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

<StructureDefinition xmlns="http://hl7.org/fhir">
  <id value="profile-NamingSystem"/>
  <text>
    <status value="extensions"/><div xmlns="http://www.w3.org/1999/xhtml"><p class="res-header-id"><b>Generated Narrative: StructureDefinition profile-NamingSystem</b></p><a name="profile-NamingSystem"> </a><a name="hcprofile-NamingSystem"> </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 : var(--ig-left,left); background-color: white; border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px; padding-top: 3px; padding-bottom: 3px" 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 : var(--ig-left,left); background-color: white; border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px; padding-top: 3px; padding-bottom: 3px" 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 : var(--ig-left,left); background-color: white; border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px; padding-top: 3px; padding-bottom: 3px" 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="vertical-align: top; text-align : var(--ig-left,left); background-color: white; border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px; padding-top: 3px; padding-bottom: 3px; 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 : var(--ig-left,left); background-color: white; border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px; padding-top: 3px; padding-bottom: 3px" 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 : var(--ig-left,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_resource.png" alt="." style="background-color: white; background-color: inherit" title="Resource" class="hierarchy"/> <a href="StructureDefinition-profile-NamingSystem-definitions.html#NamingSystem">NamingSystem</a><a name="NamingSystem"> </a></td><td style="vertical-align: top; text-align : var(--ig-left,left); background-color: white; border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px" class="hierarchy"/><td style="vertical-align: top; text-align : var(--ig-left,left); background-color: white; border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px" class="hierarchy"><span style="opacity: 0.5">0</span><span style="opacity: 0.5">..</span><span style="opacity: 0.5">*</span></td><td style="vertical-align: top; text-align : var(--ig-left,left); background-color: white; border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px" class="hierarchy"><a href="http://hl7.org/fhir/R5/namingsystem.html">NamingSystem(5.0.0)</a></td><td style="vertical-align: top; text-align : var(--ig-left,left); background-color: white; border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px" class="hierarchy"><span style="opacity: 0.5">System of unique identification</span></td></tr>
<tr style="border: 0px #F0F0F0 solid; padding:0px; vertical-align: top; background-color: #F7F7F7"><td style="vertical-align: top; text-align : var(--ig-left,left); background-color: #F7F7F7; border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px; white-space: nowrap; background-image: url(tbl_bck11.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_element.gif" alt="." style="background-color: #F7F7F7; background-color: inherit" title="Element" class="hierarchy"/> <a href="StructureDefinition-profile-NamingSystem-definitions.html#NamingSystem.meta">meta</a><a name="NamingSystem.meta"> </a></td><td style="vertical-align: top; text-align : var(--ig-left,left); background-color: #F7F7F7; border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px" class="hierarchy"/><td style="vertical-align: top; text-align : var(--ig-left,left); background-color: #F7F7F7; border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px" class="hierarchy"/><td style="vertical-align: top; text-align : var(--ig-left,left); background-color: #F7F7F7; border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px" class="hierarchy"/><td style="vertical-align: top; text-align : var(--ig-left,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 : var(--ig-left,left); background-color: white; border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px; white-space: nowrap; background-image: url(tbl_bck103.png)" class="hierarchy"><img src="tbl_spacer.png" alt="." style="background-color: inherit" class="hierarchy"/><img src="tbl_vline.png" alt="." style="background-color: inherit" class="hierarchy"/><img src="tbl_vjoin_end.png" alt="." style="background-color: inherit" class="hierarchy"/><img src="icon_extension_simple.png" alt="." style="background-color: white; background-color: inherit" title="Simple Extension" class="hierarchy"/> <a href="StructureDefinition-profile-NamingSystem-definitions.html#NamingSystem.meta.extension">Slices for extension</a><a name="NamingSystem.meta.extension"> </a></td><td style="vertical-align: top; text-align : var(--ig-left,left); background-color: white; border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px" class="hierarchy"/><td style="vertical-align: top; text-align : var(--ig-left,left); background-color: white; border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px" class="hierarchy">0..*</td><td style="vertical-align: top; text-align : var(--ig-left,left); background-color: white; border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px" class="hierarchy"><a style="opacity: 0.5; opacity: 0.5" href="http://hl7.org/fhir/R5/extensibility.html#Extension">Extension</a></td><td style="vertical-align: top; text-align : var(--ig-left,left); background-color: white; border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px" class="hierarchy"><span style="opacity: 0.5">Extension</span><br/><span style="font-weight:bold">Slice: </span>Unordered, Open by value:url<br/></td></tr>
<tr style="border: 0px #F0F0F0 solid; padding:0px; vertical-align: top; background-color: #F7F7F7"><td style="vertical-align: top; text-align : var(--ig-left,left); background-color: #F7F7F7; border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px; white-space: nowrap; background-image: url(tbl_bck1024.png)" class="hierarchy"><img src="tbl_spacer.png" alt="." style="background-color: inherit" class="hierarchy"/><img src="tbl_vline.png" alt="." style="background-color: inherit" class="hierarchy"/><img src="tbl_blank.png" alt="." style="background-color: inherit" class="hierarchy"/><img src="tbl_vjoin_end_slicer.png" alt="." style="background-color: inherit" class="hierarchy"/><img src="icon_slice_item.png" alt="." style="background-color: #F7F7F7; background-color: inherit" title="Slice Item" class="hierarchy"/> <a href="StructureDefinition-profile-NamingSystem-definitions.html#NamingSystem.meta.extension:meta" title="Extension URL = http://hl7.org/fhir/1.0/StructureDefinition/extension-NamingSystem.meta">extension:meta</a><a name="NamingSystem.meta.extension.2"> </a></td><td style="vertical-align: top; text-align : var(--ig-left,left); background-color: #F7F7F7; border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px" class="hierarchy"/><td style="vertical-align: top; text-align : var(--ig-left,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 : var(--ig-left,left); background-color: #F7F7F7; border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px" class="hierarchy"><a href="http://hl7.org/fhir/R5/resource.html#Meta">Meta</a></td><td style="vertical-align: top; text-align : var(--ig-left,left); background-color: #F7F7F7; border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px" class="hierarchy">DSTU2: meta additional types<br/><span style="font-weight:bold">URL: </span><a href="StructureDefinition-ext-R2-NamingSystem.meta.html">http://hl7.org/fhir/1.0/StructureDefinition/extension-NamingSystem.meta</a><br/></td></tr>
<tr style="border: 0px #F0F0F0 solid; padding:0px; vertical-align: top; background-color: white"><td style="vertical-align: top; text-align : var(--ig-left,left); background-color: white; border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px; white-space: nowrap; background-image: url(tbl_bck11.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_element.gif" alt="." style="background-color: white; background-color: inherit" title="Element" class="hierarchy"/> <a href="StructureDefinition-profile-NamingSystem-definitions.html#NamingSystem.text">text</a><a name="NamingSystem.text"> </a></td><td style="vertical-align: top; text-align : var(--ig-left,left); background-color: white; border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px" class="hierarchy"/><td style="vertical-align: top; text-align : var(--ig-left,left); background-color: white; border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px" class="hierarchy"/><td style="vertical-align: top; text-align : var(--ig-left,left); background-color: white; border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px" class="hierarchy"/><td style="vertical-align: top; text-align : var(--ig-left,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 : var(--ig-left,left); background-color: #F7F7F7; border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px; white-space: nowrap; background-image: url(tbl_bck103.png)" class="hierarchy"><img src="tbl_spacer.png" alt="." style="background-color: inherit" class="hierarchy"/><img src="tbl_vline.png" alt="." style="background-color: inherit" class="hierarchy"/><img src="tbl_vjoin_end.png" alt="." style="background-color: inherit" class="hierarchy"/><img src="icon_extension_simple.png" alt="." style="background-color: #F7F7F7; background-color: inherit" title="Simple Extension" class="hierarchy"/> <a href="StructureDefinition-profile-NamingSystem-definitions.html#NamingSystem.text.extension">Slices for extension</a><a name="NamingSystem.text.extension"> </a></td><td style="vertical-align: top; text-align : var(--ig-left,left); background-color: #F7F7F7; border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px" class="hierarchy"/><td style="vertical-align: top; text-align : var(--ig-left,left); background-color: #F7F7F7; border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px" class="hierarchy">0..*</td><td style="vertical-align: top; text-align : var(--ig-left,left); background-color: #F7F7F7; border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px" class="hierarchy"><a style="opacity: 0.5; opacity: 0.5" href="http://hl7.org/fhir/R5/extensibility.html#Extension">Extension</a></td><td style="vertical-align: top; text-align : var(--ig-left,left); background-color: #F7F7F7; border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px" class="hierarchy"><span style="opacity: 0.5">Extension</span><br/><span style="font-weight:bold">Slice: </span>Unordered, Open by value:url<br/></td></tr>
<tr style="border: 0px #F0F0F0 solid; padding:0px; vertical-align: top; background-color: white"><td style="vertical-align: top; text-align : var(--ig-left,left); background-color: white; border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px; white-space: nowrap; background-image: url(tbl_bck1024.png)" class="hierarchy"><img src="tbl_spacer.png" alt="." style="background-color: inherit" class="hierarchy"/><img src="tbl_vline.png" alt="." style="background-color: inherit" class="hierarchy"/><img src="tbl_blank.png" alt="." style="background-color: inherit" class="hierarchy"/><img src="tbl_vjoin_end_slicer.png" alt="." style="background-color: inherit" class="hierarchy"/><img src="icon_slice_item.png" alt="." style="background-color: white; background-color: inherit" title="Slice Item" class="hierarchy"/> <a href="StructureDefinition-profile-NamingSystem-definitions.html#NamingSystem.text.extension:text" title="Extension URL = http://hl7.org/fhir/1.0/StructureDefinition/extension-NamingSystem.text">extension:text</a><a name="NamingSystem.text.extension.2"> </a></td><td style="vertical-align: top; text-align : var(--ig-left,left); background-color: white; border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px" class="hierarchy"/><td style="vertical-align: top; text-align : var(--ig-left,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 : var(--ig-left,left); background-color: white; border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px" class="hierarchy">(Complex)</td><td style="vertical-align: top; text-align : var(--ig-left,left); background-color: white; border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px" class="hierarchy">DSTU2: text additional types<br/><span style="font-weight:bold">URL: </span><a href="StructureDefinition-ext-R2-NamingSystem.text.html">http://hl7.org/fhir/1.0/StructureDefinition/extension-NamingSystem.text</a><br/></td></tr>
<tr style="border: 0px #F0F0F0 solid; padding:0px; vertical-align: top; background-color: #F7F7F7"><td style="vertical-align: top; text-align : var(--ig-left,left); background-color: #F7F7F7; border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px; white-space: nowrap; background-image: url(tbl_bck13.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_extension_simple.png" alt="." style="background-color: #F7F7F7; background-color: inherit" title="Simple Extension" class="hierarchy"/> <a href="StructureDefinition-profile-NamingSystem-definitions.html#NamingSystem.extension">Slices for extension</a><a name="NamingSystem.extension"> </a></td><td style="vertical-align: top; text-align : var(--ig-left,left); background-color: #F7F7F7; border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px" class="hierarchy"/><td style="vertical-align: top; text-align : var(--ig-left,left); background-color: #F7F7F7; border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px" class="hierarchy">0..*</td><td style="vertical-align: top; text-align : var(--ig-left,left); background-color: #F7F7F7; border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px" class="hierarchy"><a style="opacity: 0.5; opacity: 0.5" href="http://hl7.org/fhir/R5/extensibility.html#Extension">Extension</a></td><td style="vertical-align: top; text-align : var(--ig-left,left); background-color: #F7F7F7; border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px" class="hierarchy"><span style="opacity: 0.5">Extension</span><br/><span style="font-weight:bold">Slice: </span>Unordered, Open by value:url<br/></td></tr>
<tr style="border: 0px #F0F0F0 solid; padding:0px; vertical-align: top; background-color: white"><td style="vertical-align: top; text-align : var(--ig-left,left); background-color: white; border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px; white-space: nowrap; background-image: url(tbl_bck124.png)" class="hierarchy"><img src="tbl_spacer.png" alt="." style="background-color: inherit" class="hierarchy"/><img src="tbl_vline.png" alt="." style="background-color: inherit" class="hierarchy"/><img src="tbl_vjoin_end_slicer.png" alt="." style="background-color: inherit" class="hierarchy"/><img src="icon_slice_item.png" alt="." style="background-color: white; background-color: inherit" title="Slice Item" class="hierarchy"/> <a href="StructureDefinition-profile-NamingSystem-definitions.html#NamingSystem.extension:replacedBy" title="Extension URL = http://hl7.org/fhir/1.0/StructureDefinition/extension-NamingSystem.replacedBy">extension:replacedBy</a><a name="NamingSystem.extension.2"> </a></td><td style="vertical-align: top; text-align : var(--ig-left,left); background-color: white; border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px" class="hierarchy"/><td style="vertical-align: top; text-align : var(--ig-left,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 : var(--ig-left,left); background-color: white; border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px" class="hierarchy"><a href="http://hl7.org/fhir/R5/references.html">Reference</a>(<a href="StructureDefinition-profile-NamingSystem.html">Cross-version Profile for DSTU2.NamingSystem for use in FHIR R5(0.1.0)</a> | <a href="http://hl7.org/fhir/R5/namingsystem.html">NamingSystem</a>)</td><td style="vertical-align: top; text-align : var(--ig-left,left); background-color: white; border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px" class="hierarchy">DSTU2: Use this instead (new)<br/><span style="font-weight:bold">URL: </span><a href="StructureDefinition-ext-R2-NamingSystem.replacedBy.html">http://hl7.org/fhir/1.0/StructureDefinition/extension-NamingSystem.replacedBy</a><br/></td></tr>
