IVL_PQ: Interval (V3 Data Type) - XML Representation - Clinical Document Architecture v2.0.1-sd

This page is part of the CDA: Clinical Document Architecture (v2.0.1-sd: CDA 2.0 - Informative) generated with FHIR (HL7® FHIR® Standard) v5.0.0. This is the current published version. For a full list of available versions, see the Directory of published versions
Logical Model: IVL_PQ - XML Profile

Active as of 2024-12-18
XML representation of the IVL-PQ logical model.
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<StructureDefinition xmlns="http://hl7.org/fhir">
  <id value="IVL-PQ"/>
  <text>
    <status value="extensions"/>
    <div xmlns="http://www.w3.org/1999/xhtml"><p class="res-header-id"><b>Generated Narrative: StructureDefinition IVL-PQ</b></p><a name="IVL-PQ"> </a><a name="hcIVL-PQ"> </a><a name="IVL-PQ-en-US"> </a><table border="0" cellpadding="0" cellspacing="0" style="border: 0px #F0F0F0 solid; font-size: 11px; font-family: verdana; vertical-align: top;"><tr style="border: 1px #F0F0F0 solid; font-size: 11px; font-family: verdana; vertical-align: top"><th style="vertical-align: top; text-align : left; background-color: white; border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px" class="hierarchy"><a href="https://build.fhir.org/ig/FHIR/ig-guidance/readingIgs.html#table-views" title="The logical name of the element">Name</a></th><th style="vertical-align: top; text-align : left; background-color: white; border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px" class="hierarchy"><a href="https://build.fhir.org/ig/FHIR/ig-guidance/readingIgs.html#table-views" title="Information about the use of the element">Flags</a></th><th style="vertical-align: top; text-align : left; background-color: white; border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px" class="hierarchy"><a href="https://build.fhir.org/ig/FHIR/ig-guidance/readingIgs.html#table-views" title="Minimum and Maximum # of times the element can appear in the instance">Card.</a></th><th style="width: 100px" class="hierarchy"><a href="https://build.fhir.org/ig/FHIR/ig-guidance/readingIgs.html#table-views" title="Reference to the type of the element">Type</a></th><th style="vertical-align: top; text-align : left; background-color: white; border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px" class="hierarchy"><a href="https://build.fhir.org/ig/FHIR/ig-guidance/readingIgs.html#table-views" title="Additional information about the element">Description &amp; Constraints</a><span style="float: right"><a href="https://build.fhir.org/ig/FHIR/ig-guidance/readingIgs.html#table-views" title="Legend for this format"><img src="data:image/png;base64,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" alt="doco" style="background-color: inherit"/></a></span></th></tr><tr style="border: 0px #F0F0F0 solid; padding:0px; vertical-align: top; background-color: white"><td style="vertical-align: top; text-align : left; background-color: white; border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px; white-space: nowrap; background-image: url(tbl_bck1.png)" class="hierarchy"><img src="tbl_spacer.png" alt="." style="background-color: inherit" class="hierarchy"/><img src="icon_element.gif" alt="." style="background-color: white; background-color: inherit" title="Element" class="hierarchy"/> <a href="StructureDefinition-IVL-PQ-definitions.html#IVL_PQ">IVL_PQ</a><a name="IVL_PQ"> </a></td><td style="vertical-align: top; text-align : left; background-color: white; border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px" class="hierarchy"><a style="padding-left: 3px; padding-right: 3px; border: 1px maroon solid; font-weight: bold; color: #301212; background-color: #fdf4f4;" href="http://hl7.org/fhir/R5/conformance-rules.html#constraints" title="This element has or is affected by constraints ( ivl-pq-center )">C</a></td><td style="vertical-align: top; text-align : left; background-color: white; border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px" class="hierarchy">1..