# Observation Type (2.9 - 1.0.1) - HL7 v2.9 Vocabulary v0.1.0

* [**Table of Contents**](toc.md)
* [**Artifacts Summary**](artifacts.md)
* **Observation Type (2.9 - 1.0.1)**

## CodeSystem: Observation Type (2.9 - 1.0.1) (Experimental) 

| | |
| :--- | :--- |
| *Official URL*:http://terminology.hl7.org/v2plusvocab/CodeSystem/observationType | *Version*:1.0.1 |
| Active as of 2026-01-27 | *Computable Name*:ObservationType |
| *Other Identifiers:*OID:2.16.840.1.113883.18.439 | |
| **Copyright/Legal**: HL7 Inc., 2026 | |

 
HL7-defined code system of concepts specifying types of observations to enable systems to distinguish between observations sent along with an order, versus observations sent as the result to an order. Used in HL7 Version 2.x messaging in the OBX segment. 

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

* [Hl7VSVS-observationType](ValueSet-hl7VSVS-observationType.md)



## Resource Content

```json
{
  "resourceType" : "CodeSystem",
  "id" : "observationType",
  "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" : "0936"
    }
  ],
  "url" : "http://terminology.hl7.org/v2plusvocab/CodeSystem/observationType",
  "identifier" : [
    {
      "system" : "urn:ietf:rfc:3986",
      "value" : "urn:oid:2.16.840.1.113883.18.439"
    }
  ],
  "version" : "1.0.1",
  "name" : "ObservationType",
  "title" : "Observation Type (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 specifying types of observations to enable systems to distinguish between observations sent along with an order, versus observations sent as the result to an order. Used in HL7 Version 2.x messaging in the OBX segment.",
  "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" : "QST",
      "display" : "Question",
      "definition" : "Question",
      "property" : [
        {
          "code" : "comment",
          "valueString" : "Limited to expected responses to questions by the filler"
        },
        {
          "code" : "modified",
          "valueDateTime" : "2015-07-13"
        },
        {
          "code" : "versionIntroduced",
          "valueString" : "2.8.2"
        }
      ]
    },
    {
      "code" : "RSLT",
      "display" : "Result",
      "definition" : "Result",
      "property" : [
        {
          "code" : "modified",
          "valueDateTime" : "2015-07-13"
        },
        {
          "code" : "versionIntroduced",
          "valueString" : "2.8.2"
        }
      ]
    },
    {
      "code" : "SCI",
      "display" : "Supporting Clinical Information",
      "definition" : "Supporting Clinical Information",
      "property" : [
        {
          "code" : "comment",
          "valueString" : "Placer observations not explicitly requested by the filler to provide context or supporting information"
        },
        {
          "code" : "modified",
          "valueDateTime" : "2015-07-13"
        },
        {
          "code" : "versionIntroduced",
          "valueString" : "2.8.2"
        }
      ]
    }
  ]
}

```