<tr style="border: 0px #F0F0F0 solid; padding:0px; vertical-align: top; background-color: #F7F7F7"><td style="vertical-align: top; text-align : var(--ig-left,left); background-color: #F7F7F7; border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px; white-space: nowrap; background-image: url(tbl_bck11.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_element.gif" alt="." style="background-color: #F7F7F7; background-color: inherit" title="Element" class="hierarchy"/> <a href="StructureDefinition-profile-NamingSystem-definitions.html#NamingSystem.contact">contact</a><a name="NamingSystem.contact"> </a></td><td style="vertical-align: top; text-align : var(--ig-left,left); background-color: #F7F7F7; border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px" class="hierarchy"/><td style="vertical-align: top; text-align : var(--ig-left,left); background-color: #F7F7F7; border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px" class="hierarchy"/><td style="vertical-align: top; text-align : var(--ig-left,left); background-color: #F7F7F7; border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px" class="hierarchy"/><td style="vertical-align: top; text-align : var(--ig-left,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 : var(--ig-left,left); background-color: white; border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px; white-space: nowrap; background-image: url(tbl_bck103.png)" class="hierarchy"><img src="tbl_spacer.png" alt="." style="background-color: inherit" class="hierarchy"/><img src="tbl_vline.png" alt="." style="background-color: inherit" class="hierarchy"/><img src="tbl_vjoin_end.png" alt="." style="background-color: inherit" class="hierarchy"/><img src="icon_extension_simple.png" alt="." style="background-color: white; background-color: inherit" title="Simple Extension" class="hierarchy"/> <a href="StructureDefinition-profile-NamingSystem-definitions.html#NamingSystem.contact.extension">Slices for extension</a><a name="NamingSystem.contact.extension"> </a></td><td style="vertical-align: top; text-align : var(--ig-left,left); background-color: white; border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px" class="hierarchy"/><td style="vertical-align: top; text-align : var(--ig-left,left); background-color: white; border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px" class="hierarchy">0..*</td><td style="vertical-align: top; text-align : var(--ig-left,left); background-color: white; border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px" class="hierarchy"><a style="opacity: 0.5; opacity: 0.5" href="http://hl7.org/fhir/R5/extensibility.html#Extension">Extension</a></td><td style="vertical-align: top; text-align : var(--ig-left,left); background-color: white; border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px" class="hierarchy"><span style="opacity: 0.5">Extension</span><br/><span style="font-weight:bold">Slice: </span>Unordered, Open by value:url<br/></td></tr>
<tr style="border: 0px #F0F0F0 solid; padding:0px; vertical-align: top; background-color: #F7F7F7"><td style="vertical-align: top; text-align : var(--ig-left,left); background-color: #F7F7F7; border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px; white-space: nowrap; background-image: url(tbl_bck1034.png)" class="hierarchy"><img src="tbl_spacer.png" alt="." style="background-color: inherit" class="hierarchy"/><img src="tbl_vline.png" alt="." style="background-color: inherit" class="hierarchy"/><img src="tbl_blank.png" alt="." style="background-color: inherit" class="hierarchy"/><img src="tbl_vjoin_slicer.png" alt="." style="background-color: inherit" class="hierarchy"/><img src="icon_slice_item.png" alt="." style="background-color: #F7F7F7; background-color: inherit" title="Slice Item" class="hierarchy"/> <a href="StructureDefinition-profile-NamingSystem-definitions.html#NamingSystem.contact.extension:name" title="Extension URL = http://hl7.org/fhir/1.0/StructureDefinition/extension-NamingSystem.contact.name">extension:name</a><a name="NamingSystem.contact.extension.2"> </a></td><td style="vertical-align: top; text-align : var(--ig-left,left); background-color: #F7F7F7; border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px" class="hierarchy"/><td style="vertical-align: top; text-align : var(--ig-left,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 : var(--ig-left,left); background-color: #F7F7F7; border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px" class="hierarchy"><a href="http://hl7.org/fhir/R5/datatypes.html#string">string</a></td><td style="vertical-align: top; text-align : var(--ig-left,left); background-color: #F7F7F7; border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px" class="hierarchy">DSTU2: Name of a individual to contact (new)<br/><span style="font-weight:bold">URL: </span><a href="StructureDefinition-ext-R2-NamingSystem.con.name.html">http://hl7.org/fhir/1.0/StructureDefinition/extension-NamingSystem.contact.name</a><br/></td></tr>
<tr style="border: 0px #F0F0F0 solid; padding:0px; vertical-align: top; background-color: white"><td style="vertical-align: top; text-align : var(--ig-left,left); background-color: white; border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px; white-space: nowrap; background-image: url(tbl_bck1024.png)" class="hierarchy"><img src="tbl_spacer.png" alt="." style="background-color: inherit" class="hierarchy"/><img src="tbl_vline.png" alt="." style="background-color: inherit" class="hierarchy"/><img src="tbl_blank.png" alt="." style="background-color: inherit" class="hierarchy"/><img src="tbl_vjoin_end_slicer.png" alt="." style="background-color: inherit" class="hierarchy"/><img src="icon_slice_item.png" alt="." style="background-color: white; background-color: inherit" title="Slice Item" class="hierarchy"/> <a href="StructureDefinition-profile-NamingSystem-definitions.html#NamingSystem.contact.extension:telecom" title="Extension URL = http://hl7.org/fhir/1.0/StructureDefinition/extension-NamingSystem.contact.telecom">extension:telecom</a><a name="NamingSystem.contact.extension.3"> </a></td><td style="vertical-align: top; text-align : var(--ig-left,left); background-color: white; border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px" class="hierarchy"/><td style="vertical-align: top; text-align : var(--ig-left,left); background-color: white; border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px" class="hierarchy">0..*</td><td style="vertical-align: top; text-align : var(--ig-left,left); background-color: white; border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px" class="hierarchy"><a href="http://hl7.org/fhir/R5/datatypes.html#ContactPoint">ContactPoint</a></td><td style="vertical-align: top; text-align : var(--ig-left,left); background-color: white; border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px" class="hierarchy">DSTU2: Contact details for individual or publisher (new)<br/><span style="font-weight:bold">URL: </span><a href="StructureDefinition-ext-R2-NamingSystem.con.telecom.html">http://hl7.org/fhir/1.0/StructureDefinition/extension-NamingSystem.contact.telecom</a><br/></td></tr>
<tr style="border: 0px #F0F0F0 solid; padding:0px; vertical-align: top; background-color: #F7F7F7"><td style="vertical-align: top; text-align : var(--ig-left,left); background-color: #F7F7F7; border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px; white-space: nowrap; background-image: url(tbl_bck01.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_element.gif" alt="." style="background-color: #F7F7F7; background-color: inherit" title="Element" class="hierarchy"/> <a href="StructureDefinition-profile-NamingSystem-definitions.html#NamingSystem.uniqueId">uniqueId</a><a name="NamingSystem.uniqueId"> </a></td><td style="vertical-align: top; text-align : var(--ig-left,left); background-color: #F7F7F7; border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px" class="hierarchy"/><td style="vertical-align: top; text-align : var(--ig-left,left); background-color: #F7F7F7; border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px" class="hierarchy"/><td style="vertical-align: top; text-align : var(--ig-left,left); background-color: #F7F7F7; border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px" class="hierarchy"/><td style="vertical-align: top; text-align : var(--ig-left,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 : var(--ig-left,left); background-color: white; border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px; white-space: nowrap; background-image: url(tbl_bck011.png)" class="hierarchy"><img src="tbl_spacer.png" alt="." style="background-color: inherit" class="hierarchy"/><img src="tbl_blank.png" alt="." style="background-color: inherit" class="hierarchy"/><img src="tbl_vjoin.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-profile-NamingSystem-definitions.html#NamingSystem.uniqueId.type">type</a><a name="NamingSystem.uniqueId.type"> </a></td><td style="vertical-align: top; text-align : var(--ig-left,left); background-color: white; border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px" class="hierarchy"/><td style="vertical-align: top; text-align : var(--ig-left,left); background-color: white; border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px" class="hierarchy"/><td style="vertical-align: top; text-align : var(--ig-left,left); background-color: white; border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px" class="hierarchy"/><td style="vertical-align: top; text-align : var(--ig-left,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 : var(--ig-left,left); background-color: #F7F7F7; border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px; white-space: nowrap; background-image: url(tbl_bck0103.png)" class="hierarchy"><img src="tbl_spacer.png" alt="." style="background-color: inherit" class="hierarchy"/><img src="tbl_blank.png" alt="." style="background-color: inherit" class="hierarchy"/><img src="tbl_vline.png" alt="." style="background-color: inherit" class="hierarchy"/><img src="tbl_vjoin_end.png" alt="." style="background-color: inherit" class="hierarchy"/><img src="icon_extension_simple.png" alt="." style="background-color: #F7F7F7; background-color: inherit" title="Simple Extension" class="hierarchy"/> <a href="StructureDefinition-profile-NamingSystem-definitions.html#NamingSystem.uniqueId.type.extension">Slices for extension</a><a name="NamingSystem.uniqueId.type.extension"> </a></td><td style="vertical-align: top; text-align : var(--ig-left,left); background-color: #F7F7F7; border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px" class="hierarchy"/><td style="vertical-align: top; text-align : var(--ig-left,left); background-color: #F7F7F7; border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px" class="hierarchy">0..*</td><td style="vertical-align: top; text-align : var(--ig-left,left); background-color: #F7F7F7; border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px" class="hierarchy"><a style="opacity: 0.5; opacity: 0.5" href="http://hl7.org/fhir/R5/extensibility.html#Extension">Extension</a></td><td style="vertical-align: top; text-align : var(--ig-left,left); background-color: #F7F7F7; border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px" class="hierarchy"><span style="opacity: 0.5">Extension</span><br/><span style="font-weight:bold">Slice: </span>Unordered, Open by value:url<br/></td></tr>
<tr style="border: 0px #F0F0F0 solid; padding:0px; vertical-align: top; background-color: white"><td style="vertical-align: top; text-align : var(--ig-left,left); background-color: white; border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px; white-space: nowrap; background-image: url(tbl_bck01024.png)" class="hierarchy"><img src="tbl_spacer.png" alt="." style="background-color: inherit" class="hierarchy"/><img src="tbl_blank.png" alt="." style="background-color: inherit" class="hierarchy"/><img src="tbl_vline.png" alt="." style="background-color: inherit" class="hierarchy"/><img src="tbl_blank.png" alt="." style="background-color: inherit" class="hierarchy"/><img src="tbl_vjoin_end_slicer.png" alt="." style="background-color: inherit" class="hierarchy"/><img src="icon_slice_item.png" alt="." style="background-color: white; background-color: inherit" title="Slice Item" class="hierarchy"/> <a href="StructureDefinition-profile-NamingSystem-definitions.html#NamingSystem.uniqueId.type.extension:type" title="Extension URL = http://hl7.org/fhir/1.0/StructureDefinition/extension-NamingSystem.uniqueId.type">extension:type</a><a name="NamingSystem.uniqueId.type.extension.2"> </a></td><td style="vertical-align: top; text-align : var(--ig-left,left); background-color: white; border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px" class="hierarchy"/><td style="vertical-align: top; text-align : var(--ig-left,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 : var(--ig-left,left); background-color: white; border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px" class="hierarchy"><a href="http://hl7.org/fhir/R5/datatypes.html#code">code</a></td><td style="vertical-align: top; text-align : var(--ig-left,left); background-color: white; border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px" class="hierarchy">DSTU2: oid | uuid | uri | other additional codes<br/><span style="font-weight:bold">URL: </span><a href="StructureDefinition-ext-R2-NamingSystem.uni.type.html">http://hl7.org/fhir/1.0/StructureDefinition/extension-NamingSystem.uniqueId.type</a><br class="binding"/><span style="font-weight:bold" title="null" class="binding">Binding: </span><a href="http://hl7.org/fhir/R5/valueset-namingsystem-identifier-type.html" title="http://hl7.org/fhir/ValueSet/namingsystem-identifier-type" class="binding">NamingSystemIdentifierType</a><span title="null" class="binding"> (</span><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." class="binding">required</a><span title="null" class="binding">)</span><span title="null" class="binding">: </span><span title="null" class="binding">Identifies the style of unique identifier used to identify a namespace.</span><br/></td></tr>
