# Reorder Theory Codes (2.9.1 - 1.0.1) - HL7 v2.9.1 Vocabulary v0.2.0

* [**Table of Contents**](toc.md)
* [**Artifacts Summary**](artifacts.md)
* **Reorder Theory Codes (2.9.1 - 1.0.1)**

## CodeSystem: Reorder Theory Codes (2.9.1 - 1.0.1) (Experimental) 

| | |
| :--- | :--- |
| *Official URL*:http://terminology.hl7.org/v2plusvocab/CodeSystem/reorderTheory | *Version*:1.0.1 |
| Active as of 2026-03-13 | *Computable Name*:ReorderTheory |
| *Other Identifiers:*OID:2.16.840.1.113883.18.379, urn:ietf:rfc:3986#Uniform Resource Identifier (URI)#http://terminology.hl7.org/v2plusvocab/CodeSystem/v2-0642 | |
| **Copyright/Legal**: HL7 Inc., 2026 | |

 
Code system of concepts that identify the calculation method used to determine the resupply schedule. Used in HL7 Version 2.x messaging in the IVT segment. 

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

* [Hl7VSreorderTheoryCodes](ValueSet-hl7VSreorderTheoryCodes.md)



## Resource Content

```json
{
  "resourceType" : "CodeSystem",
  "id" : "reorderTheory",
  "extension" : [{
    "url" : "http://terminology.hl7.org/v2plusvocab/StructureDefinition/codesystem-v2versionCreated",
    "valueString" : "2.9.1"
  },
  {
    "url" : "http://terminology.hl7.org/v2plusvocab/StructureDefinition/codesystem-versionHistory",
    "valueString" : "generate correct history somehow"
  },
  {
    "url" : "http://terminology.hl7.org/v2plusvocab/StructureDefinition/codesystem-tableNo",
    "valueString" : "0642"
  }],
  "url" : "http://terminology.hl7.org/v2plusvocab/CodeSystem/reorderTheory",
  "identifier" : [{
    "system" : "urn:ietf:rfc:3986",
    "value" : "urn:oid:2.16.840.1.113883.18.379"
  },
  {
    "system" : "urn:ietf:rfc:3986",
    "value" : "http://terminology.hl7.org/v2plusvocab/CodeSystem/v2-0642"
  }],
  "version" : "1.0.1",
  "name" : "ReorderTheory",
  "title" : "Reorder Theory Codes (2.9.1 - 1.0.1)",
  "status" : "active",
  "experimental" : true,
  "date" : "2026-03-13T11:04:57+00:00",
  "publisher" : "HL7/FO",
  "contact" : [{
    "name" : "HL7/FO",
    "telecom" : [{
      "system" : "url",
      "value" : "http://www.hl7.org"
    }]
  }],
  "description" : "Code system of concepts that identify the calculation method used to determine the resupply schedule. Used in HL7 Version 2.x messaging in the IVT 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" : [{
    "id" : "6269",
    "code" : "D",
    "display" : "DOP/DOQ",
    "definition" : "DOP/DOQ",
    "property" : [{
      "code" : "comment",
      "valueString" : "Corresponds to the theory that calculates the appropriate order point and recommends the quantity to order based on system parameters and historical trends.  DOP stands for Dynamic Order Point, and DOQ stands for Dynamic Order Quantity."
    },
    {
      "code" : "modified",
      "valueDateTime" : "2015-07-13"
    },
    {
      "code" : "versionIntroduced",
      "valueString" : "2.6"
    }]
  },
  {
    "id" : "6270",
    "code" : "M",
    "display" : "MIN/MAX",
    "definition" : "MIN/MAX",
    "property" : [{
      "code" : "comment",
      "valueString" : "Corresponds to theory - the quantity recommended is the Order Quantity, less the On Hand Quantity, and less the On Order Quantity.  The Order Amount is the desired Maximum On Hand Quantity."
    },
    {
      "code" : "modified",
      "valueDateTime" : "2015-07-13"
    },
    {
      "code" : "versionIntroduced",
      "valueString" : "2.6"
    }]
  },
  {
    "id" : "6271",
    "code" : "O",
    "display" : "Override",
    "definition" : "Override",
    "property" : [{
      "code" : "comment",
      "valueString" : "The quantity recommended is the Order Quantity, less the On Order Quantity.  The Order Amount is the amount to order when the On Hand reaches the Order Point."
    },
    {
      "code" : "modified",
      "valueDateTime" : "2015-07-13"
    },
    {
      "code" : "versionIntroduced",
      "valueString" : "2.6"
    }]
  }]
}

```
