# Identifier Type (2.3.1 - 1.1.0) - HL7 v2.3.1 Vocabulary v0.1.0

* [**Table of Contents**](toc.md)
* [**Artifacts Summary**](artifacts.md)
* **Identifier Type (2.3.1 - 1.1.0)**

## CodeSystem: Identifier Type (2.3.1 - 1.1.0) (Experimental) 

| | |
| :--- | :--- |
| *Official URL*:http://terminology.hl7.org/v2plusvocab/CodeSystem/identifierType | *Version*:1.1.0 |
| Active as of 2026-01-27 | *Computable Name*:IdentifierType |
| *Other Identifiers:*OID:2.16.840.1.113883.18.108 | |
| **Copyright/Legal**: HL7 Inc., 2026 | |

 
HL7-defined code system of concepts specifying type of identifier. Used in HL7 Version 2.x messaging data types CX, PLN, PPN, XCN and XON. 

 This Code system is referenced in the content logical definition of the following value sets: 

* [Hl7VSidentifierType](ValueSet-hl7VSidentifierType.md)



## Resource Content

```json
{
  "resourceType" : "CodeSystem",
  "id" : "identifierType",
  "extension" : [
    {
      "url" : "http://terminology.hl7.org/v2plusvocab/StructureDefinition/codesystem-v2versionCreated",
      "valueString" : "2.3.1"
    },
    {
      "url" : "http://terminology.hl7.org/v2plusvocab/StructureDefinition/codesystem-versionHistory",
      "valueString" : "generate correct history somehow"
    },
    {
      "url" : "http://terminology.hl7.org/v2plusvocab/StructureDefinition/codesystem-tableNo",
      "valueString" : "0203"
    }
  ],
  "url" : "http://terminology.hl7.org/v2plusvocab/CodeSystem/identifierType",
  "identifier" : [
    {
      "system" : "urn:ietf:rfc:3986",
      "value" : "urn:oid:2.16.840.1.113883.18.108"
    }
  ],
  "version" : "1.1.0",
  "name" : "IdentifierType",
  "title" : "Identifier Type (2.3.1 - 1.1.0)",
  "status" : "active",
  "experimental" : true,
  "date" : "2026-01-27T19:22:40+00:00",
  "publisher" : "HL7/FO",
  "contact" : [
    {
      "name" : "HL7/FO",
      "telecom" : [
        {
          "system" : "url",
          "value" : "http://www.hl7.org"
        }
      ]
    }
  ],
  "description" : "HL7-defined code system of concepts specifying type of identifier. Used in HL7 Version 2.x messaging data types CX, PLN, PPN, XCN and XON.",
  "copyright" : "HL7 Inc., 2026",
  "caseSensitive" : true,
  "compositional" : false,
  "content" : "complete",
  "property" : [
    {
      "code" : "versionIntroduced",
      "uri" : "http://terminology.hl7.org/v2plusvocab/CodeSystem/Property#versionIntroduced",
      "description" : "version when was this code introduced",
      "type" : "string"
    },
    {
      "code" : "versionDeprecated",
      "uri" : "http://terminology.hl7.org/v2plusvocab/CodeSystem/Property#versionDeprecated",
      "description" : "version when was this code deprecated",
      "type" : "string"
    },
    {
      "code" : "status",
      "uri" : "http://hl7.org/fhir/concept-properties#status",
      "description" : "A code that indicates the status of the concept. Typical values are active, experimental, deprecated, and retired",
      "type" : "code"
    },
    {
      "code" : "comment",
      "uri" : "http://terminology.hl7.org/v2plusvocab/CodeSystem/Property#comment",
      "description" : "A string that provides additional detail pertinent to the use or understanding of the concept",
      "type" : "string"
    },
    {
      "code" : "usage",
      "uri" : "http://terminology.hl7.org/v2plusvocab/CodeSystem/Property#usage",
      "description" : "usage notes for this code",
      "type" : "string"
    },
    {
      "code" : "modified",
      "uri" : "http://terminology.hl7.org/v2plusvocab/CodeSystem/Property#modified",
      "description" : "date of last modification",
      "type" : "dateTime"
    },
    {
      "code" : "class",
      "uri" : "http://terminology.hl7.org/v2plusvocab/CodeSystem/Property#class",
      "description" : "class",
      "type" : "code"
    }
  ],
  "concept" : [
    {
      "code" : "AM",
      "display" : "American Express",
      "definition" : "American Express",
      "designation" : [
        {
          "language" : "de",