<tr style="border: 0px #F0F0F0 solid; padding:0px; vertical-align: top; background-color: #F7F7F7"><td style="vertical-align: top; text-align : var(--ig-left,left); background-color: #F7F7F7; border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px; white-space: nowrap; background-image: url(tbl_bck001.png)" class="hierarchy"><img src="tbl_spacer.png" alt="." style="background-color: inherit" class="hierarchy"/><img src="tbl_blank.png" alt="." style="background-color: inherit" class="hierarchy"/><img src="tbl_vjoin_end.png" alt="." style="background-color: inherit" class="hierarchy"/><img src="icon_element.gif" alt="." style="background-color: #F7F7F7; background-color: inherit" title="Element" class="hierarchy"/> <a href="StructureDefinition-profile-NamingSystem-definitions.html#NamingSystem.uniqueId.period">period</a><a name="NamingSystem.uniqueId.period"> </a></td><td style="vertical-align: top; text-align : var(--ig-left,left); background-color: #F7F7F7; border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px" class="hierarchy"/><td style="vertical-align: top; text-align : var(--ig-left,left); background-color: #F7F7F7; border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px" class="hierarchy"/><td style="vertical-align: top; text-align : var(--ig-left,left); background-color: #F7F7F7; border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px" class="hierarchy"/><td style="vertical-align: top; text-align : var(--ig-left,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 : var(--ig-left,left); background-color: white; border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px; white-space: nowrap; background-image: url(tbl_bck0003.png)" class="hierarchy"><img src="tbl_spacer.png" alt="." style="background-color: inherit" class="hierarchy"/><img src="tbl_blank.png" alt="." style="background-color: inherit" class="hierarchy"/><img src="tbl_blank.png" alt="." style="background-color: inherit" class="hierarchy"/><img src="tbl_vjoin_end.png" alt="." style="background-color: inherit" class="hierarchy"/><img src="icon_extension_simple.png" alt="." style="background-color: white; background-color: inherit" title="Simple Extension" class="hierarchy"/> <a href="StructureDefinition-profile-NamingSystem-definitions.html#NamingSystem.uniqueId.period.extension">Slices for extension</a><a name="NamingSystem.uniqueId.period.extension"> </a></td><td style="vertical-align: top; text-align : var(--ig-left,left); background-color: white; border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px" class="hierarchy"/><td style="vertical-align: top; text-align : var(--ig-left,left); background-color: white; border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px" class="hierarchy">0..*</td><td style="vertical-align: top; text-align : var(--ig-left,left); background-color: white; border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px" class="hierarchy"><a style="opacity: 0.5; opacity: 0.5" href="http://hl7.org/fhir/R5/extensibility.html#Extension">Extension</a></td><td style="vertical-align: top; text-align : var(--ig-left,left); background-color: white; border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px" class="hierarchy"><span style="opacity: 0.5">Extension</span><br/><span style="font-weight:bold">Slice: </span>Unordered, Open by value:url<br/></td></tr>
<tr style="border: 0px #F0F0F0 solid; padding:0px; vertical-align: top; background-color: #F7F7F7"><td style="vertical-align: top; text-align : var(--ig-left,left); background-color: #F7F7F7; border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px; white-space: nowrap; background-image: url(tbl_bck00024.png)" class="hierarchy"><img src="tbl_spacer.png" alt="." style="background-color: inherit" class="hierarchy"/><img src="tbl_blank.png" alt="." style="background-color: inherit" class="hierarchy"/><img src="tbl_blank.png" alt="." style="background-color: inherit" class="hierarchy"/><img src="tbl_blank.png" alt="." style="background-color: inherit" class="hierarchy"/><img src="tbl_vjoin_end_slicer.png" alt="." style="background-color: inherit" class="hierarchy"/><img src="icon_slice_item.png" alt="." style="background-color: #F7F7F7; background-color: inherit" title="Slice Item" class="hierarchy"/> <a href="StructureDefinition-profile-NamingSystem-definitions.html#NamingSystem.uniqueId.period.extension:period" title="Extension URL = http://hl7.org/fhir/1.0/StructureDefinition/extension-NamingSystem.uniqueId.period">extension:period</a><a name="NamingSystem.uniqueId.period.extension.2"> </a></td><td style="vertical-align: top; text-align : var(--ig-left,left); background-color: #F7F7F7; border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px" class="hierarchy"/><td style="vertical-align: top; text-align : var(--ig-left,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 : var(--ig-left,left); background-color: #F7F7F7; border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px" class="hierarchy"><a href="http://hl7.org/fhir/R5/datatypes.html#Period">Period</a></td><td style="vertical-align: top; text-align : var(--ig-left,left); background-color: #F7F7F7; border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px" class="hierarchy">DSTU2: period additional types<br/><span style="font-weight:bold">URL: </span><a href="StructureDefinition-ext-R2-NamingSystem.uni.period.html">http://hl7.org/fhir/1.0/StructureDefinition/extension-NamingSystem.uniqueId.period</a><br/></td></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>
  </text>
  <extension url="http://hl7.org/fhir/StructureDefinition/structuredefinition-wg">
    <valueCode value="fhir"/>
  </extension>
  <extension url="http://hl7.org/fhir/StructureDefinition/package-source">
    <extension url="packageId">
      <valueId value="hl7.fhir.uv.xver-r2.r5"/>
    </extension>
    <extension url="version">
      <valueString value="0.1.0"/>
    </extension>
  </extension>
  <extension url="http://hl7.org/fhir/StructureDefinition/structuredefinition-fmm">
    <valueInteger value="0">
      <extension url="http://hl7.org/fhir/StructureDefinition/structuredefinition-conformance-derivedFrom">
        <valueCanonical value="http://hl7.org/fhir/uv/xver/ImplementationGuide/hl7.fhir.uv.xver-r2.r5"/>
      </extension>
    </valueInteger>
  </extension>
  <extension url="http://hl7.org/fhir/StructureDefinition/structuredefinition-standards-status">
    <valueCode value="trial-use">
      <extension url="http://hl7.org/fhir/StructureDefinition/structuredefinition-conformance-derivedFrom">
        <valueCanonical value="http://hl7.org/fhir/uv/xver/ImplementationGuide/hl7.fhir.uv.xver-r2.r5"/>
      </extension>
    </valueCode>
  </extension>
  <url value="http://hl7.org/fhir/1.0/StructureDefinition/profile-NamingSystem"/>
  <version value="0.1.0"/>
  <name value="Profile_R2_NamingSystem_R5"/>
  <title value="Cross-version Profile for DSTU2.NamingSystem for use in FHIR R5"/>
  <status value="active"/>
  <experimental value="false"/>
  <date value="2026-03-17T16:05:25.6267638-05:00"/>
  <publisher value="FHIR Infrastructure"/>
  <contact>
    <name value="FHIR Infrastructure"/>
    <telecom>
      <system value="url"/>
      <value value="http://www.hl7.org/Special/committees/fiwg"/>
    </telecom>
  </contact>
  <description value="This cross-version profile allows DSTU2 NamingSystem content to be represented via FHIR R5 NamingSystem resources."/>
  <jurisdiction>
    <coding>
      <system value="http://unstats.un.org/unsd/methods/m49/m49.htm"/>
      <code value="001"/>
      <display value="World"/>
    </coding>
  </jurisdiction>
  <fhirVersion value="5.0.0"/>
  <mapping>
    <identity value="w5"/>
    <uri value="http://hl7.org/fhir/fivews"/>
    <name value="FiveWs Pattern Mapping"/>
  </mapping>
  <mapping>
    <identity value="v2"/>
    <uri value="http://hl7.org/v2"/>
    <name value="HL7 V2 Mapping"/>
  </mapping>
  <mapping>
    <identity value="rim"/>
    <uri value="http://hl7.org/v3"/>
    <name value="RIM Mapping"/>
  </mapping>
  <mapping>
    <identity value="objimpl"/>
    <uri value="http://hl7.org/fhir/object-implementation"/>
    <name value="Object Implementation Information"/>
  </mapping>
  <kind value="resource"/>
  <abstract value="false"/>
  <type value="NamingSystem"/>
  <baseDefinition value="http://hl7.org/fhir/StructureDefinition/NamingSystem|5.0.0"/>
  <derivation value="constraint"/>
  <snapshot>
    <extension url="http://hl7.org/fhir/tools/StructureDefinition/snapshot-base-version">
      <valueString value="5.0.0"/>
    </extension>
    <element id="NamingSystem">
      <path value="NamingSystem"/>
      <short value="System of unique identification"/>
      <definition value="A curated namespace that issues unique symbols within that namespace for the identification of concepts, people, devices, etc.  Represents a &quot;System&quot; used within the Identifier and Coding data types."/>
      <min value="0"/>
      <max value="*"/>
      <base>
        <path value="NamingSystem"/>
        <min value="0"/>
        <max value="*"/>
      </base>
      <constraint>
        <key value="cnl-0"/>
        <severity value="warning"/>
        <human value="Name should be usable as an identifier for the module by machine processing applications such as code generation"/>
        <expression value="name.exists() implies name.matches('^[A-Z]([A-Za-z0-9_]){1,254}$')"/>
        <source value="http://hl7.org/fhir/StructureDefinition/NamingSystem|5.0.0"/>
      </constraint>
      <constraint>
        <key value="nsd-1"/>
        <severity value="error"/>
        <human value="Root systems cannot have uuid identifiers"/>
        <expression value="kind != 'root' or uniqueId.all(type != 'uuid')"/>
        <source value="http://hl7.org/fhir/StructureDefinition/NamingSystem|5.0.0"/>
      </constraint>
      <constraint>
        <key value="nsd-2"/>
        <severity value="error"/>
        <human value="Can't have more than one preferred identifier for a type"/>
        <expression value="uniqueId.where(preferred = true).select(type).isDistinct()"/>
        <source value="http://hl7.org/fhir/StructureDefinition/NamingSystem|5.0.0"/>
      </constraint>
      <constraint>
        <key value="nsd-3"/>
        <severity value="error"/>
        <human value="Can't have more than one authoritative identifier for a type/period combination (only one authoritative identifier allowed at any given point of time)"/>
        <expression value="uniqueId.where(authoritative = 'true').select(type.toString() &amp; period.start.toString() &amp; period.end.toString()).isDistinct()"/>
        <source value="http://hl7.org/fhir/StructureDefinition/NamingSystem|5.0.0"/>
      </constraint>
      <mustSupport value="false"/>
      <isModifier value="false"/>
      <isSummary value="false"/>
      <mapping>
        <identity value="w5"/>
        <map value="conformance.behavior,conformance.terminology"/>
      </mapping>
      <mapping>
        <identity value="v2"/>
        <map value="N/A"/>
      </mapping>
      <mapping>
        <identity value="rim"/>
        <map value="N/A"/>
      </mapping>
    </element>
    <element id="NamingSystem.id">
      <path value="NamingSystem.id"/>
      <short value="Logical id of this artifact"/>
      <definition value="The logical id of the resource, as used in the URL for the resource. Once assigned, this value never changes."/>
      <comment value="Within the context of the FHIR RESTful interactions, the resource has an id except for cases like the create and conditional update. Otherwise, the use of the resouce id depends on the given use case."/>
      <min value="0"/>
      <max value="1"/>
      <base>
        <path value="Resource.id"/>
        <min value="0"/>
        <max value="1"/>
      </base>
      <type>
        <extension url="http://hl7.org/fhir/StructureDefinition/structuredefinition-fhir-type">
          <valueUrl value="id"/>
        </extension>
        <code value="http://hl7.org/fhirpath/System.String"/>
      </type>
      <mustSupport value="false"/>
      <isModifier value="false"/>
      <isSummary value="true"/>
    </element>
    <element id="NamingSystem.meta">
      <path value="NamingSystem.meta"/>
      <short value="Metadata about the resource"/>
      <definition value="The metadata about the resource. This is content that is maintained by the infrastructure. Changes to the content might not always be associated with version changes to the resource."/>
      <min value="0"/>
      <max value="1"/>
      <base>
        <path value="Resource.meta"/>
        <min value="0"/>
        <max value="1"/>
      </base>
      <type>
        <code value="Meta"/>
      </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|5.0.0"/>
      </constraint>
      <mustSupport value="false"/>
      <isModifier value="false"/>
      <isSummary value="true"/>
    </element>
    <element id="NamingSystem.meta.id">
      <path value="NamingSystem.meta.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>
        <extension url="http://hl7.org/fhir/StructureDefinition/structuredefinition-fhir-type">
          <valueUrl value="id"/>
        </extension>
        <code value="http://hl7.org/fhirpath/System.String"/>
      </type>
      <condition value="ele-1"/>
      <isModifier value="false"/>
      <isSummary value="false"/>
      <mapping>
        <identity value="rim"/>
        <map value="n/a"/>
      </mapping>
    </element>
    <element id="NamingSystem.meta.extension">
      <path value="NamingSystem.meta.extension"/>
      <slicing>
        <discriminator>
          <type value="value"/>
          <path value="url"/>
        </discriminator>
        <description value="Extensions are always sliced by (at least) url"/>
        <ordered value="false"/>
        <rules value="open"/>
      </slicing>
      <short value="Extension"/>
      <definition value="An Extension"/>
      <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|5.0.0"/>
      </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|5.0.0"/>
      </constraint>
      <isModifier value="false"/>
      <isSummary value="false"/>
    </element>
    <element id="NamingSystem.meta.extension:meta">
      <path value="NamingSystem.meta.extension"/>
      <sliceName value="meta"/>
      <short value="DSTU2: meta additional types"/>
      <definition value="DSTU2: `NamingSystem.meta` additional types (Meta) additional types from child elements (lastUpdated, profile, security, tag, versionId)"/>
      <comment value="Element `NamingSystem.meta` is mapped to FHIR R5 element `NamingSystem.meta` as `SourceIsBroaderThanTarget`.&#xA;The mappings for `NamingSystem.meta` do not cover the following types: Meta.&#xA;The mappings for `NamingSystem.meta` do not cover the following types based on type expansion: lastUpdated, profile, security, tag, versionId."/>
      <min value="0"/>
      <max value="1"/>
      <base>
        <path value="Element.extension"/>
        <min value="0"/>
        <max value="*"/>
      </base>
      <type>
        <code value="Extension"/>
        <profile value="http://hl7.org/fhir/1.0/StructureDefinition/extension-NamingSystem.meta|0.1.0"/>
      </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|5.0.0"/>
      </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|5.0.0"/>
      </constraint>
      <isModifier value="false"/>
      <isSummary value="false"/>
    </element>
    <element id="NamingSystem.meta.versionId">
      <path value="NamingSystem.meta.versionId"/>
      <short value="Version specific identifier"/>
      <definition value="The version specific identifier, as it appears in the version portion of the URL. This value changes when the resource is created, updated, or deleted."/>
      <comment value="The server assigns this value, and ignores what the client specifies, except in the case that the server is imposing version integrity on updates/deletes."/>
      <min value="0"/>
      <max value="1"/>
      <base>
        <path value="Meta.versionId"/>
        <min value="0"/>
        <max value="1"/>
      </base>
      <type>
        <code value="id"/>
      </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|5.0.0"/>
      </constraint>
      <isModifier value="false"/>
      <isSummary value="true"/>
    </element>
    <element id="NamingSystem.meta.lastUpdated">
      <path value="NamingSystem.meta.lastUpdated"/>
      <short value="When the resource version last changed"/>
      <definition value="When the resource last changed - e.g. when the version changed."/>
      <comment value="This element is generally omitted in instances submitted in a PUT or POST. Instead, it is populated in the response instance and when retrieving information using a GET. The server / resource manager sets this value; what a client provides is irrelevant. This is equivalent to the HTTP Last-Modified and SHOULD have the same value on a [read](http://hl7.org/fhir/R5/http.html#read) interaction."/>
      <min value="0"/>
      <max value="1"/>
      <base>
        <path value="Meta.lastUpdated"/>
        <min value="0"/>
        <max value="1"/>
      </base>
      <type>
        <code value="instant"/>
      </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|5.0.0"/>
      </constraint>
      <isModifier value="false"/>
      <isSummary value="true"/>
    </element>
    <element id="NamingSystem.meta.source">
      <path value="NamingSystem.meta.source"/>
      <short value="Identifies where the resource comes from"/>
