---
type: "codesystem"
title: "Expansion Processing Rule"
codesystem: "expansion-processing-rule"
---
# Expansion Processing Rule

- **Official URL**: http://hl7.org/fhir/expansion-processing-rule
- **Version**: 6.0.0
- **Name**: ExpansionProcessingRule
- **Title**: Expansion Processing Rule
- **Description**: ExpansionProcessingRule
- **Case Sensitive**: true
- **Content**: complete

## Concepts

| Code | Display | Definition |
| --- | --- | --- |
| all-codes | All Codes | he expansion (e.g. when in UI mode) includes all codes; those included in a group and those not included in a group, as well as the codes for the groups themselves (e.g. a parent node in a hierarchical code system). |
| ungrouped | Groups + Ungrouped codes | The expansion (e.g. when in UI mode) includes the codes for the groups, and any codes that are not included in a group. |
| groups-only | Groups Only | The expansion (e.g. when in UI mode) only includes the codes for the groups. |

## CodeSystem XML



```xml
<?xml version="1.0" encoding="UTF-8"?>

<CodeSystem xmlns="http://hl7.org/fhir">
  <id value="expansion-processing-rule"/>
  <meta>
    
  </meta>
  <extension url="http://hl7.org/fhir/StructureDefinition/structuredefinition-wg">
    <valueCode value="vocab"/>
  </extension>
  <url value="http://hl7.org/fhir/expansion-processing-rule"/>
  <identifier>
    <system value="urn:ietf:rfc:3986"/>
    <value value="urn:oid:2.16.840.1.113883.4.642.4.2014"/>
  </identifier>
  <version value="6.0.0"/>
  <name value="ExpansionProcessingRule"/>
  <title value="Expansion Processing Rule"/>
  <experimental value="true"/>
  <description value="ExpansionProcessingRule"/>
  <caseSensitive value="true"/>
  <content value="complete"/>
  <concept>
    <code value="all-codes"/>
    <display value="All Codes"/>
    <definition value="he expansion (e.g. when in UI mode) includes all codes; those included in a group and those not included in a group, as well as the codes for the groups themselves (e.g. a parent node in a hierarchical code system)."/>
  </concept>
  <concept>
    <code value="ungrouped"/>
    <display value="Groups + Ungrouped codes"/>
    <definition value="The expansion (e.g. when in UI mode) includes the codes for the groups, and any codes that are not included in a group."/>
  </concept>
  <concept>
    <code value="groups-only"/>
    <display value="Groups Only"/>
    <definition value="The expansion (e.g. when in UI mode) only includes the codes for the groups."/>
  </concept>
</CodeSystem>
```