*</td><td style="vertical-align: top; text-align : left; background-color: white; border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px" class="hierarchy"><a href="StructureDefinition-PQ.html">PQ</a></td><td style="vertical-align: top; text-align : left; background-color: white; border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px" class="hierarchy"><span style="font-weight:bold">XML Namespace: </span>urn:hl7-org:v3<br/>Elements defined in Ancestors:<a href="StructureDefinition-ANY.html" title="If a value is an exceptional value (NULL-value), this specifies in what way and why proper information is missing.">@nullFlavor</a>, <a href="StructureDefinition-PQ.html" title="The unit of measure specified in the Unified Code for Units of Measure (UCUM) [].">@unit</a>, <a href="StructureDefinition-PQ.html" title="The magnitude of the quantity measured in terms of the unit.">@value</a>, <a href="StructureDefinition-PQ.html" title="An alternative representation of the same physical quantity expressed in a different unit, of a different unit code system and possibly with a different value.">translation</a><br/><span style="opacity: 0.5">Base for all types and resources</span><br/><span style="font-weight:bold">Binding: </span>This type can be bound to a value set using the CDA binding style<br/><span style="font-weight:bold" title="The root class that contains instances of this class">Logical Container: </span><a href="StructureDefinition-ClinicalDocument.html">ClinicalDocument (CDA Class)</a><br/><span style="font-weight:bold">ivl-pq-center: </span>Center cannot co-exist with low or high<br/></td></tr>
<tr style="border: 0px #F0F0F0 solid; padding:0px; vertical-align: top; background-color: #F7F7F7"><td style="vertical-align: top; text-align : left; background-color: #F7F7F7; border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px; white-space: nowrap; background-image: url(tbl_bck10.png)" class="hierarchy"><img src="tbl_spacer.png" alt="." style="background-color: inherit" class="hierarchy"/><img src="tbl_vjoin.png" alt="." style="background-color: inherit" class="hierarchy"/><img src="icon_primitive.png" alt="." style="background-color: #F7F7F7; background-color: inherit" title="Primitive Data Type" class="hierarchy"/> <a href="StructureDefinition-IVL-PQ-definitions.html#IVL_PQ.operator" title="A code specifying whether the set component is included (union) or excluded (set-difference) from the set, or other set operations with the current set component and the set as constructed from the representation stream up to the current point.">@operator</a><a name="IVL_PQ.operator"> </a></td><td style="vertical-align: top; text-align : left; background-color: #F7F7F7; border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px" class="hierarchy"/><td style="vertical-align: top; text-align : left; background-color: #F7F7F7; border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px" class="hierarchy">0..1</td><td style="vertical-align: top; text-align : left; background-color: #F7F7F7; border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px" class="hierarchy"><a href="StructureDefinition-cs-simple.html" title="code">cs</a></td><td style="vertical-align: top; text-align : left; background-color: #F7F7F7; border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px" class="hierarchy"><span style="font-weight:bold">Binding: </span><a href="ValueSet-CDASetOperator.html" title="http://hl7.org/cda/stds/core/ValueSet/CDASetOperator">CDASetOperator</a> (<a href="http://hl7.org/fhir/R5/terminologies.html#required" title="To be conformant, the concept in this element SHALL be from the specified value set.">required</a>)</td></tr>
<tr style="border: 0px #F0F0F0 solid; padding:0px; vertical-align: top; background-color: white"><td style="vertical-align: top; text-align : left; background-color: white; border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px; white-space: nowrap; background-image: url(tbl_bck10.png)" class="hierarchy"><img src="tbl_spacer.png" alt="." style="background-color: inherit" class="hierarchy"/><img src="tbl_vjoin.png" alt="." style="background-color: inherit" class="hierarchy"/><img src="icon_resource.png" alt="." style="background-color: white; background-color: inherit" title="Resource" class="hierarchy"/> <a href="StructureDefinition-IVL-PQ-definitions.html#IVL_PQ.low" title="This is the low limit of the interval.">low</a><a