      <definition value="A uri that identifies the source system of the resource. This provides a minimal amount of [Provenance](http://hl7.org/fhir/R5/provenance.html#) information that can be used to track or differentiate the source of information in the resource. The source may identify another FHIR server, document, message, database, etc."/>
      <comment value="The exact use of the source (and the possible implied Provenance.entity.role and agent.role) is left to implementer discretion. Only one nominated source is allowed; for additional provenance details, a full Provenance resource should be used. The source may correspond to Provenance.entity.what[x] or Provenance.agent.who[x], though it may be a more general or abstract reference. &#xA;&#xA;This element can be used to indicate where the current master source of a resource that has a canonical URL if the resource is no longer hosted at the canonical URL."/>
      <min value="0"/>
      <max value="1"/>
      <base>
        <path value="Meta.source"/>
        <min value="0"/>
        <max value="1"/>
      </base>
      <type>
        <code value="uri"/>
      </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|5.0.0"/>
      </constraint>
      <isModifier value="false"/>
      <isSummary value="true"/>
    </element>
    <element id="NamingSystem.meta.profile">
      <path value="NamingSystem.meta.profile"/>
      <short value="Profiles this resource claims to conform to"/>
      <definition value="A list of profiles (references to [StructureDefinition](http://hl7.org/fhir/R5/structuredefinition.html#) resources) that this resource claims to conform to. The URL is a reference to [StructureDefinition.url](http://hl7.org/fhir/R5/structuredefinition-definitions.html#StructureDefinition.url)."/>
      <comment value="It is up to the server and/or other infrastructure of policy to determine whether/how these claims are verified and/or updated over time.  The list of profile URLs is a set."/>
      <min value="0"/>
      <max value="*"/>
      <base>
        <path value="Meta.profile"/>
        <min value="0"/>
        <max value="*"/>
      </base>
      <type>
        <code value="canonical"/>
        <targetProfile value="http://hl7.org/fhir/StructureDefinition/StructureDefinition|5.0.0"/>
      </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|5.0.0"/>
      </constraint>
      <isModifier value="false"/>
      <isSummary value="true"/>
    </element>
    <element id="NamingSystem.meta.security">
      <path value="NamingSystem.meta.security"/>
      <short value="Security Labels applied to this resource"/>
      <definition value="Security labels applied to this resource. These tags connect specific resources to the overall security policy and infrastructure."/>
      <comment value="The security labels can be updated without changing the stated version of the resource. The list of security labels is a set. Uniqueness is based the system/code, and version and display are ignored."/>
      <min value="0"/>
      <max value="*"/>
      <base>
        <path value="Meta.security"/>
        <min value="0"/>
        <max value="*"/>
      </base>
      <type>
        <code value="Coding"/>
      </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|5.0.0"/>
      </constraint>
      <isModifier value="false"/>
      <isSummary value="true"/>
      <binding>
        <extension url="http://hl7.org/fhir/StructureDefinition/elementdefinition-bindingName">
          <valueString value="SecurityLabels"/>
        </extension>
        <strength value="extensible"/>
        <description value="Security Labels from the Healthcare Privacy and Security Classification System."/>
        <valueSet value="http://hl7.org/fhir/ValueSet/security-labels|5.0.0"/>
      </binding>
    </element>
    <element id="NamingSystem.meta.tag">
      <path value="NamingSystem.meta.tag"/>
      <short value="Tags applied to this resource"/>
      <definition value="Tags applied to this resource. Tags are intended to be used to identify and relate resources to process and workflow, and applications are not required to consider the tags when interpreting the meaning of a resource."/>
      <comment value="The tags can be updated without changing the stated version of the resource. The list of tags is a set. Uniqueness is based the system/code, and version and display are ignored."/>
      <min value="0"/>
      <max value="*"/>
      <base>
        <path value="Meta.tag"/>
        <min value="0"/>
        <max value="*"/>
      </base>
      <type>
        <code value="Coding"/>
      </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|5.0.0"/>
      </constraint>
      <isModifier value="false"/>
      <isSummary value="true"/>
      <binding>
        <extension url="http://hl7.org/fhir/StructureDefinition/elementdefinition-bindingName">
          <valueString value="Tags"/>
        </extension>
        <strength value="example"/>
        <description value="Codes that represent various types of tags, commonly workflow-related; e.g. &quot;Needs review by Dr. Jones&quot;."/>
        <valueSet value="http://hl7.org/fhir/ValueSet/common-tags|5.0.0"/>
      </binding>
    </element>
    <element id="NamingSystem.implicitRules">
      <path value="NamingSystem.implicitRules"/>
      <short value="A set of rules under which this content was created"/>
      <definition value="A reference to a set of rules that were followed when the resource was constructed, and which must be understood when processing the content. Often, this is a reference to an implementation guide that defines the special rules along with other profiles etc."/>
      <comment value="Asserting this rule set restricts the content to be only understood by a limited set of trading partners. This inherently limits the usefulness of the data in the long term. However, the existing health eco-system is highly fractured, and not yet ready to define, collect, and exchange data in a generally computable sense. Wherever possible, implementers and/or specification writers should avoid using this element. Often, when used, the URL is a reference to an implementation guide that defines these special rules as part of its narrative along with other profiles, value sets, etc."/>
      <min value="0"/>
      <max value="1"/>
      <base>
        <path value="Resource.implicitRules"/>
        <min value="0"/>
        <max value="1"/>
      </base>
      <type>
        <code value="uri"/>
      </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|5.0.0"/>
      </constraint>
      <mustSupport value="false"/>
      <isModifier value="true"/>
      <isModifierReason value="This element is labeled as a modifier because the implicit rules may provide additional knowledge about the resource that modifies its meaning or interpretation"/>
      <isSummary value="true"/>
    </element>
    <element id="NamingSystem.language">
      <path value="NamingSystem.language"/>
      <short value="Language of the resource content"/>
      <definition value="The base language in which the resource is written."/>
      <comment value="Language is provided to support indexing and accessibility (typically, services such as text to speech use the language tag). The html language tag in the narrative applies  to the narrative. The language tag on the resource may be used to specify the language of other presentations generated from the data in the resource. Not all the content has to be in the base language. The Resource.language should not be assumed to apply to the narrative automatically. If a language is specified, it should it also be specified on the div element in the html (see rules in HTML5 for information about the relationship between xml:lang and the html lang attribute)."/>
      <min value="0"/>
      <max value="1"/>
      <base>
        <path value="Resource.language"/>
        <min value="0"/>
        <max value="1"/>
      </base>
      <type>
        <code value="code"/>
      </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|5.0.0"/>
      </constraint>
      <mustSupport value="false"/>
      <isModifier value="false"/>
      <isSummary value="false"/>
      <binding>
        <extension url="http://hl7.org/fhir/StructureDefinition/elementdefinition-bindingName">
          <valueString value="Language"/>
        </extension>
        <strength value="required"/>
        <description value="IETF language tag for a human language"/>
        <valueSet value="http://hl7.org/fhir/ValueSet/all-languages|5.0.0"/>
        <additional>
          <purpose value="starter"/>
          <valueSet value="http://hl7.org/fhir/ValueSet/languages|5.0.0"/>
        </additional>
      </binding>
    </element>
    <element id="NamingSystem.text">
      <path value="NamingSystem.text"/>
      <short value="Text summary of the resource, for human interpretation"/>
      <definition value="A human-readable narrative that contains a summary of the resource and can be used to represent the content of the resource to a human. The narrative need not encode all the structured data, but is required to contain sufficient detail to make it &quot;clinically safe&quot; for a human to just read the narrative. Resource definitions may define what content should be represented in the narrative to ensure clinical safety."/>
      <comment value="Contained resources do not have a narrative. Resources that are not contained SHOULD have a narrative. In some cases, a resource may only have text with little or no additional discrete data (as long as all minOccurs=1 elements are satisfied).  This may be necessary for data from legacy systems where information is captured as a &quot;text blob&quot; or where text is additionally entered raw or narrated and encoded information is added later."/>
      <alias value="narrative"/>
      <alias value="html"/>
      <alias value="xhtml"/>
      <alias value="display"/>
      <min value="0"/>
      <max value="1"/>
      <base>
        <path value="DomainResource.text"/>
        <min value="0"/>
        <max value="1"/>
      </base>
      <type>
        <code value="Narrative"/>
      </type>
      <condition value="dom-6"/>
      <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|5.0.0"/>
      </constraint>
      <mustSupport value="false"/>
      <isModifier value="false"/>
      <isSummary value="false"/>
      <mapping>
        <identity value="rim"/>
        <map value="Act.text?"/>
      </mapping>
    </element>
    <element id="NamingSystem.text.id">
      <path value="NamingSystem.text.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>
        <extension url="http://hl7.org/fhir/StructureDefinition/structuredefinition-fhir-type">
          <valueUrl value="id"/>
        </extension>
        <code value="http://hl7.org/fhirpath/System.String"/>
      </type>
      <condition value="ele-1"/>
      <isModifier value="false"/>
      <isSummary value="false"/>
      <mapping>
        <identity value="rim"/>
        <map value="n/a"/>
      </mapping>
    </element>
    <element id="NamingSystem.text.extension">
      <path value="NamingSystem.text.extension"/>
      <slicing>
        <discriminator>
          <type value="value"/>
          <path value="url"/>
        </discriminator>
        <description value="Extensions are always sliced by (at least) url"/>
        <ordered value="false"/>
        <rules value="open"/>
      </slicing>
      <short value="Extension"/>
      <definition value="An Extension"/>
      <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|5.0.0"/>
      </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|5.0.0"/>
      </constraint>
      <isModifier value="false"/>
      <isSummary value="false"/>
    </element>
    <element id="NamingSystem.text.extension:text">
      <path value="NamingSystem.text.extension"/>
      <sliceName value="text"/>
      <short value="DSTU2: text additional types"/>
      <definition value="DSTU2: `NamingSystem.text` additional types (Narrative) additional types from child elements (div, status)"/>
      <comment value="Element `NamingSystem.text` is mapped to FHIR R5 element `NamingSystem.text` as `SourceIsBroaderThanTarget`.&#xA;The mappings for `NamingSystem.text` do not cover the following types: Narrative.&#xA;The mappings for `NamingSystem.text` do not cover the following types based on type expansion: div, status.&#xA;Contained resources do not have narrative. Resources that are not contained SHOULD have a narrative."/>
      <min value="0"/>
      <max value="1"/>
      <base>
        <path value="Element.extension"/>
        <min value="0"/>
        <max value="*"/>
      </base>
      <type>
        <code value="Extension"/>
        <profile value="http://hl7.org/fhir/1.0/StructureDefinition/extension-NamingSystem.text|0.1.0"/>
      </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|5.0.0"/>
      </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|5.0.0"/>
      </constraint>
      <isModifier value="false"/>
      <isSummary value="false"/>
    </element>
    <element id="NamingSystem.text.status">
      <path value="NamingSystem.text.status"/>
      <short value="generated | extensions | additional | empty"/>
      <definition value="The status of the narrative - whether it's entirely generated (from just the defined data or the extensions too), or whether a human authored it and it may contain additional data."/>
      <min value="1"/>
      <max value="1"/>
      <base>
        <path value="Narrative.status"/>
        <min value="1"/>
        <max value="1"/>
      </base>
      <type>
        <code value="code"/>
      </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|5.0.0"/>
      </constraint>
      <isModifier value="false"/>
      <isSummary value="false"/>
      <binding>
        <extension url="http://hl7.org/fhir/StructureDefinition/elementdefinition-bindingName">
          <valueString value="NarrativeStatus"/>
        </extension>
        <strength value="required"/>
        <description value="The status of a resource narrative."/>
        <valueSet value="http://hl7.org/fhir/ValueSet/narrative-status|5.0.0"/>
      </binding>
      <mapping>
        <identity value="rim"/>
        <map value="N/A"/>
      </mapping>
    </element>
    <element id="NamingSystem.text.div">
      <path value="NamingSystem.text.div"/>
      <short value="Limited xhtml content"/>
      <definition value="The actual narrative content, a stripped down version of XHTML."/>
      <comment value="The contents of the html element are an XHTML fragment containing only the basic html formatting elements described in chapters 7-11 and 15 of the HTML 4.0 standard, &lt;a&gt; elements (either name or href), images and internally contained stylesheets. The XHTML content SHALL NOT contain a head, a body, external stylesheet references, scripts, forms, base/link/xlink, frames, iframes and objects."/>
      <min value="1"/>
      <max value="1"/>
      <base>
        <path value="Narrative.div"/>
        <min value="1"/>
        <max value="1"/>
      </base>
      <type>
        <code value="xhtml"/>
      </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|5.0.0"/>
      </constraint>
      <constraint>
        <key value="txt-1"/>
        <severity value="error"/>
        <human value="The narrative SHALL contain only the basic html formatting elements and attributes described in chapters 7-11 (except section 4 of chapter 9) and 15 of the HTML 4.0 standard, &lt;a&gt; elements (either name or href), images and internally contained style attributes"/>
        <expression value="htmlChecks()"/>
        <source value="http://hl7.org/fhir/StructureDefinition/Narrative|5.0.0"/>
      </constraint>
      <constraint>
        <key value="txt-2"/>
        <severity value="error"/>
        <human value="The narrative SHALL have some non-whitespace content"/>
        <expression value="htmlChecks()"/>
        <source value="http://hl7.org/fhir/StructureDefinition/Narrative|5.0.0"/>
      </constraint>
      <isModifier value="false"/>
      <isSummary value="false"/>
