# Sequence condition (2.5.1 - 1.0.0) - HL7 v2.5.1 Vocabulary v0.1.0

* [**Table of Contents**](toc.md)
* [**Artifacts Summary**](artifacts.md)
* **Sequence condition (2.5.1 - 1.0.0)**

## CodeSystem: Sequence condition (2.5.1 - 1.0.0) (Experimental) 

| | |
| :--- | :--- |
| *Official URL*:http://terminology.hl7.org/v2plusvocab/CodeSystem/sequenceCondition | *Version*:1.0.0 |
| Active as of 2026-01-27 | *Computable Name*:SequenceCondition |
| *Other Identifiers:*OID:2.16.840.1.113883.18.342 | |
| **Copyright/Legal**: HL7 Inc., 2026 | |

 
HL7-defined code system of concepts that identify whether sequence conditions or a repeating cycle of orders is defined. This is part of the Order Sequence Definition used in HL7 Version 2.x messaaging in the OSD datatype. 

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

* [Hl7VSsequenceCondition](ValueSet-hl7VSsequenceCondition.md)
* [Hl7VSsequenceConditionCode](ValueSet-hl7VSsequenceConditionCode.md)



## Resource Content

```json
{
  "resourceType" : "CodeSystem",
  "id" : "sequenceCondition",
  "extension" : [
    {
      "url" : "http://terminology.hl7.org/v2plusvocab/StructureDefinition/codesystem-v2versionCreated",
      "valueString" : "2.5.1"
    },
    {
      "url" : "http://terminology.hl7.org/v2plusvocab/StructureDefinition/codesystem-versionHistory",
      "valueString" : "generate correct history somehow"
    },
    {
      "url" : "http://terminology.hl7.org/v2plusvocab/StructureDefinition/codesystem-tableNo",
      "valueString" : "0524"
    }
  ],
  "url" : "http://terminology.hl7.org/v2plusvocab/CodeSystem/sequenceCondition",
  "identifier" : [
    {
      "system" : "urn:ietf:rfc:3986",
      "value" : "urn:oid:2.16.840.1.113883.18.342"
    }
  ],
  "version" : "1.0.0",
  "name" : "SequenceCondition",
  "title" : "Sequence condition (2.5.1 - 1.0.0)",
  "status" : "active",
  "experimental" : true,
  "date" : "2026-01-27T19:29:18+00:00",
  "publisher" : "HL7/FO",
  "contact" : [
    {
      "name" : "HL7/FO",
      "telecom" : [
        {
          "system" : "url",
          "value" : "http://www.hl7.org"
        }
      ]
    }
  ],
  "description" : "HL7-defined code system of concepts that identify whether sequence conditions or a repeating cycle of orders is defined.   This is part of the Order Sequence Definition used in HL7 Version 2.x messaaging in the OSD datatype.",
  "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" : "C",
      "display" : "Repeating cycle of orders",
      "definition" : "Repeating cycle of orders",
      "property" : [
        {
          "code" : "versionIntroduced",
          "valueString" : "2.5"
        }
      ]
    },
    {
      "code" : "R",
      "display" : "Reserved for possible future use",
      "definition" : "Reserved for possible future use",
      "property" : [
        {
          "code" : "versionIntroduced",
          "valueString" : "2.5"
        }
      ]
    },
    {
      "code" : "S",
      "display" : "Sequence conditions",
      "definition" : "Sequence conditions",
      "property" : [
        {
          "code" : "versionIntroduced",
          "valueString" : "2.5"
        }
      ]
    }
  ]
}

```