name="IVL_PQ.low"> </a></td><td style="vertical-align: top; text-align : left; background-color: white; border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px" class="hierarchy"/><td style="vertical-align: top; text-align : left; background-color: white; border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px" class="hierarchy">0..1</td><td style="vertical-align: top; text-align : left; background-color: white; border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px" class="hierarchy"><a href="StructureDefinition-IVXB-PQ.html">IVXB_PQ</a></td><td style="vertical-align: top; text-align : left; background-color: white; border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px" class="hierarchy"/></tr>
<tr style="border: 0px #F0F0F0 solid; padding:0px; vertical-align: top; background-color: #F7F7F7"><td style="vertical-align: top; text-align : left; background-color: #F7F7F7; border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px; white-space: nowrap; background-image: url(tbl_bck10.png)" class="hierarchy"><img src="tbl_spacer.png" alt="." style="background-color: inherit" class="hierarchy"/><img src="tbl_vjoin.png" alt="." style="background-color: inherit" class="hierarchy"/><img src="icon_resource.png" alt="." style="background-color: #F7F7F7; background-color: inherit" title="Resource" class="hierarchy"/> <a href="StructureDefinition-IVL-PQ-definitions.html#IVL_PQ.center" title="The arithmetic mean of the interval (low plus high divided by 2). The purpose of distinguishing the center as a semantic property is for conversions of intervals from and to point values.">center</a><a name="IVL_PQ.center"> </a></td><td style="vertical-align: top; text-align : left; background-color: #F7F7F7; border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px" class="hierarchy"/><td style="vertical-align: top; text-align : left; background-color: #F7F7F7; border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px" class="hierarchy">0..1</td><td style="vertical-align: top; text-align : left; background-color: #F7F7F7; border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px" class="hierarchy"><a href="StructureDefinition-PQ.html">PQ</a></td><td style="vertical-align: top; text-align : left; background-color: #F7F7F7; border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px" class="hierarchy"/></tr>
<tr style="border: 0px #F0F0F0 solid; padding:0px; vertical-align: top; background-color: white"><td style="vertical-align: top; text-align : left; background-color: white; border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px; white-space: nowrap; background-image: url(tbl_bck10.png)" class="hierarchy"><img src="tbl_spacer.png" alt="." style="background-color: inherit" class="hierarchy"/><img src="tbl_vjoin.png" alt="." style="background-color: inherit" class="hierarchy"/><img src="icon_resource.png" alt="." style="background-color: white; background-color: inherit" title="Resource" class="hierarchy"/> <a href="StructureDefinition-IVL-PQ-definitions.html#IVL_PQ.width" title="The difference between high and low boundary. The purpose of distinguishing a width property is to handle all cases of incomplete information symmetrically. In any interval representation only two of the three properties high, low, and width need to be stated and the third can be derived.">width</a><a name="IVL_PQ.width"> </a></td><td style="vertical-align: top; text-align : left; background-color: white; border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px" class="hierarchy"/><td style="vertical-align: top; text-align : left; background-color: white; border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px" class="hierarchy">0..1</td><td style="vertical-align: top; text-align : left; background-color: white; border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px" class="hierarchy"><a href="StructureDefinition-PQ.html">PQ</a></td><td style="vertical-align: top; text-align : left; background-color: white; border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px" class="hierarchy"/></tr>