      <mapping>
        <identity value="rim"/>
        <map value="N/A"/>
      </mapping>
    </element>
    <element id="NamingSystem.contained">
      <path value="NamingSystem.contained"/>
      <short value="Contained, inline Resources"/>
      <definition value="These resources do not have an independent existence apart from the resource that contains them - they cannot be identified independently, nor can they have their own independent transaction scope. This is allowed to be a Parameters resource if and only if it is referenced by a resource that provides context/meaning."/>
      <comment value="This should never be done when the content can be identified properly, as once identification is lost, it is extremely difficult (and context dependent) to restore it again. Contained resources may have profiles and tags in their meta elements, but SHALL NOT have security labels."/>
      <alias value="inline resources"/>
      <alias value="anonymous resources"/>
      <alias value="contained resources"/>
      <min value="0"/>
      <max value="*"/>
      <base>
        <path value="DomainResource.contained"/>
        <min value="0"/>
        <max value="*"/>
      </base>
      <type>
        <code value="Resource"/>
      </type>
      <condition value="dom-2"/>
      <condition value="dom-4"/>
      <condition value="dom-3"/>
      <condition value="dom-5"/>
      <mustSupport value="false"/>
      <isModifier value="false"/>
      <isSummary value="false"/>
      <mapping>
        <identity value="rim"/>
        <map value="N/A"/>
      </mapping>
    </element>
    <element id="NamingSystem.extension">
      <path value="NamingSystem.extension"/>
      <slicing>
        <discriminator>
          <type value="value"/>
          <path value="url"/>
        </discriminator>
        <ordered value="false"/>
        <rules value="open"/>
      </slicing>
      <short value="Extension"/>
      <definition value="An Extension"/>
      <min value="0"/>
      <max value="*"/>
      <base>
        <path value="DomainResource.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|5.0.0"/>
      </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|5.0.0"/>
      </constraint>
      <mustSupport value="false"/>
      <isModifier value="false"/>
      <isSummary value="false"/>
    </element>
    <element id="NamingSystem.extension:replacedBy">
      <path value="NamingSystem.extension"/>
      <sliceName value="replacedBy"/>
      <short value="DSTU2: Use this instead (new)"/>
      <definition value="DSTU2: `NamingSystem.replacedBy` (new:Reference(NamingSystem))"/>
      <comment value="Element `NamingSystem.replacedBy` has a context of NamingSystem based on following the parent source element upwards and mapping to `NamingSystem`.&#xA;Element `NamingSystem.replacedBy` has no mapping targets in FHIR R5. Typically, this is because the element has been added (is a new element)."/>
      <min value="0"/>
      <max value="1"/>
      <base>
        <path value="DomainResource.extension"/>
        <min value="0"/>
        <max value="*"/>
      </base>
      <type>
        <code value="Extension"/>
        <profile value="http://hl7.org/fhir/1.0/StructureDefinition/extension-NamingSystem.replacedBy|0.1.0"/>
      </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|5.0.0"/>
      </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|5.0.0"/>
      </constraint>
      <mustSupport value="false"/>
      <isModifier value="false"/>
      <isSummary value="false"/>
    </element>
    <element id="NamingSystem.modifierExtension">
      <path value="NamingSystem.modifierExtension"/>
      <short value="Extensions that cannot be ignored"/>
      <definition value="May be used to represent additional information that is not part of the basic definition of the resource and that modifies the understanding of the element that contains it and/or the understanding of the containing element's descendants. Usually modifier elements provide negation or qualification. 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 is allowed to define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension. Applications processing a resource are required to check for modifier extensions.&#xA;&#xA;Modifier extensions SHALL NOT change the meaning of any elements on Resource or DomainResource (including cannot change the meaning of modifierExtension itself)."/>
      <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."/>
      <requirements value="Modifier extensions allow for extensions that *cannot* be safely ignored to be clearly distinguished from the vast majority of extensions which can be safely ignored.  This promotes interoperability by eliminating the need for implementers to prohibit the presence of extensions. For further information, see the [definition of modifier extensions](http://hl7.org/fhir/R5/extensibility.html#modifierExtension)."/>
      <alias value="extensions"/>
      <alias value="user content"/>
      <min value="0"/>
      <max value="*"/>
      <base>
        <path value="DomainResource.modifierExtension"/>
        <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|5.0.0"/>
      </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|5.0.0"/>
      </constraint>
      <mustSupport value="false"/>
      <isModifier value="true"/>
      <isModifierReason value="Modifier extensions are expected to modify the meaning or interpretation of the resource that contains them"/>
      <isSummary value="true"/>
      <mapping>
        <identity value="rim"/>
        <map value="N/A"/>
      </mapping>
    </element>
    <element id="NamingSystem.url">
      <path value="NamingSystem.url"/>
      <short value="Canonical identifier for this naming system, represented as a URI (globally unique)"/>
      <definition value="An absolute URI that is used to identify this naming system when it is referenced in a specification, model, design or an instance; also called its canonical identifier. This SHOULD be globally unique and SHOULD be a literal address at which an authoritative instance of this naming system is (or will be) published. This URL can be the target of a canonical reference. It SHALL remain the same when the naming system is stored on different servers."/>
      <comment value="Can be a urn:uuid: or a urn:oid: but real http: addresses are preferred.  Multiple instances may share the same URL if they have a distinct version.&#xA;&#xA;The determination of when to create a new version of a resource (same url, new version) vs. defining a new artifact is up to the author.  Considerations for making this decision are found in [Technical and Business Versions](http://hl7.org/fhir/R5/resource.html#versions). &#xA;&#xA;In some cases, the resource can no longer be found at the stated url, but the url itself cannot change. Implementations can use the [meta.source](http://hl7.org/fhir/R5/resource.html#meta) element to indicate where the current master source of the resource can be found."/>
      <requirements value="Allows the naming system to be referenced by a single globally unique identifier."/>
      <min value="0"/>
      <max value="1"/>
      <base>
        <path value="NamingSystem.url"/>
        <min value="0"/>
        <max value="1"/>
      </base>
      <type>
        <code value="uri"/>
      </type>
      <constraint>
        <key value="cnl-1"/>
        <severity value="warning"/>
        <human value="URL should not contain | or # - these characters make processing canonical references problematic"/>
        <expression value="exists() implies matches('^[^|# ]+$')"/>
        <source value="http://hl7.org/fhir/StructureDefinition/NamingSystem|5.0.0"/>
      </constraint>
      <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|5.0.0"/>
      </constraint>
      <mustSupport value="false"/>
      <isModifier value="false"/>
      <isSummary value="true"/>
      <mapping>
        <identity value="w5"/>
        <map value="FiveWs.identifier"/>
      </mapping>
    </element>
    <element id="NamingSystem.identifier">
      <path value="NamingSystem.identifier"/>
      <short value="Additional identifier for the naming system (business identifier)"/>
      <definition value="A formal identifier that is used to identify this naming system when it is represented in other formats, or referenced in a specification, model, design or an instance."/>
      <comment value="Typically, this is used for identifiers that can go in an HL7 V3 II (instance identifier) data type, and can then identify this naming system outside of FHIR, where it is not possible to use the logical URI."/>
      <requirements value="Allows externally provided and/or usable business identifiers to be easily associated with the naming system."/>
      <min value="0"/>
      <max value="*"/>
      <base>
        <path value="NamingSystem.identifier"/>
        <min value="0"/>
        <max value="*"/>
      </base>
      <type>
        <code value="Identifier"/>
      </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|5.0.0"/>
      </constraint>
      <mustSupport value="false"/>
      <isModifier value="false"/>
      <isSummary value="true"/>
      <mapping>
        <identity value="w5"/>
        <map value="FiveWs.identifier"/>
      </mapping>
      <mapping>
        <identity value="objimpl"/>
        <map value="no-gen-base"/>
      </mapping>
    </element>
    <element id="NamingSystem.version">
      <path value="NamingSystem.version"/>
      <short value="Business version of the naming system"/>
      <definition value="The identifier that is used to identify this version of the naming system when it is referenced in a specification, model, design or instance. This is an arbitrary value managed by the naming system author and is not expected to be globally unique. For example, it might be a timestamp (e.g. yyyymmdd) if a managed version is not available. There is also no expectation that versions can be placed in a lexicographical sequence."/>
      <comment value="There may be different naming system instances that have the same identifier but different versions.  The version can be appended to the url in a reference to allow a reference to a particular business version of the naming system with the format [url]|[version]. The version SHOULD NOT contain a '#' - see [Business Version](http://hl7.org/fhir/R5/resource.html#bv-format)."/>
      <min value="0"/>
      <max value="1"/>
      <base>
        <path value="NamingSystem.version"/>
        <min value="0"/>
        <max value="1"/>
      </base>
      <type>
        <code value="string"/>
      </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|5.0.0"/>
      </constraint>
      <mustSupport value="false"/>
      <isModifier value="false"/>
      <isSummary value="true"/>
      <mapping>
        <identity value="w5"/>
        <map value="FiveWs.version"/>
      </mapping>
    </element>
    <element id="NamingSystem.versionAlgorithm[x]">
      <path value="NamingSystem.versionAlgorithm[x]"/>
      <short value="How to compare versions"/>
      <definition value="Indicates the mechanism used to compare versions to determine which NamingSystem is more current."/>
      <comment value="If set as a string, this is a FHIRPath expression that has two additional context variables passed in - %version1 and %version2 and will return a negative number if version1 is newer, a positive number if version2 and a 0 if the version ordering can't be successfully be determined."/>
      <min value="0"/>
      <max value="1"/>
      <base>
        <path value="NamingSystem.versionAlgorithm[x]"/>
        <min value="0"/>
        <max value="1"/>
      </base>
      <type>
        <code value="string"/>
      </type>
      <type>
        <code value="Coding"/>
      </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|5.0.0"/>
      </constraint>
      <mustSupport value="false"/>
      <isModifier value="false"/>
      <isSummary value="true"/>
      <binding>
        <strength value="extensible"/>
        <valueSet value="http://hl7.org/fhir/ValueSet/version-algorithm|5.0.0"/>
      </binding>
    </element>
    <element id="NamingSystem.name">
      <path value="NamingSystem.name"/>
      <short value="Name for this naming system (computer friendly)"/>
      <definition value="A natural language name identifying the naming system. This name should be usable as an identifier for the module by machine processing applications such as code generation."/>
      <comment value="The name is not expected to be globally unique. The name should be a simple alphanumeric type name to ensure that it is machine-processing friendly.The&quot;symbolic name&quot; for an OID would be captured as an extension."/>
      <requirements value="Support human navigation and code generation."/>
      <min value="1"/>
      <max value="1"/>
      <base>
        <path value="NamingSystem.name"/>
        <min value="1"/>
        <max value="1"/>
      </base>
      <type>
        <code value="string"/>
      </type>
      <condition value="cnl-0"/>
      <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|5.0.0"/>
      </constraint>
      <mustSupport value="false"/>
      <isModifier value="false"/>
      <isSummary value="true"/>
    </element>
    <element id="NamingSystem.title">
      <extension url="http://hl7.org/fhir/StructureDefinition/elementdefinition-translatable">
        <valueBoolean value="true"/>
      </extension>
      <extension url="http://hl7.org/fhir/StructureDefinition/elementdefinition-translatable">
        <valueBoolean value="true"/>
      </extension>
      <path value="NamingSystem.title"/>
      <short value="Title for this naming system (human friendly)"/>
      <definition value="A short, descriptive, user-friendly title for the naming system."/>
      <comment value="This title does not need to be machine-processing friendly and may contain punctuation, white-space, etc."/>
      <min value="0"/>
      <max value="1"/>
      <base>
        <path value="NamingSystem.title"/>
        <min value="0"/>
        <max value="1"/>
      </base>
      <type>
        <code value="string"/>
      </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|5.0.0"/>
      </constraint>
      <mustSupport value="false"/>
      <isModifier value="false"/>
      <isSummary value="true"/>
    </element>
    <element id="NamingSystem.status">
      <path value="NamingSystem.status"/>
      <short value="draft | active | retired | unknown"/>
      <definition value="The status of this naming system. Enables tracking the life-cycle of the content."/>
      <comment value="Allows filtering of naming systems that are appropriate for use versus not.&#xA;&#xA;See guidance around (not) making local changes to elements [here](http://hl7.org/fhir/R5/canonicalresource.html#localization)."/>
      <min value="1"/>
      <max value="1"/>
      <base>
        <path value="NamingSystem.status"/>
        <min value="1"/>
        <max value="1"/>
      </base>
      <type>
        <code value="code"/>
      </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|5.0.0"/>
      </constraint>
      <mustSupport value="false"/>
      <isModifier value="true"/>
      <isModifierReason value="This is labeled as &quot;Is Modifier&quot; because applications should not use a retired {{title}} without due consideration"/>
      <isSummary value="true"/>
      <binding>
        <extension url="http://hl7.org/fhir/StructureDefinition/elementdefinition-bindingName">
          <valueString value="PublicationStatus"/>
        </extension>
        <strength value="required"/>
        <description value="The lifecycle status of an artifact."/>
        <valueSet value="http://hl7.org/fhir/ValueSet/publication-status|5.0.0"/>
      </binding>
      <mapping>
        <identity value="w5"/>
        <map value="FiveWs.status"/>
      </mapping>
    </element>
    <element id="NamingSystem.kind">
      <path value="NamingSystem.kind"/>
