HL7 FHIR Implementation Guide: minimal Common Oncology Data Elements (mCODE) Release 1 - US Realm

HL7 FHIR Implementation Guide: minimal Common Oncology Data Elements (mCODE) Release 1 - US Realm | STU Ballot 1
This page is part of the HL7 FHIR Implementation Guide: minimal Common Oncology Data Elements (mCODE) Release 1 - US Realm | STU1 (v0.9.1: STU 1 Ballot 1) based on FHIR R4. The current version which supercedes this version is 2.0.0. For a full list of available versions, see the Directory of published versions
OccurrenceTimeOrPeriod


<StructureDefinition xmlns="http://hl7.org/fhir">
  <id value="obf-datatype-OccurrenceTimeOrPeriod-extension"/>
  <text>
    <status value="generated"/>
    <div xmlns="http://www.w3.org/1999/xhtml">
  <p><b>OccurrenceTimeOrPeriod Extension</b></p>
  <p>The point or period of time when the event takes place. Times can be precise (dateTime) or approximate (date). If a time period is used, and the start date or dateTime is missing, the start of the period is not known. If the end date or dateTime is missing, it means that the period is ongoing.</p>
</div>
  </text>
  <url
       value="http://hl7.org/fhir/us/mcode/StructureDefinition/obf-datatype-OccurrenceTimeOrPeriod-extension"/>
  <version value="0.9.1"/>
  <name value="OccurrenceTimeOrPeriod"/>
  <title value="obf-datatype-OccurrenceTimeOrPeriod"/>
  <status value="draft"/>
  <date value="2019-08-01T00:00:00-04:00"/>
  <publisher value="HL7 International Clinical Interoperability Council"/>
  <contact>
    <telecom>
      <system value="url"/>
      <value value="http://www.hl7.org/Special/committees/cic"/>
    </telecom>
  </contact>
  <description
               value="The point or period of time when the event takes place. Times can be precise (dateTime) or approximate (date). If a time period is used, and the start date or dateTime is missing, the start of the period is not known. If the end date or dateTime is missing, it means that the period is ongoing."/>
  <fhirVersion value="4.0.0"/>
  <kind value="complex-type"/>
  <abstract value="false"/>
  <context>
    <type value="element"/>
    <expression value="*"/>
  </context>
  <type value="Extension"/>
  <baseDefinition value="http://hl7.org/fhir/StructureDefinition/Extension"/>
  <derivation value="constraint"/>
  <snapshot>
    <element id="Extension">
      <path value="Extension"/>
      <short value="OccurrenceTimeOrPeriod"/>
      <definition
                  value="The point or period of time when the event takes place. Times can be precise (dateTime) or approximate (date). If a time period is used, and the start date or dateTime is missing, the start of the period is not known. If the end date or dateTime is missing, it means that the period is ongoing."/>
      <min value="0"/>
      <max value="*"/>
      <base>
        <path value="Extension"/>
        <min value="0"/>
        <max value="*"/>
      </base>
      <condition value="ele-1"/>
      <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())"/>
        <xpath value="@value|f:*|h:div"/>
        <source value="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()"/>
        <xpath
               value="exists(f:extension)!=exists(f:*[starts-with(local-name(.), &#39;value&#39;)])"/>
      </constraint>
      <isModifier value="false"/>
      <mapping>
        <identity value="rim"/>
        <map value="n/a"/>
      </mapping>
      <mapping>
        <identity value="rim"/>
        <map value="N/A"/>
      </mapping>
    </element>
    <element id="Extension.id">
      <path value="Extension.id"/>
      <representation value="xmlAttr"/>
      <short value="Unique id for inter-element referencing"/>
      <definition
                  value="Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces."/>
      <min value="0"/>
      <max value="1"/>
      <base>
        <path value="Element.id"/>
        <min value="0"/>
        <max value="1"/>
      </base>
      <type>
        <code value="string"/>
      </type>
      <isModifier value="false"/>
      <isSummary value="false"/>
      <mapping>
        <identity value="rim"/>
        <map value="n/a"/>
      </mapping>
    </element>
    <element id="Extension.extension">
      <path value="Extension.extension"/>
      <slicing>
        <discriminator>
          <type value="value"/>
          <path value="url"/>
        </discriminator>
        <description value="Extensions are always sliced by (at least) url"/>
        <rules value="open"/>
      </slicing>
      <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 element. 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."/>
      <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="0"/>
      <base>
        <path value="Element.extension"/>
        <min value="0"/>
        <max value="*"/>
      </base>
      <type>
        <code value="Extension"/>
      </type>
      <isModifier value="false"/>
      <isSummary value="false"/>
      <mapping>
        <identity value="rim"/>
        <map value="n/a"/>
      </mapping>
    </element>
    <element id="Extension.url">
      <path value="Extension.url"/>
      <representation value="xmlAttr"/>
      <short value="identifies the meaning of the extension"/>
      <definition
                  value="Source of the definition for the extension code - a logical name or a URL."/>
      <comment
               value="The definition may point directly to a computable or human-readable definition of the extensibility codes, or it may be a logical URI as declared in some other specification. The definition SHALL be a URI for the Structure Definition defining the extension."/>
      <min value="1"/>
      <max value="1"/>
      <base>
        <path value="Extension.url"/>
        <min value="1"/>
        <max value="1"/>
      </base>
      <type>
        <code value="uri"/>
      </type>
      <fixedUri
                value="http://hl7.org/fhir/us/mcode/StructureDefinition/obf-datatype-OccurrenceTimeOrPeriod-extension"/>
      <isModifier value="false"/>
      <isSummary value="false"/>
      <mapping>
        <identity value="rim"/>
        <map value="N/A"/>
      </mapping>
    </element>
    <element id="Extension.value[x]">
      <path value="Extension.value[x]"/>
      <short value="Value of extension"/>
      <definition
                  value="Value of extension - must be one of a constrained set of the data types (see [Extensibility](extensibility.html) for a list)."/>
      <min value="1"/>
      <max value="1"/>
      <base>
        <path value="Extension.value[x]"/>
        <min value="0"/>
        <max value="1"/>
      </base>
      <type>
        <code value="date"/>
      </type>
      <type>
        <code value="dateTime"/>
      </type>
      <type>
        <code value="Period"/>
      </type>
      <isModifier value="false"/>
      <isSummary value="false"/>
      <mapping>
        <identity value="rim"/>
        <map value="N/A"/>
      </mapping>
    </element>
  </snapshot>
  <differential>
    <element id="Extension">
      <path value="Extension"/>
      <short value="OccurrenceTimeOrPeriod"/>
      <definition
                  value="The point or period of time when the event takes place. Times can be precise (dateTime) or approximate (date). If a time period is used, and the start date or dateTime is missing, the start of the period is not known. If the end date or dateTime is missing, it means that the period is ongoing."/>
      <min value="0"/>
      <max value="*"/>
    </element>
    <element id="Extension.extension">
      <path value="Extension.extension"/>
      <min value="0"/>
      <max value="0"/>
    </element>
    <element id="Extension.url">
      <path value="Extension.url"/>
      <type>
        <code value="uri"/>
      </type>
      <fixedUri
                value="http://hl7.org/fhir/us/mcode/StructureDefinition/obf-datatype-OccurrenceTimeOrPeriod-extension"/>
    </element>
    <element id="Extension.value[x]">
      <path value="Extension.value[x]"/>
      <min value="1"/>
      <type>
        <code value="date"/>
      </type>
      <type>
        <code value="dateTime"/>
      </type>
      <type>
        <code value="Period"/>
      </type>
    </element>
  </differential>
</StructureDefinition>