Definition for Code System FilterOperator SystemFilterOperator

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


  
  
    
  
  
    
    
      
      
        

      
      
      
        
          
            
          
          
            
          
          
            
          
          
            
          
        
        
          =
            
          
          
          
          
        
        
          is-a
            
          
          
          Includes all concept ids that have a transitive is-a relationship with the concept Id
             provided as the value, including the provided concept itself (include descendant codes
             and self).
          The definition of is-a is that all the properties of the value are true for the specified
             property of the code, which means that a code has an is-a relationship with itself. To
             exclude the root code, use descendent-of
        
        
          descendent-of
            
          
          
          Includes all concept ids that have a transitive is-a relationship with the concept Id
             provided as the value, excluding the provided concept itself i.e. include descendant codes
             only).
          The definition of is-a is that all the properties of the value are true for the specified
             property of the code. 

Spelling note: &quot;descendant&quot; is a more correct spelling, but the spelling &quot;descendent&
            quot; is maintained in the code for backwards compatibility reasons
        
        
          is-not-a
            
          
          
          The specified property of the code does not have an is-a relationship with the provided
             value.
          
        
        
          regex
            
          
          
          
          
        
        
          in
            
          
          
          The specified property of the code is in the set of codes or concepts specified in the
             provided value (comma separated list).
          
        
        
          not-in
            
          
          
          The specified property of the code is not in the set of codes or concepts specified in
             the provided value (comma separated list).
          
        
        
          generalizes
            
          
          
          Includes all concept ids that have a transitive is-a relationship from the concept Id
             provided as the value, including the provided concept itself (i.e. include ancestor codes
             and self).
          The definition of is-a is that all the properties of the value are true for the specified
             property of the code, which means that a code has an is-a relationship with itself. To
             exclude the root code, add it explicitly to as an exclude
        
        
          exists
            
          
          
          The specified property of the code has at least one value (if the specified value is true;
             if the specified value is false, then matches when the specified property of the code
             has no values).
          
        
      
    
  
  
    
  
  
    
  
  
    
  
  
    
  
  
  
    
    
  
  
  
  
  
  
  
  
  
    
      
      
    
    
      
      
    
  
  
  
  
  
  
    
    
    
  
  
    
      The definition of is-a is that all the properties of the value are true for the specified
       property of the code, which means that a code has an is-a relationship with itself. To
       exclude the root code, use descendent-of
    
    
    
    Includes all concept ids that have a transitive is-a relationship with the concept Id
     provided as the value, including the provided concept itself (include descendant codes
     and self).
  
  
    
      The definition of is-a is that all the properties of the value are true for the specified
       property of the code. 

Spelling note: &quot;descendant&quot; is a more correct spelling, but the spelling &quot;descendent&
      quot; is maintained in the code for backwards compatibility reasons
    
    
    
    Includes all concept ids that have a transitive is-a relationship with the concept Id
     provided as the value, excluding the provided concept itself i.e. include descendant codes
     only).
  
  
    
    
    The specified property of the code does not have an is-a relationship with the provided
     value.
  
  
    
    
    
  
  
    
    
    The specified property of the code is in the set of codes or concepts specified in the
     provided value (comma separated list).
  
  
    
    
    The specified property of the code is not in the set of codes or concepts specified in
     the provided value (comma separated list).
  
  
    
      The definition of is-a is that all the properties of the value are true for the specified
       property of the code, which means that a code has an is-a relationship with itself. To
       exclude the root code, add it explicitly to as an exclude
    
    
    
    Includes all concept ids that have a transitive is-a relationship from the concept Id
     provided as the value, including the provided concept itself (i.e. include ancestor codes
     and self).
  
  
    
    
    The specified property of the code has at least one value (if the specified value is true;
     if the specified value is false, then matches when the specified property of the code
     has no values).
  