      <short value="codesystem | identifier | root"/>
      <definition value="Indicates the purpose for the naming system - what kinds of things does it make unique?"/>
      <min value="1"/>
      <max value="1"/>
      <base>
        <path value="NamingSystem.kind"/>
        <min value="1"/>
        <max value="1"/>
      </base>
      <type>
        <code value="code"/>
      </type>
      <condition value="nsd-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())"/>
        <source value="http://hl7.org/fhir/StructureDefinition/Element|5.0.0"/>
      </constraint>
      <mustSupport value="false"/>
      <isModifier value="false"/>
      <isSummary value="true"/>
      <binding>
        <extension url="http://hl7.org/fhir/StructureDefinition/elementdefinition-bindingName">
          <valueString value="NamingSystemType"/>
        </extension>
        <strength value="required"/>
        <description value="Identifies the purpose of the naming system."/>
        <valueSet value="http://hl7.org/fhir/ValueSet/namingsystem-type|5.0.0"/>
      </binding>
      <mapping>
        <identity value="w5"/>
        <map value="FiveWs.class"/>
      </mapping>
    </element>
    <element id="NamingSystem.experimental">
      <path value="NamingSystem.experimental"/>
      <short value="For testing purposes, not real usage"/>
      <definition value="A Boolean value to indicate that this naming system is authored for testing purposes (or education/evaluation/marketing) and is not intended to be used for genuine usage."/>
      <comment value="Allows filtering of naming systems that are appropriate for use versus not."/>
      <requirements value="Enables experimental content to be developed following the same lifecycle that would be used for a production-level naming system."/>
      <min value="0"/>
      <max value="1"/>
      <base>
        <path value="NamingSystem.experimental"/>
        <min value="0"/>
        <max value="1"/>
      </base>
      <type>
        <code value="boolean"/>
      </type>
      <meaningWhenMissing value="If absent, this resource is treated as though it is not experimental."/>
      <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|5.0.0"/>
      </constraint>
      <mustSupport value="false"/>
      <isModifier value="false"/>
      <isSummary value="true"/>
      <mapping>
        <identity value="w5"/>
        <map value="FiveWs.class"/>
      </mapping>
    </element>
    <element id="NamingSystem.date">
      <path value="NamingSystem.date"/>
      <short value="Date last changed"/>
      <definition value="The date  (and optionally time) when the naming system was last significantly changed. The date must change when the business version changes and it must change if the status code changes. In addition, it should change when the substantive content of the naming system changes."/>
      <comment value="The date is often not tracked until the resource is published, but may be present on draft content. Note that this is not the same as the resource last-modified-date, since the resource may be a secondary representation of the naming system. Additional specific dates may be added as extensions or be found by consulting Provenances associated with past versions of the resource.&#xA;&#xA;See guidance around (not) making local changes to elements [here](http://hl7.org/fhir/R5/canonicalresource.html#localization)."/>
      <alias value="Revision Date"/>
      <min value="1"/>
      <max value="1"/>
      <base>
        <path value="NamingSystem.date"/>
        <min value="1"/>
        <max value="1"/>
      </base>
      <type>
        <code value="dateTime"/>
      </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|5.0.0"/>
      </constraint>
      <mustSupport value="false"/>
      <isModifier value="false"/>
      <isSummary value="true"/>
      <mapping>
        <identity value="w5"/>
        <map value="FiveWs.recorded"/>
      </mapping>
    </element>
    <element id="NamingSystem.publisher">
      <extension url="http://hl7.org/fhir/StructureDefinition/elementdefinition-translatable">
        <valueBoolean value="true"/>
      </extension>
      <extension url="http://hl7.org/fhir/StructureDefinition/elementdefinition-translatable">
        <valueBoolean value="true"/>
      </extension>
      <path value="NamingSystem.publisher"/>
      <short value="Name of the publisher/steward (organization or individual)"/>
      <definition value="The name of the organization or individual responsible for the release and ongoing maintenance of the naming system."/>
      <comment value="Usually an organization but may be an individual. The publisher (or steward) of the naming system is the organization or individual primarily responsible for the maintenance and upkeep of the naming system. This is not necessarily the same individual or organization that developed and initially authored the content. The publisher is the primary point of contact for questions or issues with the naming system. This item SHOULD be populated unless the information is available from context."/>
      <requirements value="Helps establish the &quot;authority/credibility&quot; of the naming system.  May also allow for contact."/>
      <min value="0"/>
      <max value="1"/>
      <base>
        <path value="NamingSystem.publisher"/>
        <min value="0"/>
        <max value="1"/>
      </base>
      <type>
        <code value="string"/>
      </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|5.0.0"/>
      </constraint>
      <mustSupport value="false"/>
      <isModifier value="false"/>
      <isSummary value="true"/>
      <mapping>
        <identity value="w5"/>
        <map value="FiveWs.witness"/>
      </mapping>
    </element>
    <element id="NamingSystem.contact">
      <path value="NamingSystem.contact"/>
      <short value="Contact details for the publisher"/>
      <definition value="Contact details to assist a user in finding and communicating with the publisher."/>
      <comment value="May be a web site, an email address, a telephone number, etc.&#xA;&#xA;See guidance around (not) making local changes to elements [here](http://hl7.org/fhir/R5/canonicalresource.html#localization)."/>
      <min value="0"/>
      <max value="*"/>
      <base>
        <path value="NamingSystem.contact"/>
        <min value="0"/>
        <max value="*"/>
      </base>
      <type>
        <code value="ContactDetail"/>
      </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|5.0.0"/>
      </constraint>
      <mustSupport value="false"/>
      <isModifier value="false"/>
      <isSummary value="true"/>
    </element>
    <element id="NamingSystem.contact.id">
      <path value="NamingSystem.contact.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>
        <extension url="http://hl7.org/fhir/StructureDefinition/structuredefinition-fhir-type">
          <valueUrl value="id"/>
        </extension>
        <code value="http://hl7.org/fhirpath/System.String"/>
      </type>
      <condition value="ele-1"/>
      <isModifier value="false"/>
      <isSummary value="false"/>
      <mapping>
        <identity value="rim"/>
        <map value="n/a"/>
      </mapping>
    </element>
    <element id="NamingSystem.contact.extension">
      <path value="NamingSystem.contact.extension"/>
      <slicing>
        <discriminator>
          <type value="value"/>
          <path value="url"/>
        </discriminator>
        <description value="Extensions are always sliced by (at least) url"/>
        <ordered value="false"/>
        <rules value="open"/>
      </slicing>
      <short value="Extension"/>
      <definition value="An Extension"/>
      <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|5.0.0"/>
      </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|5.0.0"/>
      </constraint>
      <isModifier value="false"/>
      <isSummary value="false"/>
    </element>
    <element id="NamingSystem.contact.extension:name">
      <path value="NamingSystem.contact.extension"/>
      <sliceName value="name"/>
      <short value="DSTU2: Name of a individual to contact (new)"/>
      <definition value="DSTU2: `NamingSystem.contact.name` (new:string)"/>
      <comment value="Element `NamingSystem.contact.name` has a context of NamingSystem.contact based on following the parent source element upwards and mapping to `NamingSystem`.&#xA;Element `NamingSystem.contact.name` has no mapping targets in FHIR R5. Typically, this is because the element has been added (is a new element).&#xA;If there is no named individual, the telecom is for the organization as a whole."/>
      <min value="0"/>
      <max value="1"/>
      <base>
        <path value="Element.extension"/>
        <min value="0"/>
        <max value="*"/>
      </base>
      <type>
        <code value="Extension"/>
        <profile value="http://hl7.org/fhir/1.0/StructureDefinition/extension-NamingSystem.contact.name|0.1.0"/>
      </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|5.0.0"/>
      </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|5.0.0"/>
      </constraint>
      <isModifier value="false"/>
      <isSummary value="false"/>
    </element>
    <element id="NamingSystem.contact.extension:telecom">
      <path value="NamingSystem.contact.extension"/>
      <sliceName value="telecom"/>
      <short value="DSTU2: Contact details for individual or publisher (new)"/>
      <definition value="DSTU2: `NamingSystem.contact.telecom` (new:ContactPoint)"/>
      <comment value="Element `NamingSystem.contact.telecom` has a context of NamingSystem.contact based on following the parent source element upwards and mapping to `NamingSystem`.&#xA;Element `NamingSystem.contact.telecom` has no mapping targets in FHIR R5. Typically, this is because the element has been added (is a new element)."/>
      <min value="0"/>
      <max value="*"/>
      <base>
        <path value="Element.extension"/>
        <min value="0"/>
        <max value="*"/>
      </base>
      <type>
        <code value="Extension"/>
        <profile value="http://hl7.org/fhir/1.0/StructureDefinition/extension-NamingSystem.contact.telecom|0.1.0"/>
      </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|5.0.0"/>
      </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|5.0.0"/>
      </constraint>
      <isModifier value="false"/>
      <isSummary value="false"/>
    </element>
    <element id="NamingSystem.contact.name">
      <path value="NamingSystem.contact.name"/>
      <short value="Name of an individual to contact"/>
      <definition value="The name of an individual to contact."/>
      <comment value="If there is no named individual, the telecom information is for the organization as a whole."/>
      <min value="0"/>
      <max value="1"/>
      <base>
        <path value="ContactDetail.name"/>
        <min value="0"/>
        <max value="1"/>
      </base>
      <type>
        <code value="string"/>
      </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|5.0.0"/>
      </constraint>
      <isModifier value="false"/>
      <isSummary value="true"/>
    </element>
    <element id="NamingSystem.contact.telecom">
      <path value="NamingSystem.contact.telecom"/>
      <short value="Contact details for individual or organization"/>
      <definition value="The contact details for the individual (if a name was provided) or the organization."/>
      <min value="0"/>
      <max value="*"/>
      <base>
        <path value="ContactDetail.telecom"/>
        <min value="0"/>
        <max value="*"/>
      </base>
      <type>
        <code value="ContactPoint"/>
      </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|5.0.0"/>
      </constraint>
      <isModifier value="false"/>
      <isSummary value="true"/>
    </element>
    <element id="NamingSystem.responsible">
      <extension url="http://hl7.org/fhir/StructureDefinition/elementdefinition-translatable">
        <valueBoolean value="true"/>
      </extension>
      <extension url="http://hl7.org/fhir/StructureDefinition/elementdefinition-translatable">
        <valueBoolean value="true"/>
      </extension>
      <path value="NamingSystem.responsible"/>
      <short value="Who maintains system namespace?"/>
      <definition value="The name of the organization that is responsible for issuing identifiers or codes for this namespace and ensuring their non-collision."/>
      <comment value="This is the primary organization.  Responsibility for some aspects of a namespace may be delegated."/>
      <min value="0"/>
      <max value="1"/>
      <base>
        <path value="NamingSystem.responsible"/>
        <min value="0"/>
        <max value="1"/>
      </base>
      <type>
        <code value="string"/>
      </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|5.0.0"/>
      </constraint>
      <mustSupport value="false"/>
      <isModifier value="false"/>
      <isSummary value="false"/>
      <mapping>
        <identity value="w5"/>
        <map value="FiveWs.witness"/>
      </mapping>
    </element>
    <element id="NamingSystem.type">
      <path value="NamingSystem.type"/>
      <short value="e.g. driver,  provider,  patient, bank etc"/>
      <definition value="Categorizes a naming system for easier search by grouping related naming systems."/>
      <comment value="This will most commonly be used for identifier namespaces, but categories could potentially be useful for code systems and authorities as well."/>
      <min value="0"/>
      <max value="1"/>
      <base>
        <path value="NamingSystem.type"/>
        <min value="0"/>
        <max value="1"/>
      </base>
      <type>
        <code value="CodeableConcept"/>
      </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|5.0.0"/>
      </constraint>
      <mustSupport value="false"/>
      <isModifier value="false"/>
      <isSummary value="false"/>
      <binding>
        <extension url="http://hl7.org/fhir/StructureDefinition/elementdefinition-bindingName">
          <valueString value="NamingSystemIdentifierSystemType"/>
        </extension>
        <strength value="preferred"/>
        <description value="A coded type for an identifier that can be used to determine which identifier to use for a specific purpose."/>
        <valueSet value="http://hl7.org/fhir/ValueSet/namingsystem-identifier-system-type|5.0.0"/>
      </binding>
    </element>
    <element id="NamingSystem.description">
      <extension url="http://hl7.org/fhir/StructureDefinition/elementdefinition-translatable">
        <valueBoolean value="true"/>
      </extension>
      <extension url="http://hl7.org/fhir/StructureDefinition/elementdefinition-translatable">
        <valueBoolean value="true"/>
      </extension>
      <path value="NamingSystem.description"/>
      <short value="Natural language description of the naming system"/>
      <definition value="A free text natural language description of the naming system from a consumer's perspective. Details about what the namespace identifies including scope, granularity, version labeling, etc."/>
      <comment value="This description can be used to capture details such as comments about misuse, instructions for clinical use and interpretation, literature references, examples from the paper world, etc. It is not a rendering of the naming system as conveyed in the 'text' field of the resource itself. This item SHOULD be populated unless the information is available from context (e.g. the language of the naming system is presumed to be the predominant language in the place the naming system was created)."/>
      <min value="0"/>
      <max value="1"/>
      <base>
        <path value="NamingSystem.description"/>
        <min value="0"/>
        <max value="1"/>
      </base>
      <type>
        <code value="markdown"/>
      </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|5.0.0"/>
      </constraint>
      <mustSupport value="false"/>
      <isModifier value="false"/>
      <isSummary value="false"/>
    </element>
    <element id="NamingSystem.useContext">
