() > id.count())",
            "xpath": "@value|f:*|h:div",
            "source": "http://hl7.org/fhir/StructureDefinition/Element"
          },
          {
            "key": "per-1",
            "severity": "error",
            "human": "If present, start SHALL have a lower value than end",
            "expression": "start.hasValue().not() or end.hasValue().not() or (start <= end)",
            "xpath": "not(exists(f:start/@value)) or not(exists(f:end/@value)) or (xs:dateTime(f:start/@value) <= xs:dateTime(f:end/@value))",
            "source": "http://hl7.org/fhir/StructureDefinition/Period"
          }
        ],
        "isSummary": true,
        "mapping": [
          {
            "identity": "rim",
            "map": "n/a"
          },
          {
            "identity": "v2",
            "map": "DR"
          },
          {
            "identity": "rim",
            "map": "IVL<TS>[lowClosed=\"true\" and highClosed=\"true\"] or URG<TS>[lowClosed=\"true\" and highClosed=\"true\"]"
          },
          {
            "identity": "v2",
            "map": "CX.7 + CX.8"
          },
          {
            "identity": "rim",
            "map": "Role.effectiveTime or implied by context"
          },
          {
            "identity": "servd",
            "map": "./StartDate and ./EndDate"
          }
        ]
      },
      {
        "id": "Identifier.assigner",
        "extension": [
          {
            "url": "http://hl7.org/fhir/StructureDefinition/structuredefinition-standards-status",
            "valueCode": "normative"
          },
          {
            "url": "http://hl7.org/fhir/StructureDefinition/structuredefinition-normative-version",
            "valueCode": "4.0.0"
          }
        ],
        "path": "Identifier.assigner",
        "label": "发布机构",
        "short": "发布机构",
        "definition": "管理或发布此标识符的机构",
        "comment": "The Identifier.assigner may omit the .reference element and only contain a .display element reflecting the name or other textual information about the assigning organization.",
        "min": 0,
        "max": "1",
        "base": {
          "path": "Identifier.assigner",
          "min": 0,
          "max": "1"
        },
        "type": [
          {
            "code": "Reference",
            "targetProfile": [
              "http://StructureDefinition.hl7fhir.cn/Organization"
            ]
          }
        ],
        "condition": [
          "ele-1"
        ],
        "constraint": [
          {
            "key": "ele-1",
            "severity": "error",
            "human": "All FHIR elements must have a @value or children",
            "expression": "hasValue() or (children().count() > id.count())",
            "xpath": "@value|f:*|h:div",
            "source": "http://hl7.org/fhir/StructureDefinition/Element"
          },
          {
            "key": "ref-1",
            "severity": "error",
            "human": "SHALL have a contained resource if a local reference is provided",
            "expression": "reference.startsWith('#').not() or (reference.substring(1).trace('url') in %rootResource.contained.id.trace('ids'))",
            "xpath": "not(starts-with(f:reference/@value, '#')) or exists(ancestor::*[self::f:entry or self::f:parameter]/f:resource/f:*/f:contained/f:*[f:id/@value=substring-after(current()/f:reference/@value, '#')]|/*/f:contained/f:*[f:id/@value=substring-after(current()/f:reference/@value, '#')])",
            "source": "http://hl7.org/fhir/StructureDefinition/Reference"
          }
        ],
        "isSummary": true,
        "mapping": [
          {
            "identity": "rim",
            "map": "n/a"
          },
          {
            "identity": "rim",
            "map": "The target of a resource reference is a RIM entry point (Act, Role, or Entity)"