<CodeSystem xmlns="http://hl7.org/fhir">
  <id value="filter-operator"/> 
  <meta> 
    <lastUpdated value="2025-12-17T20:50:17.012+11:00"/> 
  </meta> 
  <text> 
    <status value="extensions"/> 
    <div xmlns="http://www.w3.org/1999/xhtml">
      
      
      
      
      
      <p> This code system http://hl7.org/fhir/filter-operator defines the following codes:</p> 
      
      
      
      
      
      <table class="codes">
        
        
        
        
        
        <tr> 
          
          
          
          
          
          <td style="white-space:nowrap">
            
            
            
            
            
            <b> Code</b> 
          
          
          
          
          
          </td> 
          
          
          
          
          
          <td> 
            
            
            
            
            
            <b> Display</b> 
          
          
          
          
          
          </td> 
          
          
          
          
          
          <td> 
            
            
            
            
            
            <b> Definition</b> 
          
          
          
          
          
          </td> 
          
          
          
          
          
          <td> 
            
            
            
            
            
            <b> Comments</b> 
          
          
          
          
          
          </td> 
        
        
        
        
        
        </tr> 
        
        
        
        
        
        <tr> 
          
          
          
          
          
          <td style="white-space:nowrap">=
            
            
            
            
            
            <a name="filter-operator-.61"> </a> 
          
          
          
          
          
          </td> 
          
          
          
          
          
          <td> Equals</td> 
          
          
          
          
          
          <td> The specified property of the code equals the provided value.</td> 
          
          
          
          
          
          <td/>  
        
        
        
        
        
        </tr> 
        
        
        
        
        
        <tr> 
          
          
          
          
          
          <td style="white-space:nowrap">is-a
            
            
            
            
            
            <a name="filter-operator-is-a"> </a> 
          
          
          
          
          
          </td> 
          
          
          
          
          
          <td> Is A (by subsumption)</td> 
          
          
          
          
          
          <td> Includes all concept ids that have a transitive is-a relationship with the concept

             Id provided as the value, including the provided concept itself (include descendant
             codes and self).</td> 
          
          
          
          
          
          <td> The definition of is-a is that all the properties of the value are true for the

             specified property of the code, which means that a code has an is-a relationship
             with itself. To exclude the root code, use descendent-of</td> 
        
        
        
        
        
        </tr> 
        
        
        
        
        
        <tr> 
          
          
          
          
          
          <td style="white-space:nowrap">descendent-of
            
            
            
            
            
            <a name="filter-operator-descendent-of"> </a> 
          
          
          
          
          
          </td> 
          
          
          
          
          
          <td> Descendent Of (by subsumption)</td> 
          
          
          
          
          
          <td> Includes all concept ids that have a transitive is-a relationship with the concept

             Id provided as the value, excluding the provided concept itself i.e. include descendant
             codes only).</td> 
          
          
          
          
          
          <td> The definition of is-a is that all the properties of the value are true for the

             specified property of the code. 
Spelling note: &quot;descendant&quot; is a more correct spelling, but the spelling
             &quot;descendent&quot; is maintained in the code for backwards compatibility reasons</td> 
        
        
        
        
        
        </tr> 
        
        
        
        
        
        <tr> 
          
          
          
          
          
          <td style="white-space:nowrap">is-not-a
            
            
            
            
            
            <a name="filter-operator-is-not-a"> </a> 
          
          
          
          
          
          </td> 
          
          
          
          
          
          <td> Not (Is A) (by subsumption)</td> 
          
          
          
          
          
          <td> The specified property of the code does not have an is-a relationship with the

             provided value.</td> 
          
          
          
          
          
          <td/>  
        
        
        
        
        
        </tr> 
        
        
        
        
        
        <tr> 
          
          
          
          
          
          <td style="white-space:nowrap">regex
            
            
            
            
            
            <a name="filter-operator-regex"> </a> 
          
          
          
          
          
          </td> 
          
          
          
          
          
          <td> Regular Expression</td> 
          
          
          
          
          
          <td> The specified property of the code  matches the regex specified in the provided

             value.</td> 
          
          
          
          
          
          <td/>  
        
        
        
        
        
        </tr> 
        
        
        
        
        
        <tr> 
          
          
          