      <path value="NamingSystem.useContext"/>
      <short value="The context that the content is intended to support"/>
      <definition value="The content was developed with a focus and intent of supporting the contexts that are listed. These contexts may be general categories (gender, age, ...) or may be references to specific programs (insurance plans, studies, ...) and may be used to assist with indexing and searching for appropriate naming system instances."/>
      <comment value="When multiple useContexts are specified, there is no expectation that all or any of the contexts apply."/>
      <requirements value="Assist in searching for appropriate content."/>
      <min value="0"/>
      <max value="*"/>
      <base>
        <path value="NamingSystem.useContext"/>
        <min value="0"/>
        <max value="*"/>
      </base>
      <type>
        <code value="UsageContext"/>
      </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|5.0.0"/>
      </constraint>
      <mustSupport value="false"/>
      <isModifier value="false"/>
      <isSummary value="true"/>
    </element>
    <element id="NamingSystem.jurisdiction">
      <path value="NamingSystem.jurisdiction"/>
      <short value="Intended jurisdiction for naming system (if applicable)"/>
      <definition value="A legal or geographic region in which the naming system is intended to be used."/>
      <comment value="It may be possible for the naming system to be used in jurisdictions other than those for which it was originally designed or intended.&#xA;&#xA;DEPRECATION NOTE: For consistency, implementations are encouraged to migrate to using the new 'jurisdiction' code in the useContext element.  (I.e. useContext.code indicating http://terminology.hl7.org/CodeSystem/usage-context-type#jurisdiction and useContext.valueCodeableConcept indicating the jurisdiction.)"/>
      <min value="0"/>
      <max value="*"/>
      <base>
        <path value="NamingSystem.jurisdiction"/>
        <min value="0"/>
        <max value="*"/>
      </base>
      <type>
        <code value="CodeableConcept"/>
      </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|5.0.0"/>
      </constraint>
      <mustSupport value="false"/>
      <isModifier value="false"/>
      <isSummary value="true"/>
      <binding>
        <extension url="http://hl7.org/fhir/StructureDefinition/elementdefinition-bindingName">
          <valueString value="Jurisdiction"/>
        </extension>
        <strength value="extensible"/>
        <description value="Countries and regions within which this artifact is targeted for use."/>
        <valueSet value="http://hl7.org/fhir/ValueSet/jurisdiction|5.0.0"/>
      </binding>
    </element>
    <element id="NamingSystem.purpose">
      <extension url="http://hl7.org/fhir/StructureDefinition/elementdefinition-translatable">
        <valueBoolean value="true"/>
      </extension>
      <extension url="http://hl7.org/fhir/StructureDefinition/elementdefinition-translatable">
        <valueBoolean value="true"/>
      </extension>
      <path value="NamingSystem.purpose"/>
      <short value="Why this naming system is defined"/>
      <definition value="Explanation of why this naming system is needed and why it has been designed as it has."/>
      <comment value="This element does not describe the usage of the code system. Instead, it provides traceability of ''why'' the resource is either needed or ''why'' it is defined as it is.  This may be used to point to source materials or specifications that drove the structure of this code system."/>
      <min value="0"/>
      <max value="1"/>
      <base>
        <path value="NamingSystem.purpose"/>
        <min value="0"/>
        <max value="1"/>
      </base>
      <type>
        <code value="markdown"/>
      </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|5.0.0"/>
      </constraint>
      <mustSupport value="false"/>
      <isModifier value="false"/>
      <isSummary value="false"/>
      <mapping>
        <identity value="w5"/>
        <map value="FiveWs.why[x]"/>
      </mapping>
      <mapping>
        <identity value="objimpl"/>
        <map value="no-gen-base"/>
      </mapping>
    </element>
    <element id="NamingSystem.copyright">
      <extension url="http://hl7.org/fhir/StructureDefinition/elementdefinition-translatable">
        <valueBoolean value="true"/>
      </extension>
      <extension url="http://hl7.org/fhir/StructureDefinition/elementdefinition-translatable">
        <valueBoolean value="true"/>
      </extension>
      <path value="NamingSystem.copyright"/>
      <short value="Use and/or publishing restrictions"/>
      <definition value="A copyright statement relating to the naming system and/or its contents. Copyright statements are generally legal restrictions on the use and publishing of the naming system."/>
      <requirements value="Consumers must be able to determine any legal restrictions on the use of the naming system and/or its content."/>
      <alias value="License"/>
      <alias value="Restrictions"/>
      <min value="0"/>
      <max value="1"/>
      <base>
        <path value="NamingSystem.copyright"/>
        <min value="0"/>
        <max value="1"/>
      </base>
      <type>
        <code value="markdown"/>
      </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|5.0.0"/>
      </constraint>
      <mustSupport value="false"/>
      <isModifier value="false"/>
      <isSummary value="false"/>
      <mapping>
        <identity value="objimpl"/>
        <map value="no-gen-base"/>
      </mapping>
    </element>
    <element id="NamingSystem.copyrightLabel">
      <extension url="http://hl7.org/fhir/StructureDefinition/elementdefinition-translatable">
        <valueBoolean value="true"/>
      </extension>
      <extension url="http://hl7.org/fhir/StructureDefinition/elementdefinition-translatable">
        <valueBoolean value="true"/>
      </extension>
      <path value="NamingSystem.copyrightLabel"/>
      <short value="Copyright holder and year(s)"/>
      <definition value="A short string (&lt;50 characters), suitable for inclusion in a page footer that identifies the copyright holder, effective period, and optionally whether rights are resctricted. (e.g. 'All rights reserved', 'Some rights reserved')."/>
      <comment value="The (c) symbol should NOT be included in this string. It will be added by software when rendering the notation. Full details about licensing, restrictions, warrantees, etc. goes in the more general 'copyright' element."/>
      <requirements value="Defines the content expected to be rendered in all representations of the artifact."/>
      <min value="0"/>
      <max value="1"/>
      <base>
        <path value="NamingSystem.copyrightLabel"/>
        <min value="0"/>
        <max value="1"/>
      </base>
      <type>
        <code value="string"/>
      </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|5.0.0"/>
      </constraint>
      <mustSupport value="false"/>
      <isModifier value="false"/>
      <isSummary value="false"/>
    </element>
    <element id="NamingSystem.approvalDate">
      <path value="NamingSystem.approvalDate"/>
      <short value="When the NamingSystem was approved by publisher"/>
      <definition value="The date on which the resource content was approved by the publisher. Approval happens once when the content is officially approved for usage."/>
      <comment value="The 'date' element may be more recent than the approval date because of minor changes or editorial corrections.&#xA;&#xA;See guidance around (not) making local changes to elements [here](http://hl7.org/fhir/R5/canonicalresource.html#localization)."/>
      <min value="0"/>
      <max value="1"/>
      <base>
        <path value="NamingSystem.approvalDate"/>
        <min value="0"/>
        <max value="1"/>
      </base>
      <type>
        <code value="date"/>
      </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|5.0.0"/>
      </constraint>
      <mustSupport value="false"/>
      <isModifier value="false"/>
      <isSummary value="false"/>
      <mapping>
        <identity value="objimpl"/>
        <map value="no-gen-base"/>
      </mapping>
    </element>
    <element id="NamingSystem.lastReviewDate">
      <path value="NamingSystem.lastReviewDate"/>
      <short value="When the NamingSystem was last reviewed by the publisher"/>
      <definition value="The date on which the resource content was last reviewed. Review happens periodically after approval but does not change the original approval date."/>
      <comment value="If specified, this date follows the original approval date.&#xA;&#xA;See guidance around (not) making local changes to elements [here](http://hl7.org/fhir/R5/canonicalresource.html#localization)."/>
      <requirements value="Gives a sense of how &quot;current&quot; the content is.  Resources that have not been reviewed in a long time may have a risk of being less appropriate/relevant."/>
      <min value="0"/>
      <max value="1"/>
      <base>
        <path value="NamingSystem.lastReviewDate"/>
        <min value="0"/>
        <max value="1"/>
      </base>
      <type>
        <code value="date"/>
      </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|5.0.0"/>
      </constraint>
      <mustSupport value="false"/>
      <isModifier value="false"/>
      <isSummary value="false"/>
      <mapping>
        <identity value="objimpl"/>
        <map value="no-gen-base"/>
      </mapping>
    </element>
    <element id="NamingSystem.effectivePeriod">
      <path value="NamingSystem.effectivePeriod"/>
      <short value="When the NamingSystem is expected to be used"/>
      <definition value="The period during which the NamingSystem content was or is planned to be in active use."/>
      <comment value="The effective period for a NamingSystem determines when the content is applicable for usage and is independent of publication and review dates. For example, a NamingSystem intended to be used for the year 2016 might be published in 2015.&#xA;&#xA;See guidance around (not) making local changes to elements [here](http://hl7.org/fhir/R5/canonicalresource.html#localization)."/>
      <requirements value="Allows establishing a transition before a resource comes into effect and also allows for a sunsetting process when new versions of the NamingSystem are or are expected to be used instead."/>
      <min value="0"/>
      <max value="1"/>
      <base>
        <path value="NamingSystem.effectivePeriod"/>
        <min value="0"/>
        <max value="1"/>
      </base>
      <type>
        <code value="Period"/>
      </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|5.0.0"/>
      </constraint>
      <mustSupport value="false"/>
      <isModifier value="false"/>
      <isSummary value="true"/>
      <mapping>
        <identity value="objimpl"/>
        <map value="no-gen-base"/>
      </mapping>
    </element>
    <element id="NamingSystem.topic">
      <path value="NamingSystem.topic"/>
      <short value="E.g. Education, Treatment, Assessment, etc"/>
      <definition value="Descriptions related to the content of the NamingSystem. Topics provide a high-level categorization as well as keywords for the NamingSystem that can be useful for filtering and searching."/>
      <comment value="DEPRECATION NOTE: For consistency, implementations are encouraged to migrate to using the new 'topic' code in the useContext element.  (I.e. useContext.code indicating http://terminology.hl7.org/CodeSystem/usage-context-type#topic and useContext.valueCodeableConcept indicating the topic)"/>
      <requirements value="Repositories must be able to determine how to categorize the NamingSystem so that it can be found by topical and keyword searches."/>
      <min value="0"/>
      <max value="*"/>
      <base>
        <path value="NamingSystem.topic"/>
        <min value="0"/>
        <max value="*"/>
      </base>
      <type>
        <code value="CodeableConcept"/>
      </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|5.0.0"/>
      </constraint>
      <mustSupport value="false"/>
      <isModifier value="false"/>
      <isSummary value="false"/>
      <binding>
        <extension url="http://hl7.org/fhir/StructureDefinition/elementdefinition-bindingName">
          <valueString value="DefinitionTopic"/>
        </extension>
        <strength value="example"/>
        <valueSet value="http://hl7.org/fhir/ValueSet/definition-topic|5.0.0"/>
      </binding>
    </element>
    <element id="NamingSystem.author">
      <path value="NamingSystem.author"/>
      <short value="Who authored the CodeSystem"/>
      <definition value="An individiual or organization primarily involved in the creation and maintenance of the NamingSystem."/>
      <min value="0"/>
      <max value="*"/>
      <base>
        <path value="NamingSystem.author"/>
        <min value="0"/>
        <max value="*"/>
      </base>
      <type>
        <code value="ContactDetail"/>
      </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|5.0.0"/>
      </constraint>
      <mustSupport value="false"/>
      <isModifier value="false"/>
      <isSummary value="false"/>
    </element>
    <element id="NamingSystem.editor">
      <path value="NamingSystem.editor"/>
      <short value="Who edited the NamingSystem"/>
      <definition value="An individual or organization primarily responsible for internal coherence of the NamingSystem."/>
      <min value="0"/>
      <max value="*"/>
      <base>
        <path value="NamingSystem.editor"/>
        <min value="0"/>
        <max value="*"/>
      </base>
      <type>
        <code value="ContactDetail"/>
      </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|5.0.0"/>
      </constraint>
      <mustSupport value="false"/>
      <isModifier value="false"/>
      <isSummary value="false"/>
    </element>
    <element id="NamingSystem.reviewer">
      <path value="NamingSystem.reviewer"/>
      <short value="Who reviewed the NamingSystem"/>
      <definition value="An individual or organization asserted by the publisher to be primarily responsible for review of some aspect of the NamingSystem."/>
      <comment value="See guidance around (not) making local changes to elements [here](http://hl7.org/fhir/R5/canonicalresource.html#localization)."/>
      <min value="0"/>
      <max value="*"/>
      <base>
        <path value="NamingSystem.reviewer"/>
        <min value="0"/>
        <max value="*"/>
      </base>
      <type>
        <code value="ContactDetail"/>
      </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|5.0.0"/>
      </constraint>
      <mustSupport value="false"/>
      <isModifier value="false"/>
      <isSummary value="false"/>
    </element>
    <element id="NamingSystem.endorser">
      <path value="NamingSystem.endorser"/>
      <short value="Who endorsed the NamingSystem"/>
      <definition value="An individual or organization asserted by the publisher to be responsible for officially endorsing the NamingSystem for use in some setting."/>
      <comment value="See guidance around (not) making local changes to elements [here](http://hl7.org/fhir/R5/canonicalresource.html#localization)."/>
      <min value="0"/>
      <max value="*"/>
      <base>
        <path value="NamingSystem.endorser"/>
        <min value="0"/>
        <max value="*"/>
      </base>
      <type>
        <code value="ContactDetail"/>
      </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|5.0.0"/>
      </constraint>
      <mustSupport value="false"/>
      <isModifier value="false"/>
      <isSummary value="false"/>
    </element>
    <element id="NamingSystem.relatedArtifact">
      <path value="NamingSystem.relatedArtifact"/>
      <short value="Additional documentation, citations, etc"/>
      <definition value="Related artifacts such as additional documentation, justification, dependencies, bibliographic references, and predecessor and successor artifacts."/>
