---
type: "codesystem"
title: "Action Cardinality Behavior"
codesystem: "action-cardinality-behavior"
---
# Action Cardinality Behavior

- **Official URL**: http://hl7.org/fhir/action-cardinality-behavior
- **Version**: 6.0.0
- **Status**: active
- **Name**: ActionCardinalityBehavior
- **Title**: Action Cardinality Behavior
- **Publisher**: HL7 (FHIR Project)
- **Description**: Defines behavior for an action or a group for how many times that item may be repeated.
- **Case Sensitive**: true
- **Content**: complete

## Concepts

| Code | Display | Definition |
| --- | --- | --- |
| single | Single | The action may only be selected one time. |
| multiple | Multiple | The action may be selected multiple times. |

## CodeSystem XML



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

<CodeSystem xmlns="http://hl7.org/fhir">
  <id value="action-cardinality-behavior"/>
  <extension url="http://hl7.org/fhir/StructureDefinition/structuredefinition-wg">
    <valueCode value="cds"/>
  </extension>
  <extension url="http://hl7.org/fhir/StructureDefinition/structuredefinition-standards-status">
    <valueCode value="normative"/>
  </extension>
  <extension url="http://hl7.org/fhir/StructureDefinition/structuredefinition-fmm">
    <valueInteger value="3"/>
  </extension>
  <url value="http://hl7.org/fhir/action-cardinality-behavior"/>
  <identifier>
    <system value="urn:ietf:rfc:3986"/>
    <value value="urn:oid:2.16.840.1.113883.4.642.4.808"/>
  </identifier>
  <identifier>
    <use value="old"/>
    <system value="urn:ietf:rfc:3986"/>
    <value value="urn:oid:2.16.840.1.113883.4.642.1.791"/>
  </identifier>
  <version value="6.0.0"/>
  <name value="ActionCardinalityBehavior"/>
  <title value="Action Cardinality Behavior"/>
  <status value="active"/>
  <experimental value="false"/>
  <date value="2021-01-05T10:01:24+11:00"/>
  <publisher value="HL7 (FHIR Project)"/>
  <contact>
    <telecom>
      <system value="url"/>
      <value value="http://hl7.org/fhir"/>
    </telecom>
    <telecom>
      <system value="email"/>
      <value value="fhir@lists.hl7.org"/>
    </telecom>
  </contact>
  <description value="Defines behavior for an action or a group for how many times that item may be repeated."/>
  <caseSensitive value="true"/>
  <valueSet value="http://hl7.org/fhir/ValueSet/action-cardinality-behavior"/>
  <content value="complete"/>
  <concept>
    <code value="single"/>
    <display value="Single"/>
    <definition value="The action may only be selected one time."/>
  </concept>
  <concept>
    <code value="multiple"/>
    <display value="Multiple"/>
    <definition value="The action may be selected multiple times."/>
  </concept>
</CodeSystem>
```