          "value" : "American Express"
        }
      ],
      "property" : [
        {
          "code" : "versionIntroduced",
          "valueString" : "2.3"
        }
      ]
    },
    {
      "code" : "AN",
      "display" : "Account number",
      "definition" : "Account number",
      "designation" : [
        {
          "language" : "de",
          "value" : "Kontonummer"
        }
      ],
      "property" : [
        {
          "code" : "versionIntroduced",
          "valueString" : "2.3"
        }
      ]
    },
    {
      "code" : "BR",
      "display" : "Birth registry number",
      "definition" : "Birth registry number",
      "designation" : [
        {
          "language" : "de",
          "value" : "Geburtsregisternummer"
        }
      ],
      "property" : [
        {
          "code" : "versionIntroduced",
          "valueString" : "2.3"
        }
      ]
    },
    {
      "code" : "DI",
      "display" : "Diner’s Club card",
      "definition" : "Diner’s Club card",
      "designation" : [
        {
          "language" : "de",
          "value" : "Diners Club"
        }
      ],
      "property" : [
        {
          "code" : "versionIntroduced",
          "valueString" : "2.3"
        }
      ]
    },
    {
      "code" : "DL",
      "display" : "Driver’s license number",
      "definition" : "Driver’s license number",
      "designation" : [
        {
          "language" : "de",
          "value" : "Führerscheinnummer"
        }
      ],
      "property" : [
        {
          "code" : "versionIntroduced",
          "valueString" : "2.3"
        }
      ]
    },
    {
      "code" : "DN",
      "display" : "Doctor number",
      "definition" : "Doctor number",
      "designation" : [
        {
          "language" : "de",
          "value" : "Arztnummer"
        }
      ],
      "property" : [
        {
          "code" : "versionIntroduced",
          "valueString" : "2.3"
        }
      ]
    },
    {
      "code" : "DS",
      "display" : "Discover Card",
      "definition" : "Discover Card",
      "designation" : [
        {
          "language" : "de",
          "value" : "Discover Card"
        }
      ],
      "property" : [
        {
          "code" : "versionIntroduced",
          "valueString" : "2.3"
        }
      ]
    },
    {
      "code" : "EI",
      "display" : "Employee number",
      "definition" : "Employee number",
      "designation" : [
        {
          "language" : "de",
          "value" : "Arbeitnehmernummer"
        }
      ],
      "property" : [
        {
          "code" : "versionIntroduced",
          "valueString" : "2.3"
        }
      ]
    },
    {
      "code" : "EN",
      "display" : "Employer number",
      "definition" : "Employer number",
      "designation" : [
        {
          "language" : "de",
          "value" : "Arbeitgebernummer"
        }
      ],
      "property" : [
        {
          "code" : "versionIntroduced",
          "valueString" : "2.3"
        }
      ]
    },
    {
      "code" : "FI",
      "display" : "Facility ID",
      "definition" : "Facility ID",
      "property" : [
        {
          "code" : "versionIntroduced",
          "valueString" : "2.3.1"
        }
      ]
    },
    {
      "code" : "GI",
      "display" : "Guarantor internal identifier",
      "definition" : "Guarantor internal identifier",
      "designation" : [
        {
          "language" : "de",
          "value" : "interne ID des Zahlungspflichtigen"
        }
      ],
      "property" : [
        {
          "code" : "versionIntroduced",
          "valueString" : "2.3"
        }
      ]
    },
    {
      "code" : "GN",
      "display" : "Guarantor external  identifier",
      "definition" : "Guarantor external  identifier",
      "designation" : [
        {
          "language" : "de",
          "value" : "externe ID des Zahlungspflichtigen"
        }
      ],
      "property" : [
        {
          "code" : "versionIntroduced",