<tr style="border: 0px #F0F0F0 solid; padding:0px; vertical-align: top; background-color: #F7F7F7"><td style="vertical-align: top; text-align : left; background-color: #F7F7F7; border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px; white-space: nowrap; background-image: url(tbl_bck00.png)" class="hierarchy"><img src="tbl_spacer.png" alt="." style="background-color: inherit" class="hierarchy"/><img src="tbl_vjoin_end.png" alt="." style="background-color: inherit" class="hierarchy"/><img src="icon_resource.png" alt="." style="background-color: #F7F7F7; background-color: inherit" title="Resource" class="hierarchy"/> <a href="StructureDefinition-IVL-PQ-definitions.html#IVL_PQ.high" title="This is the high limit of the interval.">high</a><a name="IVL_PQ.high"> </a></td><td style="vertical-align: top; text-align : left; background-color: #F7F7F7; border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px" class="hierarchy"/><td style="vertical-align: top; text-align : left; background-color: #F7F7F7; border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px" class="hierarchy">0..1</td><td style="vertical-align: top; text-align : left; background-color: #F7F7F7; border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px" class="hierarchy"><a href="StructureDefinition-IVXB-PQ.html">IVXB_PQ</a></td><td style="vertical-align: top; text-align : left; background-color: #F7F7F7; border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px" class="hierarchy"/></tr>
<tr><td colspan="5" class="hierarchy"><br/><a href="https://build.fhir.org/ig/FHIR/ig-guidance/readingIgs.html#table-views" title="Legend for this format"><img src="data:image/png;base64,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" alt="doco" style="background-color: inherit"/> Documentation for this format</a></td></tr></table></div>
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    <valueCode value="CDA"/>
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  <url value="http://hl7.org/cda/stds/core/StructureDefinition/IVL-PQ"/>
  <version value="2.0.1-sd"/>
  <name value="IVL_PQ"/>
  <title value="IVL_PQ: Interval (V3 Data Type)"/>
  <status value="active"/>
  <experimental value="false"/>
  <date value="2024-12-18T12:06:10+11:00"/>
  <publisher value="Health Level 7"/>
  <contact>
    <name value="HL7 International - Structured Documents"/>
    <telecom>
      <system value="url"/>
      <value value="http://www.hl7.org/Special/committees/structure"/>
    </telecom>
    <telecom>
      <system value="email"/>
      <value value="structdog@lists.HL7.org"/>
    </telecom>
  </contact>
  <description
               value="A set of consecutive values of an ordered base data type."/>
  <fhirVersion value="5.0.0"/>
  <mapping>
    <identity value="rim"/>
    <uri value="http://hl7.org/v3"/>
    <name value="RIM Mapping"/>
  </mapping>
  <kind value="logical"/>
  <abstract value="false"/>
  <type value="http://hl7.org/cda/stds/core/StructureDefinition/IVL_PQ"/>
  <baseDefinition
                  value="http://hl7.org/cda/stds/core/StructureDefinition/PQ"/>
  <derivation value="specialization"/>
  <snapshot>
    <element id="IVL_PQ">
      <path value="IVL_PQ"/>
      <short value="Base for all types and resources"/>
      <definition
                  value="A dimensioned quantity expressing the result of a measurement act."/>
      <min value="1"/>
      <max value="*"/>
      <base>
        <path value="Base"/>
        <min value="0"/>
        <max value="*"/>
      </base>
      <constraint>
        <key value="ivl-pq-center"/>
        <severity value="error"/>
        <human value="Center cannot co-exist with low or high"/>
        <expression value="center.empty() or (low.empty() and high.empty())"/>
      </constraint>
      <isModifier value="false"/>
      <mapping>
        <identity value="rim"/>
        <map value="n/a"/>
      </mapping>
    </element>
    <element id="IVL_PQ.nullFlavor">
      <path value="IVL_PQ.nullFlavor"/>
      <representation value="xmlAttr"/>
      <label value="Exceptional Value Detail"/>
      <definition
                  value="If a value is an exceptional value (NULL-value), this specifies in what way and why proper information is missing."/>
      <min value="0"/>
      <max value="1"/>
      <base>
        <path value="ANY.nullFlavor"/>
        <min value="0"/>
        <max value="1"/>
      </base>
