StructureDefinition for instant

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


  
  
    
    
  
  
    
  
  
    
  
  
  
  
  
  
  
  
    
      
      
    
  
  Base StructureDefinition for instant Type: An instant in time - known at least to the
   second
  
  
  
  
  
  
  
    
      
      
      
      Note: This is intended for where precisely observed times are required, typically system
       logs etc., and not human-reported times - for them, see date and dateTime (which can be
       as precise as instant, but is not required to be) below. Time zone is always required
      
      
      
        
        
        
      
      
        
        
        
        
        
        
      
      
      
    
    
      
      
      
      
      
      
      
        
        
        
      
      
        
          
        
        
      
      
      
    
    
      
      

<StructureDefinition xmlns="http://hl7.org/fhir">
  <id value="instant"/> 
  <text> 
    <status value="generated"/> 
    <div xmlns="http://www.w3.org/1999/xhtml">to do</div> 
  </text> 
  <extension url="http://hl7.org/fhir/StructureDefinition/structuredefinition-standards-status">
    <valueCode value="normative"/> 
  </extension> 
  <extension url="http://hl7.org/fhir/StructureDefinition/structuredefinition-normative-version">
    <valueCode value="4.0.0"/> 
  </extension> 
  <extension url="http://hl7.org/fhir/StructureDefinition/structuredefinition-type-characteristics">
    <valueCode value="has-range"/> 
  </extension> 
  <extension url="http://hl7.org/fhir/StructureDefinition/structuredefinition-type-characteristics">
    <valueCode value="is-continuous"/> 
  </extension> 
  <extension url="http://hl7.org/fhir/StructureDefinition/structuredefinition-type-characteristics">
    <valueCode value="has-length"/> 
  </extension> 
  <extension url="http://hl7.org/fhir/StructureDefinition/structuredefinition-wg">
    <valueCode value="fhir"/> 
  </extension> 
  <url value="http://hl7.org/fhir/StructureDefinition/instant"/> 
  <version value="6.0.0-ballot3"/> 
  <name value="instant"/> 
  <status value="active"/> 
  <experimental value="false"/> 
  <date value="2025-11-08T11:23:29+00:00"/> 
  <publisher value="HL7 International / FHIR Infrastructure"/> 
  <contact> 
    <telecom> 
      <system value="url"/> 
      <value value="http://hl7.org/fhir"/> 
    </telecom> 
  </contact> 
  <contact> 
    <telecom> 
      <system value="url"/> 
      <value value="http://www.hl7.org/Special/committees/fiwg"/> 
    </telecom> 
  </contact> 
  <description value="instant Type: An instant in time - known at least to the second"/> 
  <jurisdiction> 
    <coding> 
      <system value="http://unstats.un.org/unsd/methods/m49/m49.htm"/> 
      <code value="001"/> 
      <display value="World"/> 
    </coding> 
  </jurisdiction> 
  <fhirVersion value="6.0.0-ballot3"/> 
  <kind value="primitive-type"/> 
  <abstract value="false"/> 
  <type value="instant"/> 
  <baseDefinition value="http://hl7.org/fhir/StructureDefinition/PrimitiveType"/> 
  <derivation value="specialization"/> 
  <snapshot> 
    <element id="instant">
      <path value="instant"/> 
      <short value="Primitive Type instant"/> 
      <definition value="An instant in time - known at least to the second"/> 
      <comment value="Note: This is intended for where precisely observed times are required, typically
       system logs etc., and not human-reported times - for them, see date and dateTime
       (which can be as precise as instant, but is not required to be) below. UTC offset
       is always required"/> 
      <min value="0"/>       <max value="*"/>       <base>         <path value="instant"/>         <min value="0"/>         <max value="*"/>       </base>       <constraint>         <key value="ele-1"/>         <severity value="error"/>         <human value="All FHIR elements must have a @value or children or both"/>         <expression value="hasValue() or (children().count() &gt; id.count())"/>         <source value="http://hl7.org/fhir/StructureDefinition/Element"/>       </constraint>       <isModifier value="false"/>       <isSummary value="false"/>     </element>     <element id="instant.id">      <path value="instant.id"/>       <representation value="xmlAttr"/>       <short value="xml:id (or equivalent in JSON)"/>       <definition value="unique id for the element within a resource (for internal references)"/>       <min value="0"/>       <max value="1"/>       <base>         <path value="Element.id"/>         <min value="0"/>         <max value="1"/>       </base>       <type>         <extension url="http://hl7.org/fhir/StructureDefinition/structuredefinition-fhir-type">          <valueUrl value="string"/>         </extension>         <code value="http://hl7.org/fhirpath/System.String"/>       </type>       <isModifier value="false"/>       <isSummary value="false"/>     </element>     <element id="instant.extension">      <path value="instant.extension"/>       <short value="Additional content defined by implementations"/> 
      <definition value="May be used to represent additional information that is not part of the basic definition
       of the resource. To make the use of extensions safe and manageable, there is a strict
       set of governance  applied to the definition and use of extensions. Though any implementer
       can define an extension, there is a set of requirements that SHALL be met as part of the
       definition of the extension.
      There can be no stigma associated with the use of extensions by any application, project,
       or standard - regardless of the institution or jurisdiction that uses or defines the extensions.
        The use of extensions is what allows the FHIR specification to retain a core level of
       simplicity for everyone.
      
