---
type: "codesystem"
title: "Group Characteristic Combination"
codesystem: "group-characteristic-combination"
---
# Group Characteristic Combination

- **Official URL**: http://hl7.org/fhir/group-characteristic-combination
- **Version**: 6.0.0
- **Status**: active
- **Name**: GroupCharacteristicCombination
- **Title**: Group Characteristic Combination
- **Publisher**: HL7 (FHIR Project)
- **Description**: Logical grouping of characteristics.
- **Case Sensitive**: true
- **Content**: complete

## Concepts

| Code | Display | Definition |
| --- | --- | --- |
| all-of | All of | Combine characteristics with AND. |
| any-of | Any of | Combine characteristics with OR. |
| at-least | At least | Meet at least the threshold number of characteristics for definition. |
| at-most | At most | Meet at most the threshold number of characteristics for definition. |
| except-subset | Except subset | Meet the inclusion criteria under the condition that the basis does not match the exclusion criteria. |
| statistical | Statistical | Combine characteristics statistically. Use method to specify the statistical method. |
| net-effect | Net effect | Combine characteristics by addition of benefits and subtraction of harms. |
| dataset | Dataset | Combine characteristics as a collection used as the dataset. |

## CodeSystem XML



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

<CodeSystem xmlns="http://hl7.org/fhir">
  <id value="group-characteristic-combination"/>
  <extension url="http://hl7.org/fhir/StructureDefinition/structuredefinition-wg">
    <valueCode value="fhir"/>
  </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="1"/>
  </extension>
  <url value="http://hl7.org/fhir/group-characteristic-combination"/>
  <identifier>
    <system value="urn:ietf:rfc:3986"/>
    <value value="urn:oid:2.16.840.1.113883.4.642.4.1952"/>
  </identifier>
  <version value="6.0.0"/>
  <name value="GroupCharacteristicCombination"/>
  <title value="Group Characteristic Combination"/>
  <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="Logical grouping of characteristics."/>
  <caseSensitive value="true"/>
  <content value="complete"/>
  <concept>
    <code value="all-of"/>
    <display value="All of"/>
    <definition value="Combine characteristics with AND."/>
  </concept>
  <concept>
    <code value="any-of"/>
    <display value="Any of"/>
    <definition value="Combine characteristics with OR."/>
  </concept>
  <concept>
    <code value="at-least"/>
    <display value="At least"/>
    <definition value="Meet at least the threshold number of characteristics for definition."/>
  </concept>
  <concept>
    <code value="at-most"/>
    <display value="At most"/>
    <definition value="Meet at most the threshold number of characteristics for definition."/>
  </concept>
  <concept>
    <code value="except-subset"/>
    <display value="Except subset"/>
    <definition value="Meet the inclusion criteria under the condition that the basis does not match the exclusion criteria."/>
  </concept>
  <concept>
    <code value="statistical"/>
    <display value="Statistical"/>
    <definition value="Combine characteristics statistically. Use method to specify the statistical method."/>
  </concept>
  <concept>
    <code value="net-effect"/>
    <display value="Net effect"/>
    <definition value="Combine characteristics by addition of benefits and subtraction of harms."/>
  </concept>
  <concept>
    <code value="dataset"/>
    <display value="Dataset"/>
    <definition value="Combine characteristics as a collection used as the dataset."/>
  </concept>
</CodeSystem>
```