      <type>
        <code value="code"/>
        <profile
                 value="http://hl7.org/cda/stds/core/StructureDefinition/cs-simple"/>
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      <binding>
        <strength value="required"/>
        <valueSet
                  value="http://hl7.org/cda/stds/core/ValueSet/CDANullFlavor"/>
      </binding>
    </element>
    <element id="IVL_PQ.unit">
      <path value="IVL_PQ.unit"/>
      <representation value="xmlAttr"/>
      <label value="Unit of Measure"/>
      <definition
                  value="The unit of measure specified in the Unified Code for Units of Measure (UCUM) []."/>
      <min value="0"/>
      <max value="1"/>
      <base>
        <path value="PQ.unit"/>
        <min value="0"/>
        <max value="1"/>
      </base>
      <type>
        <code value="code"/>
        <profile
                 value="http://hl7.org/cda/stds/core/StructureDefinition/cs-simple"/>
      </type>
      <defaultValueCode value="1"/>
    </element>
    <element id="IVL_PQ.value">
      <path value="IVL_PQ.value"/>
      <representation value="xmlAttr"/>
      <label value="Maginitude Value"/>
      <definition
                  value="The magnitude of the quantity measured in terms of the unit."/>
      <min value="0"/>
      <max value="1"/>
      <base>
        <path value="PQ.value"/>
        <min value="0"/>
        <max value="1"/>
      </base>
      <type>
        <code value="decimal"/>
        <profile
                 value="http://hl7.org/cda/stds/core/StructureDefinition/real-simple"/>
      </type>
    </element>
    <element id="IVL_PQ.translation">
      <path value="IVL_PQ.translation"/>
      <label value="Translation"/>
      <definition
                  value="An alternative representation of the same physical quantity expressed in a different unit, of a different unit code system and possibly with a different value."/>
      <min value="0"/>
      <max value="*"/>
      <base>
        <path value="PQ.translation"/>
        <min value="0"/>
        <max value="*"/>
      </base>
      <type>
        <code value="http://hl7.org/cda/stds/core/StructureDefinition/PQR"/>
      </type>
    </element>
    <element id="IVL_PQ.operator">
      <path value="IVL_PQ.operator"/>
      <representation value="xmlAttr"/>
      <definition
                  value="A code specifying whether the set component is included (union) or excluded (set-difference) from the set, or other set operations with the current set component and the set as constructed from the representation stream up to the current point."/>
      <min value="0"/>
      <max value="1"/>
      <base>
        <path value="IVL_PQ.operator"/>
        <min value="0"/>
        <max value="1"/>
      </base>
      <type>
        <code value="code"/>
        <profile
                 value="http://hl7.org/cda/stds/core/StructureDefinition/cs-simple"/>
      </type>
      <defaultValueCode value="I"/>
      <binding>
        <strength value="required"/>
        <valueSet
                  value="http://hl7.org/cda/stds/core/ValueSet/CDASetOperator"/>
      </binding>
    </element>
    <element id="IVL_PQ.low">
      <path value="IVL_PQ.low"/>
      <label value="Low Boundary"/>
      <definition value="This is the low limit of the interval."/>
      <min value="0"/>
      <max value="1"/>
      <base>
        <path value="IVL_PQ.low"/>
        <min value="0"/>
        <max value="1"/>
      </base>
      <type>
        <code
              value="http://hl7.org/cda/stds/core/StructureDefinition/IVXB-PQ"/>
      </type>
    </element>
    <element id="IVL_PQ.center">
      <path value="IVL_PQ.center"/>
      <label value="Central Value"/>
      <definition
                  value="The arithmetic mean of the interval (low plus high divided by 2). The purpose of distinguishing the center as a semantic property is for conversions of intervals from and to point values."/>
      <min value="0"/>
      <max value="1"/>
      <base>
        <path value="IVL_PQ.center"/>
        <min value="0"/>
        <max value="1"/>
      </base>
      <type>
        <code value="http://hl7.org/cda/stds/core/StructureDefinition/PQ"/>
      </type>
    </element>