      
      
      
      
        
        
        
      
      
        
      
      
        
        
        
        
        
        
      
      
        
        
        
        
        
        
      
      
      
    
    
      
      
      
      
      
      
      
        
        
        
      
    <!--  Note: special primitive values have a FHIRPath system type. e.g. this is compiler magic
       (c)  -->
      
        
          
        
        
          ([0-9]([0-9]([0-9][1-9]|[1-9]0)|[1-9]00)|[1-9]000)-(0[1-9]|1[0-2])-(0[1-9]|[1-2][0-9]|3[0-1])T([01][
          0-9]|2[0-3]):[0-5][0-9]:([0-5][0-9]|60)(\.[0-9]+)?(Z|(\+|-)((0[0-9]|1[0-3]):[0-5][0-9]|14:00))
        
        
      
      
      
    
  
  
    
      
      
      
      Note: This is intended for where precisely observed times are required, typically system
       logs etc., and not human-reported times - for them, see date and dateTime (which can be
       as precise as instant, but is not required to be) below. Time zone is always required
      
      
    
    
      
      
      
      
      
      
    <!--  Note: special primitive values have a FHIRPath system type. e.g. this is compiler magic
       (a)  -->
    <!--  Note: special primitive values have a FHIRPath system type. e.g. this is compiler magic
       (b)  -->
      
        
          
        
        
          ([0-9]([0-9]([0-9][1-9]|[1-9]0)|[1-9]00)|[1-9]000)-(0[1-9]|1[0-2])-(0[1-9]|[1-2][0-9]|3[0-1])T([01][
          0-9]|2[0-3]):[0-5][0-9]:([0-5][0-9]|60)(\.[0-9]+)?(Z|(\+|-)((0[0-9]|1[0-3]):[0-5][0-9]|14:00))
        
        
      
    
  

       of the resource. To make the use of extensions safe and managable, there is a strict
       set of governance applied to the definition and use of extensions. Though any implementer
       can define an extension, there is a set of requirements that SHALL be met as part
       of the definition of the extension."/> 
      <comment value="There can be no stigma associated with the use of extensions by any application,

       project, or standard - regardless of the institution or jurisdiction that uses
       or defines the extensions.  The use of extensions is what allows the FHIR specification
       to retain a core level of simplicity for everyone."/> 
      <alias value="extensions"/>       <alias value="user content"/>       <min value="0"/>       <max value="*"/>       <base>         <path value="Element.extension"/>         <min value="0"/>         <max value="*"/>       </base>       <type>         <code value="Extension"/>       </type>       <constraint>         <key value="ele-1"/>         <severity value="error"/>         <human value="All FHIR elements must have a @value or children"/>         <expression value="hasValue() or (children().count() &gt; id.count())"/>         <source value="http://hl7.org/fhir/StructureDefinition/Element"/>       </constraint>       <constraint>         <key value="ext-1"/>         <severity value="error"/>         <human value="Must have either extensions or value[x], not both"/>         <expression value="extension.exists() != value.exists()"/>         <source value="http://hl7.org/fhir/StructureDefinition/Extension"/>       </constraint>       <isModifier value="false"/>       <isSummary value="false"/>     </element>     <element id="instant.value">      <path value="instant.value"/>       <representation value="xmlAttr"/>       <short value="Primitive value for instant"/>       <definition value="The actual value"/>       <min value="0"/>       <max value="1"/>       <base>         <path value="instant.value"/>         <min value="0"/>         <max value="1"/>       </base>       <!--  Note: special primitive values have a FHIRPath system type. e.g. this is compiler

       magic (c)  -->
      <type>         <extension url="http://hl7.org/fhir/StructureDefinition/structuredefinition-fhir-type">          <valueUrl value="instant"/>         </extension>         <extension url="http://hl7.org/fhir/StructureDefinition/regex">          <valueString value="([0-9]([0-9]([0-9][1-9]|[1-9]0)|[1-9]00)|[1-9]000)-(0[1-9]|1[0-2])-(0[1-9]|[1-2][0-9]|3[0-1])

          T([01][0-9]|2[0-3]):[0-5][0-9]:([0-5][0-9]|60)(\.[0-9]{1,9})?(Z|(\+|-)((0[0-9]|1[0-3]):[0-5][0
          -9]|14:00))"/> 
        </extension>         <code value="http://hl7.org/fhirpath/System.DateTime"/>       </type>       <isModifier value="false"/>       <isSummary value="false"/>     </element>   </snapshot>   <differential>     <element id="instant">      <path value="instant"/>       <short value="Primitive Type instant"/>       <definition value="An instant in time - known at least to the second"/>       <comment value="Note: This is intended for where precisely observed times are required, typically

       system logs etc., and not human-reported times - for them, see date and dateTime
       (which can be as precise as instant, but is not required to be) below. UTC offset
       is always required"/> 
      <min value="0"/>       <max value="*"/>     </element>     <element id="instant.value">      <path value="instant.value"/>       <representation value="xmlAttr"/>       <short value="Primitive value for instant"/>       <definition value="Primitive value for instant"/>       <min value="0"/>       <max value="1"/>       <!--  Note: special primitive values have a FHIRPath system type. e.g. this is compiler

       magic (a)  -->
      <!--  Note: special primitive values have a FHIRPath system type. e.g. this is compiler

       magic (b)  -->
      <type>         <extension url="http://hl7.org/fhir/StructureDefinition/structuredefinition-fhir-type">          <valueUrl value="instant"/>         </extension>         <extension url="http://hl7.org/fhir/StructureDefinition/regex">          <valueString value="([0-9]([0-9]([0-9][1-9]|[1-9]0)|[1-9]00)|[1-9]000)-(0[1-9]|1[0-2])-(0[1-9]|[1-2][0-9]|3[0-1])

          T([01][0-9]|2[0-3]):[0-5][0-9]:([0-5][0-9]|60)(\.[0-9]{1,9})?(Z|(\+|-)((0[0-9]|1[0-3]):[0-5][0
          -9]|14:00))"/> 
        </extension>         <code value="http://hl7.org/fhirpath/System.DateTime"/>       </type>     </element>   </differential> 


</

StructureDefinition

>