          "valueString" : "2.3"
        }
      ]
    },
    {
      "code" : "LN",
      "display" : "License number",
      "definition" : "License number",
      "property" : [
        {
          "code" : "versionIntroduced",
          "valueString" : "2.3.1"
        }
      ]
    },
    {
      "code" : "LR",
      "display" : "Local Registry ID",
      "definition" : "Local Registry ID",
      "property" : [
        {
          "code" : "versionIntroduced",
          "valueString" : "2.3.1"
        }
      ]
    },
    {
      "code" : "MA",
      "display" : "Medicaid number",
      "definition" : "Medicaid number",
      "designation" : [
        {
          "language" : "de",
          "value" : "Armennummer"
        }
      ],
      "property" : [
        {
          "code" : "versionIntroduced",
          "valueString" : "2.3"
        }
      ]
    },
    {
      "code" : "MC",
      "display" : "Medicare number",
      "definition" : "Medicare number",
      "designation" : [
        {
          "language" : "de",
          "value" : "Rentnernummer"
        }
      ],
      "property" : [
        {
          "code" : "versionIntroduced",
          "valueString" : "2.3"
        }
      ]
    },
    {
      "code" : "MR",
      "display" : "Medical record number",
      "definition" : "Medical record number",
      "designation" : [
        {
          "language" : "de",
          "value" : "Krankenaktennummer"
        }
      ],
      "property" : [
        {
          "code" : "versionIntroduced",
          "valueString" : "2.3"
        }
      ]
    },
    {
      "code" : "MS",
      "display" : "MasterCard",
      "definition" : "MasterCard",
      "designation" : [
        {
          "language" : "de",
          "value" : "MasterCard"
        }
      ],
      "property" : [
        {
          "code" : "versionIntroduced",
          "valueString" : "2.3"
        }
      ]
    },
    {
      "code" : "NE",
      "display" : "National employer identifier",
      "definition" : "National employer identifier",
      "property" : [
        {
          "code" : "versionIntroduced",
          "valueString" : "2.3.1"
        }
      ]
    },
    {
      "code" : "NH",
      "display" : "National Health Plan Identifier",
      "definition" : "National Health Plan Identifier",
      "property" : [
        {
          "code" : "versionIntroduced",
          "valueString" : "2.3.1"
        }
      ]
    },
    {
      "code" : "NI",
      "display" : "National unique individual identifier",
      "definition" : "National unique individual identifier",
      "property" : [
        {
          "code" : "versionIntroduced",
          "valueString" : "2.3.1"
        }
      ]
    },
    {
      "code" : "NNxxx",
      "display" : "National Person Identifier where the xxx is the ISO table 3166  3-character (alphabetic) country  code",
      "definition" : "National Person Identifier where the xxx is the ISO table 3166  3-character (alphabetic) country  code",
      "property" : [
        {
          "code" : "versionIntroduced",
          "valueString" : "2.3.1"
        }
      ]
    },
    {
      "code" : "NPI",
      "display" : "National provider identifier",
      "definition" : "National provider identifier",
      "property" : [
        {
          "code" : "versionIntroduced",
          "valueString" : "2.3.1"
        }
      ]
    },
    {
      "code" : "PI",
      "display" : "Patient internal identifier",
      "definition" : "Patient internal identifier",
      "designation" : [
        {
          "language" : "de",
          "value" : "interne Patienten-ID"
        }
      ],
      "property" : [
        {
          "code" : "versionIntroduced",
          "valueString" : "2.3"
        }
      ]
    },
    {
      "code" : "PN",
      "display" : "Person number",
      "definition" : "Person number",
      "designation" : [
        {
          "language" : "de",
          "value" : "Personen-ID"
        }
      ],
      "property" : [