          },
          {
            "identity": "v2",
            "map": "CX.4 / (CX.4,CX.9,CX.10)"
          },
          {
            "identity": "rim",
            "map": "II.assigningAuthorityName but note that this is an improper use by the definition of the field.  Also Role.scoper"
          },
          {
            "identity": "servd",
            "map": "./IdentifierIssuingAuthority"
          }
        ]
      }
    ]
  },
  "differential": {
    "element": [
      {
        "id": "Identifier",
        "extension": [
          {
            "url": "http://hl7.org/fhir/StructureDefinition/structuredefinition-standards-status",
            "valueCode": "normative"
          },
          {
            "url": "http://hl7.org/fhir/StructureDefinition/structuredefinition-normative-version",
            "valueCode": "4.0.0"
          }
        ],
        "path": "Identifier",
        "short": "业务标识符",
        "definition": "标识符，唯一且明确地标识某个域中的实体。常用作业务标识符，在不同业务域中的唯一标识ID。在很多场景下可作为交叉索引使用。",
        "comment": "业务ID不是资源服务器上的逻辑ID（非标识主键）"
      },
      {
        "id": "Identifier.use",
        "extension": [
          {
            "url": "http://hl7.org/fhir/StructureDefinition/structuredefinition-standards-status",
            "valueCode": "normative"
          },
          {
            "url": "http://hl7.org/fhir/StructureDefinition/structuredefinition-normative-version",
            "valueCode": "4.0.0"
          }
        ],
        "path": "Identifier.use",
        "label": "用途",
        "short": "用途",
        "definition": "使用此标识符的目的，如：通用、正式、临时、备用、曾用等（usual | official | temp | secondary | old ）",
        "comment": "除非明确提指定为临时的，应用程序会默认一个标识符是永久的。",
        "requirements": "通过使用此元素，可以允许根据不同的使用场景选择的适当的标识符。",
        "isModifierReason": "如果此元素的值为\"临时的\"，意味着应用程序不应将临时id误认为永久id。"
      },
      {
        "id": "Identifier.type",
        "extension": [
          {
            "url": "http://hl7.org/fhir/StructureDefinition/structuredefinition-standards-status",
            "valueCode": "normative"
          },
          {
            "url": "http://hl7.org/fhir/StructureDefinition/structuredefinition-normative-version",
            "valueCode": "4.0.0"
          }
        ],
        "path": "Identifier.type",
        "label": "标识类别",
        "short": "标识符类别",
        "definition": "用于区别标识符类别的编码，可用来指定特定目的的标识符。",
        "comment": "此元素一般用于当标识符不能为system提供值时，使用编码来区分标识的含义。 但请注意，此元素在实践中可变性很大、不易控制。所以它仅用作标识符的通用类别，并且不能当作与Identifier.system绑定的1对1的编码来使用。 \r\n另一种常见的用法是对已知标识符(指定了Identifier.system的值)的进一步分类：一些标识符可能分为多个类别。",
        "requirements": "允许用户在不知道标识符的命名系统时（Identifier.system的值）使用标识符。",
        "type": [
          {
            "code": "CodeableConcept",
            "profile": [
              "http://StructureDefinition.hl7fhir.cn/CodeableConcept"
            ]
          }
        ],
        "binding": {
          "extension": [
            {
              "url": "http://hl7.org/fhir/StructureDefinition/elementdefinition-bindingName",
              "valueString": "IdentifierType"
            },
            {
              "url": "http://hl7.org/fhir/StructureDefinition/elementdefinition-isCommonBinding",
              "valueBoolean": true
            }
          ],
          "strength": "extensible",
          "description": "待完善，目前暂用身份证件类别，CV02.01.101，整理自《WS 364-2011_卫生信息数据元值域代码》",
          "valueSet": "http://ValueSet.hl7fhir.cn/identity-document-type-vs"
        }
      },
      {
        "id": "Identifier.system",
        "extension": [
          {
            "url": "http://hl7.org/fhir/StructureDefinition/structuredefinition-standards-status",
            "valueCode": "normative"
          },
          {
            "url": "http://hl7.org/fhir/StructureDefinition/structuredefinition-normative-version",
