Definition for Code System IdentifierUse SystemIdentifierUse

{
  "resourceType": "CodeSystem",
  "id": "identifier-use",
  "meta": {
    "lastUpdated": "2019-10-24T11:53:00+11:00"

  "resourceType" : "CodeSystem",
  "id" : "identifier-use",
  "meta" : {
    "lastUpdated" : "2025-12-17T09:50:17.012+00:00"

  },
  "text": {
    "status": "generated",
    "div": "<div>!-- Snipped for Brevity --></div>"

  "text" : {
    "status" : "generated",
    "div" : "<div xmlns=\"http://www.w3.org/1999/xhtml\"><p class=\"res-header-id\"><b>Generated Narrative: CodeSystem identifier-use</b></p><a name=\"identifier-use\"> </a><a name=\"hcidentifier-use\"> </a><p>This case-sensitive code system <code>http://hl7.org/fhir/identifier-use</code> defines the following codes:</p><table class=\"codes\"><tr><td style=\"white-space:nowrap\"><b>Code</b></td><td><b>Display</b></td><td><b>Definition</b></td></tr><tr><td style=\"white-space:nowrap\">usual<a name=\"identifier-use-usual\"> </a></td><td>Usual</td><td>The identifier recommended for display and use in real-world interactions which should be used when such identifier is different from the &quot;official&quot; identifier.</td></tr><tr><td style=\"white-space:nowrap\">official<a name=\"identifier-use-official\"> </a></td><td>Official</td><td>The identifier considered to be most trusted for the identification of this item. Sometimes also known as &quot;primary&quot; and &quot;main&quot;. The determination of &quot;official&quot; is subjective and implementation guides often provide additional guidelines for use.</td></tr><tr><td style=\"white-space:nowrap\">temp<a name=\"identifier-use-temp\"> </a></td><td>Temp</td><td>A temporary identifier.</td></tr><tr><td style=\"white-space:nowrap\">secondary<a name=\"identifier-use-secondary\"> </a></td><td>Secondary</td><td>An identifier that was assigned in secondary use - it serves to identify the object in a relative context, but cannot be consistently assigned to the same object again in a different context.</td></tr><tr><td style=\"white-space:nowrap\">old<a name=\"identifier-use-old\"> </a></td><td>Old</td><td>The identifier id no longer considered valid, but may be relevant for search purposes.  E.g. Changes to identifier schemes, account merges, etc.</td></tr></table></div>"

  },
  "extension": [
    {
      "url": "http://hl7.org/fhir/StructureDefinition/structuredefinition-ballot-status",
      "valueString": "Informative"
    },
    {
      "url": "http://hl7.org/fhir/StructureDefinition/structuredefinition-fmm",
      "valueInteger": 0
    },
    {
      "url": "http://hl7.org/fhir/StructureDefinition/structuredefinition-wg",
      "valueCode": "fhir"
    }
  ],
  "url": "http://hl7.org/fhir/identifier-use",
  "identifier": {
    "system": "urn:ietf:rfc:3986",
    "value": "urn:oid:2.16.840.1.113883.4.642.1.53"

  "extension" : [{
    "url" : "http://hl7.org/fhir/StructureDefinition/structuredefinition-wg",
    "valueCode" : "fhir"

  },
  "version": "3.0.2",
  "name": "IdentifierUse",
  "status": "draft",
  "experimental": false,
  "date": "2019-10-24T11:53:00+11:00",
  "publisher": "HL7 (FHIR Project)",
  "contact": [
    {
      "telecom": [
        {
          "system": "url",
          "value": "http://hl7.org/fhir"
        },
        {
          "system": "email",
          "value": "fhir@lists.hl7.org"
        }
      ]
    }
  ],
  "description": "Identifies the purpose for this identifier, if known .",
  "caseSensitive": true,
  "valueSet": "http://hl7.org/fhir/ValueSet/identifier-use",
  "content": "complete",
  "concept": [
    {
      "code": "usual",
      "display": "Usual",
      "definition": "The identifier recommended for display and use in real-world interactions."
    },
    {
      "code": "official",
      "display": "Official",
      "definition": "The identifier considered to be most trusted for the identification of this item."
    },
    {
      "code": "temp",
      "display": "Temp",
      "definition": "A temporary identifier."

  {
    "url" : "http://hl7.org/fhir/StructureDefinition/structuredefinition-standards-status",
    "valueCode" : "normative"
  }],
  "url" : "http://hl7.org/fhir/identifier-use",
  "identifier" : [{
    "system" : "urn:ietf:rfc:3986",
    "value" : "urn:oid:2.16.840.1.113883.4.642.1.58"
  }],
  "version" : "6.0.0-ballot3",
  "name" : "IdentifierUse",
  "title" : "IdentifierUse",
  "status" : "active",
  "experimental" : false,
  "date" : "2025-12-17T09:50:17+00:00",
  "publisher" : "HL7 International / FHIR Infrastructure",
  "contact" : [{
    "telecom" : [{
      "system" : "url",
      "value" : "http://hl7.org/fhir"

    },
    {
      "code": "secondary",
      "display": "Secondary",
      "definition": "An identifier that was assigned in secondary use - it serves to identify the object in a relative context, but cannot be consistently assigned to the same object again in a different context."
    }
  ]

      "system" : "email",
      "value" : "fhir@lists.hl7.org"
    }]
  },
  {
    "telecom" : [{
      "system" : "url",
      "value" : "http://www.hl7.org/Special/committees/fiwg"
    }]
  }],
  "description" : "Identifies the purpose for this identifier, if known .",
  "jurisdiction" : [{
    "coding" : [{
      "system" : "http://unstats.un.org/unsd/methods/m49/m49.htm",
      "code" : "001",
      "display" : "World"
    }]
  }],
  "caseSensitive" : true,
  "valueSet" : "http://hl7.org/fhir/ValueSet/identifier-use",
  "content" : "complete",
  "concept" : [{
    "code" : "usual",
    "display" : "Usual",
    "definition" : "The identifier recommended for display and use in real-world interactions which should be used when such identifier is different from the \"official\" identifier."
  },
  {
    "code" : "official",
    "display" : "Official",
    "definition" : "The identifier considered to be most trusted for the identification of this item. Sometimes also known as \"primary\" and \"main\". The determination of \"official\" is subjective and implementation guides often provide additional guidelines for use."
  },
  {
    "code" : "temp",
    "display" : "Temp",
    "definition" : "A temporary identifier."
  },
  {
    "code" : "secondary",
    "display" : "Secondary",
    "definition" : "An identifier that was assigned in secondary use - it serves to identify the object in a relative context, but cannot be consistently assigned to the same object again in a different context."
  },
  {
    "code" : "old",
    "display" : "Old",
    "definition" : "The identifier id no longer considered valid, but may be relevant for search purposes.  E.g. Changes to identifier schemes, account merges, etc."
  }]

}