          
          
          <td style="white-space:nowrap">in
            
            
            
            
            
            <a name="filter-operator-in"> </a> 
          
          
          
          
          
          </td> 
          
          
          
          
          
          <td> In Set</td> 
          
          
          
          
          
          <td> The specified property of the code is in the set of codes or concepts specified

             in the provided value (comma-separated list).</td> 
          
          
          
          
          
          <td/>  
        
        
        
        
        
        </tr> 
        
        
        
        
        
        <tr> 
          
          
          
          
          
          <td style="white-space:nowrap">not-in
            
            
            
            
            
            <a name="filter-operator-not-in"> </a> 
          
          
          
          
          
          </td> 
          
          
          
          
          
          <td> Not in Set</td> 
          
          
          
          
          
          <td> The specified property of the code is not in the set of codes or concepts specified

             in the provided value (comma-separated list).</td> 
          
          
          
          
          
          <td/>  
        
        
        
        
        
        </tr> 
        
        
        
        
        
        <tr> 
          
          
          
          
          
          <td style="white-space:nowrap">generalizes
            
            
            
            
            
            <a name="filter-operator-generalizes"> </a> 
          
          
          
          
          
          </td> 
          
          
          
          
          
          <td> Generalizes (by Subsumption)</td> 
          
          
          
          
          
          <td> Includes all concept ids that have a transitive is-a relationship from the concept

             Id provided as the value, including the provided concept itself (i.e. include ancestor
             codes and self).</td> 
          
          
          
          
          
          <td> The definition of is-a is that all the properties of the value are true for the

             specified property of the code, which means that a code has an is-a relationship
             with itself. To exclude the root code, add it explicitly to as an exclude</td> 
        
        
        
        
        
        </tr> 
        
        
        
        
        
        <tr> 
          
          
          
          
          
          <td style="white-space:nowrap">exists
            
            
            
            
            
            <a name="filter-operator-exists"> </a> 
          
          
          
          
          
          </td> 
          
          
          
          
          
          <td> Exists</td> 
          
          
          
          
          
          <td> The specified property of the code has at least one value (if the specified value

             is true; if the specified value is false, then matches when the specified property
             of the code has no values).</td> 
          
          
          
          
          
          <td/>  
        
        
        
        
        
        </tr> 
    
    
        
        
        
        <tr> 
          
          
          
          
          
          <td style="white-space:nowrap">child-of
            
            
            
            
            
            <a name="filter-operator-child-of"> </a> 
          
          
          
          
          
          </td> 
          
          
          
          
          
          <td> Child Of</td> 
          
          
          
          
          
          <td> Only concepts with a direct hierarchical relationship to the index code and no

             other concepts. This does not include the index code in the output.</td> 
          
          
          
          
          
          <td/>  
        
        
        
        
        
        </tr> 
    
    
        
        
        
        <tr> 
          
          
          
          
          
          <td style="white-space:nowrap">descendent-leaf
            
            
            
            
            
            <a name="filter-operator-descendent-leaf"> </a> 
          
          
          
          
          
          </td> 
          
          
          
          
          
          <td> Descendent Leaf</td> 
          
          
          
          
          
          <td> Includes concept ids that have a transitive is-a relationship with the concept

             Id provided as the value, but which do not have any concept ids with transitive
             is-a relationships with themselves.</td> 
          
          
          
          
          
          <td/>  
        
        
        
        
        
        </tr> 
      
      
      
      
      
      </table> 
    
    
    
    
    