            "valueCode": "4.0.0"
          }
        ],
        "path": "Identifier.system",
        "label": "命名系统",
        "short": "标识符的命名系统",
        "definition": "指定Identifier.value所属的命名空间域，此域是由一个URI表示的许多值的集合，在此集合中的每一个值（value）都是唯一的，绝不会重复。",
        "comment": "Identifier.system 的值是区分大小写的",
        "requirements": "由于有许多属于不同域的标识符集合，我们需要知道某个值（Identifier.value）意义具体是在哪个标识符集合中定义的，就必须由Identifier.system 来确定标识符集合的URI。"
      },
      {
        "id": "Identifier.value",
        "extension": [
          {
            "url": "http://hl7.org/fhir/StructureDefinition/structuredefinition-standards-status",
            "valueCode": "normative"
          },
          {
            "url": "http://hl7.org/fhir/StructureDefinition/structuredefinition-normative-version",
            "valueCode": "4.0.0"
          }
        ],
        "path": "Identifier.value",
        "label": "标识值",
        "short": "独一无二的值",
        "definition": "标识符中通常的具体值，在Identifier.system指定域中是唯一的。",
        "comment": "如果Identifier.value的值是完整的全球唯一URI（如：urn:oid: 和urn:uuid:），那么Identifier.system的值必须是”urn:ietf:rfc:3986“。Identifier.value的主要用途是对不同命名系统中的标识符进行映射。因此，为了方便对比，可能会对其值进行标准化处理（例如，删除不重要的空白、破折号等）。\r\n如果想显示可读强的文字说明，可以使用Identifier.extention.renderedValue扩展元素。\r\nIdentifier.value是严格区分大小写，除非指定的Identifier.system明确说明在其命名空间域内的值不区分大小写。"
      },
      {
        "id": "Identifier.value.extension",
        "path": "Identifier.value.extension",
        "slicing": {
          "discriminator": [
            {
              "type": "value",
              "path": "url"
            }
          ],
          "rules": "open"
        }
      },
      {
        "id": "Identifier.value.extension:display",
        "extension": [
          {
            "url": "http://hl7.org/fhir/StructureDefinition/structuredefinition-standards-status",
            "valueCode": "normative"
          },
          {
            "url": "http://hl7.org/fhir/StructureDefinition/structuredefinition-normative-version",
            "valueCode": "4.0.0"
          }
        ],
        "path": "Identifier.value.extension",
        "sliceName": "display",
        "definition": "Identifier.value数据类型的值提供另一种显示方式，以便满足易读性、保密性等要求。例如，敏感标识符（如银行卡号）部分被星号遮盖。",
        "type": [
          {
            "code": "Extension",
            "profile": [
              "http://hl7.org/fhir/StructureDefinition/rendered-value"
            ]
          }
        ]
      },
      {
        "id": "Identifier.period",
        "extension": [
          {
            "url": "http://hl7.org/fhir/StructureDefinition/structuredefinition-standards-status",
            "valueCode": "normative"
          },
          {
            "url": "http://hl7.org/fhir/StructureDefinition/structuredefinition-normative-version",
            "valueCode": "4.0.0"
          }
        ],
        "path": "Identifier.period",
        "label": "有效时段",
        "type": [
          {
            "code": "Period",
            "profile": [
              "http://StructureDefinition.hl7fhir.cn/Period"
            ]
          }
        ]
      },
      {
        "id": "Identifier.assigner",
        "extension": [
          {
            "url": "http://hl7.org/fhir/StructureDefinition/structuredefinition-standards-status",
            "valueCode": "normative"
          },
          {
            "url": "http://hl7.org/fhir/StructureDefinition/structuredefinition-normative-version",
            "valueCode": "4.0.0"
          }
        ],
        "path": "Identifier.assigner",
        "label": "发布机构",
        "short": "发布机构",
        "definition": "管理或发布此标识符的机构",
        "type": [
          {
            "code": "Reference",
            "targetProfile": [
              "http://StructureDefinition.hl7fhir.cn/Organization"
            ]
          }
        ]
      }
    ]
  }
}