        {
          "code" : "versionIntroduced",
          "valueString" : "2.3.1"
        }
      ]
    },
    {
      "code" : "PRN",
      "display" : "Provider number",
      "definition" : "Provider number",
      "property" : [
        {
          "code" : "versionIntroduced",
          "valueString" : "2.3.1"
        }
      ]
    },
    {
      "code" : "PT",
      "display" : "Patient external identifier",
      "definition" : "Patient external identifier",
      "designation" : [
        {
          "language" : "de",
          "value" : "externe Patienten-ID"
        }
      ],
      "property" : [
        {
          "code" : "versionIntroduced",
          "valueString" : "2.3"
        }
      ]
    },
    {
      "code" : "RR",
      "display" : "Railroad Retirement number",
      "definition" : "Railroad Retirement number",
      "designation" : [
        {
          "language" : "de",
          "value" : "Seniorenkartennummer"
        }
      ],
      "property" : [
        {
          "code" : "versionIntroduced",
          "valueString" : "2.3"
        }
      ]
    },
    {
      "code" : "RRI",
      "display" : "Regional registry ID",
      "definition" : "Regional registry ID",
      "property" : [
        {
          "code" : "versionIntroduced",
          "valueString" : "2.3.1"
        }
      ]
    },
    {
      "code" : "SL",
      "display" : "State license",
      "definition" : "State license",
      "property" : [
        {
          "code" : "versionIntroduced",
          "valueString" : "2.3.1"
        }
      ]
    },
    {
      "code" : "SR",
      "display" : "State registry ID",
      "definition" : "State registry ID",
      "property" : [
        {
          "code" : "versionIntroduced",
          "valueString" : "2.3.1"
        }
      ]
    },
    {
      "code" : "SS",
      "display" : "Social Security number",
      "definition" : "Social Security number",
      "designation" : [
        {
          "language" : "de",
          "value" : "Sozialversicherungsnummer"
        }
      ],
      "property" : [
        {
          "code" : "versionIntroduced",
          "valueString" : "2.3"
        }
      ]
    },
    {
      "code" : "U",
      "display" : "Unspecified",
      "definition" : "Unspecified",
      "property" : [
        {
          "code" : "versionIntroduced",
          "valueString" : "2.3.1"
        }
      ]
    },
    {
      "code" : "UPIN",
      "display" : "Medicare/HCFA’s Universal Physician Identification numbers",
      "definition" : "Medicare/HCFA’s Universal Physician Identification numbers",
      "property" : [
        {
          "code" : "versionIntroduced",
          "valueString" : "2.3.1"
        }
      ]
    },
    {
      "code" : "VN",
      "display" : "Visit number",
      "definition" : "Visit number",
      "designation" : [
        {
          "language" : "de",
          "value" : "Fallnummer"
        }
      ],
      "property" : [
        {
          "code" : "versionIntroduced",
          "valueString" : "2.3"
        }
      ]
    },
    {
      "code" : "VS",
      "display" : "VISA",
      "definition" : "VISA",
      "designation" : [
        {
          "language" : "de",
          "value" : "VISA"
        }
      ],
      "property" : [
        {
          "code" : "versionIntroduced",
          "valueString" : "2.3"
        }
      ]
    },
    {
      "code" : "WC",
      "display" : "WIC identifier",
      "definition" : "WIC identifier",
      "property" : [
        {
          "code" : "versionIntroduced",
          "valueString" : "2.3.1"
        }
      ]
    },
    {
      "code" : "XX",
      "display" : "Organization identifier",
      "definition" : "Organization identifier",
      "designation" : [
        {
          "language" : "de",
          "value" : "Organisations-ID"
        }
      ],
      "property" : [
        {
          "code" : "versionIntroduced",
          "valueString" : "2.3"
        }
      ]
    }
  ]
}

```