    </div>   </text>   <extension url="http://hl7.org/fhir/StructureDefinition/structuredefinition-wg">    <valueCode value="vocab"/>   </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="5"/>   </extension>   <url value="http://hl7.org/fhir/filter-operator"/>   <identifier>     <system value="urn:ietf:rfc:3986"/>     <value value="urn:oid:2.16.840.1.113883.4.642.4.479"/>   </identifier>   <identifier>     <use value="old"/>     <system value="urn:ietf:rfc:3986"/>     <value value="urn:oid:2.16.840.1.113883.4.642.1.472"/>   </identifier>   <identifier>     <use value="old"/>     <system value="urn:ietf:rfc:3986"/>     <value value="urn:oid:2.16.840.1.113883.4.642.2.280"/>   </identifier>   <version value="6.0.0-ballot3"/>   <name value="FilterOperator"/>   <title value="Filter Operator"/>   <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="The kind of operation to perform as a part of a property based filter."/>   <jurisdiction>     <coding>       <system value="http://unstats.un.org/unsd/methods/m49/m49.htm"/>       <code value="001"/>       <display value="World"/>     </coding>   </jurisdiction>   <caseSensitive value="true"/>   <valueSet value="http://hl7.org/fhir/ValueSet/filter-operator"/>   <content value="complete"/>   <concept>     <code value="="/>     <display value="Equals"/>     <definition value="The specified property of the code equals the provided value."/>   </concept>   <concept>     <code value="is-a"/>     <display value="Is A (by subsumption)"/>     <definition value="Includes all concept ids that have a transitive is-a relationship with the concept

     Id provided as the value, including the provided concept itself (include descendant
     codes and self)."/> 
    <property>       <code value="comments"/>       <valueString value="The definition of is-a is that all the properties of the value are true for the

       specified property of the code, which means that a code has an is-a relationship
       with itself. To exclude the root code, use descendent-of"/> 
    </property>   </concept>   <concept>     <code value="descendent-of"/>     <display value="Descendent Of (by subsumption)"/>     <definition value="Includes all concept ids that have a transitive is-a relationship with the concept

     Id provided as the value, excluding the provided concept itself (i.e. include descendant
     codes only)."/> 
    <property>       <code value="comments"/>       <valueString value="The definition of is-a is that all the properties of the value are true for the

       specified property of the code. 
Spelling note: &quot;descendant&quot; is a more correct spelling, but the spelling
       &quot;descendent&quot; is maintained in the code for backwards compatibility reasons"/> 
    </property>   </concept>   <concept>     <code value="is-not-a"/>     <display value="Not (Is A) (by subsumption)"/>     <definition value="The specified property of the code does not have an is-a relationship with the

     provided value."/> 
  </concept>   <concept>     <code value="regex"/>     <display value="Regular Expression"/>     <definition value="The specified property of the code  matches the regex specified in the provided

     value."/> 
  </concept>   <concept>     <code value="in"/>     <display value="In Set"/>     <definition value="The specified property of the code is in the set of codes or concepts specified

     in the provided value (comma-separated list)."/> 
  </concept>   <concept>     <code value="not-in"/>     <display value="Not in Set"/>     <definition value="The specified property of the code is not in the set of codes or concepts specified

     in the provided value (comma-separated list)."/> 
  </concept>   <concept>     <code value="generalizes"/>     <display value="Generalizes (by Subsumption)"/>     <definition value="Includes all concept ids that have a transitive is-a relationship from the concept

     Id provided as the value, including the provided concept itself (i.e. include ancestor
     codes and self)."/> 
    <property>       <code value="comments"/>       <valueString value="The definition of is-a is that all the properties of the value are true for the

       specified property of the code, which means that a code has an is-a relationship
       with itself. To exclude the root code, add it explicitly to as an exclude"/> 
    </property>   </concept>   <concept>     <code value="child-of"/>     <display value="Child Of"/>     <definition value="Only concepts with a direct hierarchical relationship to the index code and no

     other concepts. This does not include the index code in the output."/> 
  </concept>   <concept>     <code value="descendent-leaf"/>     <display value="Descendent Leaf"/>     <definition value="Includes concept ids that have a transitive is-a relationship with the concept

     Id provided as the value, but which do not have any concept ids with transitive
     is-a relationships with themselves."/> 
  </concept>   <concept>     <code value="exists"/>     <display value="Exists"/>     <definition value="The specified property of the code has at least one value (if the specified value

     is true; if the specified value is false, then matches when the specified property
     of the code has no values)."/> 
  </concept> 


</

CodeSystem

>