# Expanded Yes/no Indicator (2.9 - 1.0.1) - HL7 v2.9 Vocabulary v0.1.0

* [**Table of Contents**](toc.md)
* [**Artifacts Summary**](artifacts.md)
* **Expanded Yes/no Indicator (2.9 - 1.0.1)**

## CodeSystem: Expanded Yes/no Indicator (2.9 - 1.0.1) (Experimental) 

| | |
| :--- | :--- |
| *Official URL*:http://terminology.hl7.org/v2plusvocab/CodeSystem/expandedYes-NoIndicator | *Version*:1.0.1 |
| Active as of 2026-01-27 | *Computable Name*:ExpandedYes-NoIndicator |
| *Other Identifiers:*OID:2.16.840.1.113883.18.347 | |
| **Copyright/Legal**: HL7 Inc., 2026 | |

 
HL7-defined code system of concepts used to specify an expansion on the original Yes/No indicator table by including "flavors of null". It is intended to be applied to fields where the response is not limited to "yes" or "no". Used in numerous locations in HL7 Version 2.x messaging. 

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

* [Hl7VSexpandedYes-NoIndicator](ValueSet-hl7VSexpandedYes-NoIndicator.md)
* [Hl7VSyes-no-Indicator](ValueSet-hl7VSyes-no-Indicator.md)



## Resource Content

```json
{
  "resourceType" : "CodeSystem",
  "id" : "expandedYes-NoIndicator",
  "extension" : [
    {
      "url" : "http://terminology.hl7.org/v2plusvocab/StructureDefinition/codesystem-v2versionCreated",
      "valueString" : "2.9"
    },
    {
      "url" : "http://terminology.hl7.org/v2plusvocab/StructureDefinition/codesystem-versionHistory",
      "valueString" : "generate correct history somehow"
    },
    {
      "url" : "http://terminology.hl7.org/v2plusvocab/StructureDefinition/codesystem-tableNo",
      "valueString" : "0532"
    }
  ],
  "url" : "http://terminology.hl7.org/v2plusvocab/CodeSystem/expandedYes-NoIndicator",
  "identifier" : [
    {
      "system" : "urn:ietf:rfc:3986",
      "value" : "urn:oid:2.16.840.1.113883.18.347"
    }
  ],
  "version" : "1.0.1",
  "name" : "ExpandedYes-NoIndicator",
  "title" : "Expanded Yes/no Indicator (2.9 - 1.0.1)",
  "status" : "active",
  "experimental" : true,
  "date" : "2026-01-27T19:46:43+00:00",
  "publisher" : "HL7/FO",
  "contact" : [
    {
      "name" : "HL7/FO",
      "telecom" : [
        {
          "system" : "url",
          "value" : "http://www.hl7.org"
        }
      ]
    }
  ],
  "description" : "HL7-defined code system of concepts used to specify an expansion on the original Yes/No indicator table by including \"flavors of null\".  It is intended to be applied to fields where the response is not limited to \"yes\" or \"no\".  Used in numerous locations in HL7 Version 2.x messaging.",
  "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"
    }
  ],
  "concept" : [
    {
      "code" : "ASKU",
      "display" : "asked but unknown",
      "definition" : "asked but unknown",
      "designation" : [
        {
          "language" : "de",
          "value" : "gefragt, aber nicht genannt"
        }
      ],
      "property" : [
        {
          "code" : "comment",
          "valueString" : "Information was sought but not found (e.g., patient was asked but didn't know"
        },
        {
          "code" : "modified",
          "valueDateTime" : "2015-07-13"
        },
        {
          "code" : "versionIntroduced",
          "valueString" : "2.5"
        }
      ]
    },
    {
      "code" : "N",
      "display" : "No",
      "definition" : "No",
      "designation" : [
        {
          "language" : "de",
          "value" : "Nein"
        }
      ],
      "property" : [
        {
          "code" : "modified",
          "valueDateTime" : "2015-07-13"
        },
        {
          "code" : "versionIntroduced",
          "valueString" : "2.5"
        }
      ]
    },
    {
      "code" : "NA",
      "display" : "not applicable",
      "definition" : "not applicable",
      "designation" : [
        {
          "language" : "de",
          "value" : "nicht anwendbar"
        }
      ],
      "property" : [
        {
          "code" : "comment",
          "valueString" : "No proper value is applicable in this context (e.g., last menstrual period for a male)"
        },
        {
          "code" : "modified",
          "valueDateTime" : "2015-07-13"
        },
        {
          "code" : "versionIntroduced",
          "valueString" : "2.5"
        }
      ]
    },
    {
      "code" : "NASK",
      "display" : "not asked",
      "definition" : "not asked",
      "designation" : [
        {
          "language" : "de",
          "value" : "nicht erfragt"
        }
      ],
      "property" : [
        {
          "code" : "comment",
          "valueString" : "This information has not been sought (e.g., patient was not asked"
        },
        {
          "code" : "modified",
          "valueDateTime" : "2015-07-13"
        },
        {
          "code" : "versionIntroduced",
          "valueString" : "2.5"
        }
      ]
    },
    {
      "code" : "NAV",
      "display" : "temporarily unavailable",
      "definition" : "temporarily unavailable",
      "designation" : [
        {
          "language" : "de",
          "value" : "temporär nicht verfügbar"
        }
      ],
      "property" : [
        {
          "code" : "comment",
          "valueString" : "Information is not available at this time but it is expected that it will be available later"
        },
        {
          "code" : "modified",
          "valueDateTime" : "2015-07-13"
        },
        {
          "code" : "versionIntroduced",
          "valueString" : "2.5"
        }
      ]
    },
    {
      "code" : "NI",
      "display" : "No Information",
      "definition" : "No Information",
      "designation" : [
        {
          "language" : "de",
          "value" : "keine Information"
        }
      ],
      "property" : [
        {
          "code" : "comment",
          "valueString" : "No information whatsoever can be inferred from this exceptional value. This is the most general exceptional value. It is also the default exceptional value"
        },
        {
          "code" : "modified",
          "valueDateTime" : "2015-07-13"
        },
        {
          "code" : "versionIntroduced",
          "valueString" : "2.5"
        }
      ]
    },
    {
      "code" : "NP",
      "display" : "not present",
      "definition" : "not present",
      "property" : [
        {
          "code" : "comment",
          "valueString" : "Obsolete as of v 2.7."
        },
        {
          "code" : "modified",
          "valueDateTime" : "2015-07-13"
        },
        {
          "code" : "versionIntroduced",
          "valueString" : "2.5"
        }
      ]
    },
    {
      "code" : "UNK",
      "display" : "unknown",
      "definition" : "unknown",
      "designation" : [
        {
          "language" : "de",
          "value" : "unbekannt"
        }
      ],
      "property" : [
        {
          "code" : "comment",
          "valueString" : "A proper value is applicable, but not known"
        },
        {
          "code" : "modified",
          "valueDateTime" : "2015-07-13"
        },
        {
          "code" : "versionIntroduced",
          "valueString" : "2.5"
        }
      ]
    },
    {
      "code" : "Y",
      "display" : "Yes",
      "definition" : "Yes",
      "designation" : [
        {
          "language" : "de",
          "value" : "Ja"
        }
      ],
      "property" : [
        {
          "code" : "modified",
          "valueDateTime" : "2015-07-13"
        },
        {
          "code" : "versionIntroduced",
          "valueString" : "2.5"
        }
      ]
    }
  ]
}

```