    <element id="IVL_PQ.width">
      <path value="IVL_PQ.width"/>
      <label value="Width"/>
      <definition
                  value="The difference between high and low boundary. The purpose of distinguishing a width property is to handle all cases of incomplete information symmetrically. In any interval representation only two of the three properties high, low, and width need to be stated and the third can be derived."/>
      <min value="0"/>
      <max value="1"/>
      <base>
        <path value="IVL_PQ.width"/>
        <min value="0"/>
        <max value="1"/>
      </base>
      <type>
        <code value="http://hl7.org/cda/stds/core/StructureDefinition/PQ"/>
      </type>
    </element>
    <element id="IVL_PQ.high">
      <path value="IVL_PQ.high"/>
      <label value="High Boundary"/>
      <definition value="This is the high limit of the interval."/>
      <min value="0"/>
      <max value="1"/>
      <base>
        <path value="IVL_PQ.high"/>
        <min value="0"/>
        <max value="1"/>
      </base>
      <type>
        <code
              value="http://hl7.org/cda/stds/core/StructureDefinition/IVXB-PQ"/>
      </type>
    </element>
  </snapshot>
  <differential>
    <element id="IVL_PQ">
      <path value="IVL_PQ"/>
      <min value="1"/>
      <max value="*"/>
      <constraint>
        <key value="ivl-pq-center"/>
        <severity value="error"/>
        <human value="Center cannot co-exist with low or high"/>
        <expression value="center.empty() or (low.empty() and high.empty())"/>
      </constraint>
    </element>
    <element id="IVL_PQ.operator">
      <path value="IVL_PQ.operator"/>
      <representation value="xmlAttr"/>
      <definition
                  value="A code specifying whether the set component is included (union) or excluded (set-difference) from the set, or other set operations with the current set component and the set as constructed from the representation stream up to the current point."/>
      <min value="0"/>
      <max value="1"/>
      <type>
        <code value="code"/>
        <profile
                 value="http://hl7.org/cda/stds/core/StructureDefinition/cs-simple"/>
      </type>
      <defaultValueCode value="I"/>
      <binding>
        <strength value="required"/>
        <valueSet
                  value="http://hl7.org/cda/stds/core/ValueSet/CDASetOperator"/>
      </binding>
    </element>
    <element id="IVL_PQ.low">
      <path value="IVL_PQ.low"/>
      <label value="Low Boundary"/>
      <definition value="This is the low limit of the interval."/>
      <min value="0"/>
      <max value="1"/>
      <type>
        <code
              value="http://hl7.org/cda/stds/core/StructureDefinition/IVXB-PQ"/>
      </type>
    </element>
    <element id="IVL_PQ.center">
      <path value="IVL_PQ.center"/>
      <label value="Central Value"/>
      <definition
                  value="The arithmetic mean of the interval (low plus high divided by 2). The purpose of distinguishing the center as a semantic property is for conversions of intervals from and to point values."/>
      <min value="0"/>
      <max value="1"/>
      <type>
        <code value="http://hl7.org/cda/stds/core/StructureDefinition/PQ"/>
      </type>
    </element>
    <element id="IVL_PQ.width">
      <path value="IVL_PQ.width"/>
      <label value="Width"/>
      <definition
                  value="The difference between high and low boundary. The purpose of distinguishing a width property is to handle all cases of incomplete information symmetrically. In any interval representation only two of the three properties high, low, and width need to be stated and the third can be derived."/>
      <min value="0"/>
      <max value="1"/>
      <type>
        <code value="http://hl7.org/cda/stds/core/StructureDefinition/PQ"/>
      </type>
    </element>
    <element id="IVL_PQ.high">
      <path value="IVL_PQ.high"/>
      <label value="High Boundary"/>
      <definition value="This is the high limit of the interval."/>
      <min value="0"/>
      <max value="1"/>
      <type>
        <code
              value="http://hl7.org/cda/stds/core/StructureDefinition/IVXB-PQ"/>
      </type>
    </element>
  </differential>
</StructureDefinition>