      <comment value="Each related artifact is either an attachment, or a reference to another resource, but not both."/>
      <requirements value="A NamingSystem must be able to provide enough information for consumers of the content (and/or interventions or results produced by the content) to be able to determine and understand the justification for and evidence in support of the content."/>
      <min value="0"/>
      <max value="*"/>
      <base>
        <path value="NamingSystem.relatedArtifact"/>
        <min value="0"/>
        <max value="*"/>
      </base>
      <type>
        <code value="RelatedArtifact"/>
      </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|5.0.0"/>
      </constraint>
      <mustSupport value="false"/>
      <isModifier value="false"/>
      <isSummary value="false"/>
    </element>
    <element id="NamingSystem.usage">
      <extension url="http://hl7.org/fhir/StructureDefinition/elementdefinition-translatable">
        <valueBoolean value="true"/>
      </extension>
      <extension url="http://hl7.org/fhir/StructureDefinition/elementdefinition-translatable">
        <valueBoolean value="true"/>
      </extension>
      <path value="NamingSystem.usage"/>
      <short value="How/where is it used"/>
      <definition value="Provides guidance on the use of the namespace, including the handling of formatting characters, use of upper vs. lower case, etc."/>
      <min value="0"/>
      <max value="1"/>
      <base>
        <path value="NamingSystem.usage"/>
        <min value="0"/>
        <max value="1"/>
      </base>
      <type>
        <code value="string"/>
      </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|5.0.0"/>
      </constraint>
      <mustSupport value="false"/>
      <isModifier value="false"/>
      <isSummary value="false"/>
    </element>
    <element id="NamingSystem.uniqueId">
      <path value="NamingSystem.uniqueId"/>
      <short value="Unique identifiers used for system"/>
      <definition value="Indicates how the system may be identified when referenced in electronic exchange."/>
      <comment value="Multiple identifiers may exist, either due to duplicate registration, regional rules, needs of different communication technologies, etc."/>
      <min value="1"/>
      <max value="*"/>
      <base>
        <path value="NamingSystem.uniqueId"/>
        <min value="1"/>
        <max value="*"/>
      </base>
      <type>
        <code value="BackboneElement"/>
      </type>
      <condition value="nsd-1"/>
      <condition value="nsd-2"/>
      <condition value="nsd-3"/>
      <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|5.0.0"/>
      </constraint>
      <mustSupport value="false"/>
      <isModifier value="false"/>
      <isSummary value="true"/>
    </element>
    <element id="NamingSystem.uniqueId.id">
      <path value="NamingSystem.uniqueId.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>
        <extension url="http://hl7.org/fhir/StructureDefinition/structuredefinition-fhir-type">
          <valueUrl value="string"/>
        </extension>
        <code value="http://hl7.org/fhirpath/System.String"/>
      </type>
      <condition value="ele-1"/>
      <isModifier value="false"/>
      <isSummary value="false"/>
      <mapping>
        <identity value="rim"/>
        <map value="n/a"/>
      </mapping>
    </element>
    <element id="NamingSystem.uniqueId.extension">
      <path value="NamingSystem.uniqueId.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 element. 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|5.0.0"/>
      </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|5.0.0"/>
      </constraint>
      <isModifier value="false"/>
      <isSummary value="false"/>
      <mapping>
        <identity value="rim"/>
        <map value="n/a"/>
      </mapping>
    </element>
    <element id="NamingSystem.uniqueId.modifierExtension">
      <path value="NamingSystem.uniqueId.modifierExtension"/>
      <short value="Extensions that cannot be ignored even if unrecognized"/>
      <definition value="May be used to represent additional information that is not part of the basic definition of the element and that modifies the understanding of the element in which it is contained and/or the understanding of the containing element's descendants. Usually modifier elements provide negation or qualification. 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. Applications processing a resource are required to check for modifier extensions.&#xA;&#xA;Modifier extensions SHALL NOT change the meaning of any elements on Resource or DomainResource (including cannot change the meaning of modifierExtension itself)."/>
      <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."/>
      <requirements value="Modifier extensions allow for extensions that *cannot* be safely ignored to be clearly distinguished from the vast majority of extensions which can be safely ignored.  This promotes interoperability by eliminating the need for implementers to prohibit the presence of extensions. For further information, see the [definition of modifier extensions](http://hl7.org/fhir/R5/extensibility.html#modifierExtension)."/>
      <alias value="extensions"/>
      <alias value="user content"/>
      <alias value="modifiers"/>
      <min value="0"/>
      <max value="*"/>
      <base>
        <path value="BackboneElement.modifierExtension"/>
        <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|5.0.0"/>
      </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|5.0.0"/>
      </constraint>
      <isModifier value="true"/>
      <isModifierReason value="Modifier extensions are expected to modify the meaning or interpretation of the element that contains them"/>
      <isSummary value="true"/>
      <mapping>
        <identity value="rim"/>
        <map value="N/A"/>
      </mapping>
    </element>
    <element id="NamingSystem.uniqueId.type">
      <path value="NamingSystem.uniqueId.type"/>
      <short value="oid | uuid | uri | iri-stem | v2csmnemonic | other"/>
      <definition value="Identifies the unique identifier scheme used for this particular identifier."/>
      <comment value="Different identifier types may be used in different types of communications (OIDs for v3, URIs for FHIR, etc.).  Other includes RUIDs from v3, standard v2 code name strings, etc. Preferred identifiers for the same identifier type SHOULD NOT overlap by period."/>
      <min value="1"/>
      <max value="1"/>
      <base>
        <path value="NamingSystem.uniqueId.type"/>
        <min value="1"/>
        <max value="1"/>
      </base>
      <type>
        <code value="code"/>
      </type>
      <condition value="nsd-1"/>
      <condition value="nsd-2"/>
      <condition value="nsd-3"/>
      <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|5.0.0"/>
      </constraint>
      <mustSupport value="false"/>
      <isModifier value="false"/>
      <isSummary value="true"/>
      <binding>
        <extension url="http://hl7.org/fhir/StructureDefinition/elementdefinition-bindingName">
          <valueString value="NamingSystemIdentifierType"/>
        </extension>
        <strength value="required"/>
        <description value="Identifies the style of unique identifier used to identify a namespace."/>
        <valueSet value="http://hl7.org/fhir/ValueSet/namingsystem-identifier-type|5.0.0"/>
      </binding>
    </element>
    <element id="NamingSystem.uniqueId.type.id">
      <path value="NamingSystem.uniqueId.type.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="NamingSystem.uniqueId.type.extension">
      <path value="NamingSystem.uniqueId.type.extension"/>
      <slicing>
        <discriminator>
          <type value="value"/>
          <path value="url"/>
        </discriminator>
        <ordered value="false"/>
        <rules value="open"/>
      </slicing>
      <short value="Extension"/>
      <definition value="An Extension"/>
      <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|5.0.0"/>
      </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|5.0.0"/>
      </constraint>
      <isModifier value="false"/>
      <isSummary value="false"/>
    </element>
    <element id="NamingSystem.uniqueId.type.extension:type">
      <path value="NamingSystem.uniqueId.type.extension"/>
      <sliceName value="type"/>
      <short value="DSTU2: oid | uuid | uri | other additional codes"/>
      <definition value="DSTU2: `NamingSystem.uniqueId.type` additional codes"/>
      <comment value="Element `NamingSystem.uniqueId.type` is mapped to FHIR R5 element `NamingSystem.uniqueId.type` as `RelatedTo`.&#xA;The mappings for `NamingSystem.uniqueId.type` do not allow expression of the necessary codes, per the bindings on the source and target.&#xA;Different identifier types may be used in different types of communications (OIDs for v3, URIs for FHIR, etc.).  Other includes RUIDs from v3, standard v2 code name strings, etc."/>
      <min value="0"/>
      <max value="1"/>
      <base>
        <path value="Element.extension"/>
        <min value="0"/>
        <max value="*"/>
      </base>
      <type>
        <code value="Extension"/>
        <profile value="http://hl7.org/fhir/1.0/StructureDefinition/extension-NamingSystem.uniqueId.type|0.1.0"/>
      </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|5.0.0"/>
      </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|5.0.0"/>
      </constraint>
      <isModifier value="false"/>
      <isSummary value="false"/>
    </element>
    <element id="NamingSystem.uniqueId.type.value">
      <path value="NamingSystem.uniqueId.type.value"/>
      <representation value="xmlAttr"/>
      <short value="Primitive value for code"/>
      <definition value="Primitive value for code"/>
      <min value="0"/>
      <max value="1"/>
      <base>
        <path value="string.value"/>
        <min value="0"/>
        <max value="1"/>
      </base>
      <type>
        <extension url="http://hl7.org/fhir/StructureDefinition/structuredefinition-fhir-type">
          <valueUrl value="code"/>
        </extension>
        <extension url="http://hl7.org/fhir/StructureDefinition/regex">
          <valueString value="[^\s]+( [^\s]+)*"/>
        </extension>
        <code value="http://hl7.org/fhirpath/System.String"/>
      </type>
      <isModifier value="false"/>
      <isSummary value="false"/>
    </element>
    <element id="NamingSystem.uniqueId.value">
      <path value="NamingSystem.uniqueId.value"/>
      <short value="The unique identifier"/>
      <definition value="The string that should be sent over the wire to identify the code system or identifier system."/>
      <comment value="If the value is a URI intended for use as FHIR system identifier, the URI should not contain &quot;\&quot; or &quot;?&quot; or &quot;,&quot; since this makes escaping very difficult."/>
      <min value="1"/>
      <max value="1"/>
      <base>
        <path value="NamingSystem.uniqueId.value"/>
        <min value="1"/>
        <max value="1"/>
      </base>
      <type>
        <code value="string"/>
      </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|5.0.0"/>
      </constraint>
      <mustSupport value="false"/>
      <isModifier value="false"/>
      <isSummary value="true"/>
      <mapping>
        <identity value="w5"/>
        <map value="FiveWs.identifier"/>
      </mapping>
    </element>
    <element id="NamingSystem.uniqueId.preferred">
      <path value="NamingSystem.uniqueId.preferred"/>
      <short value="Is this the id that should be used for this type"/>
      <definition value="Indicates whether this identifier is the &quot;preferred&quot; identifier of this type."/>
      <min value="0"/>
      <max value="1"/>
      <base>
        <path value="NamingSystem.uniqueId.preferred"/>
        <min value="0"/>
        <max value="1"/>
      </base>
      <type>
        <code value="boolean"/>
      </type>
      <meaningWhenMissing value="If there are multiple ids, and one is labeled &quot;preferred&quot;, then the assumption is that the others are not preferred. In the absence of any id marked as preferred, no inference can be drawn"/>
      <condition value="nsd-2"/>
      <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|5.0.0"/>
      </constraint>
      <mustSupport value="false"/>
      <isModifier value="false"/>
      <isSummary value="false"/>
    </element>
    <element id="NamingSystem.uniqueId.comment">
      <path value="NamingSystem.uniqueId.comment"/>
      <short value="Notes about identifier usage"/>
      <definition value="Notes about the past or intended usage of this identifier."/>
      <comment value="e.g. &quot;must be used in Germany&quot; or &quot;was initially published in error with this value&quot;."/>
      <min value="0"/>
      <max value="1"/>
      <base>
        <path value="NamingSystem.uniqueId.comment"/>
        <min value="0"/>
        <max value="1"/>
      </base>
      <type>
        <code value="string"/>
      </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|5.0.0"/>
      </constraint>
      <mustSupport value="false"/>
      <isModifier value="false"/>
      <isSummary value="false"/>
    </element>
    <element id="NamingSystem.uniqueId.period">
      <path value="NamingSystem.uniqueId.period"/>
      <short value="When is identifier valid?"/>
      <definition value="Identifies the period of time over which this identifier is considered appropriate to refer to the naming system.  Outside of this window, the identifier might be non-deterministic."/>
      <comment value="Within a registry, a given identifier should only be &quot;active&quot; for a single namespace at a time.  (Ideally, an identifier should only ever be associated with a single namespace across all time).&#xA;&#xA;The nuance of identifier deprecation is not represented with a separate element. When a determination is made that an identifier should not be used, the validity period end date is updated with the date the identifier is deemed to be deprecated. The identifier should no longer be used once the period end date is reached."/>
      <min value="0"/>
      <max value="1"/>
      <base>
        <path value="NamingSystem.uniqueId.period"/>
        <min value="0"/>
        <max value="1"/>
      </base>
      <type>
        <code value="Period"/>
      </type>
      <condition value="nsd-3"/>
      <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|5.0.0"/>
      </constraint>
      <mustSupport value="false"/>
      <isModifier value="false"/>
      <isSummary value="false"/>
    </element>
    <element id="NamingSystem.uniqueId.period.id">
      <path value="NamingSystem.uniqueId.period.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>
        <extension url="http://hl7.org/fhir/StructureDefinition/structuredefinition-fhir-type">
          <valueUrl value="id"/>
        </extension>
        <code value="http://hl7.org/fhirpath/System.String"/>
      </type>
      <condition value="ele-1"/>
      <isModifier value="false"/>
      <isSummary value="false"/>
      <mapping>
        <identity value="rim"/>
        <map value="n/a"/>
      </mapping>
    </element>
    <element id="NamingSystem.uniqueId.period.extension">
      <path value="NamingSystem.uniqueId.period.extension"/>
      <slicing>
        <discriminator>
          <type value="value"/>
          <path value="url"/>
        </discriminator>
        <description value="Extensions are always sliced by (at least) url"/>
        <ordered value="false"/>
        <rules value="open"/>
      </slicing>
      <short value="Extension"/>
      <definition value="An Extension"/>
      <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|5.0.0"/>
      </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|5.0.0"/>
      </constraint>
      <isModifier value="false"/>
      <isSummary value="false"/>
    </element>
    <element id="NamingSystem.uniqueId.period.extension:period">
      <path value="NamingSystem.uniqueId.period.extension"/>
      <sliceName value="period"/>
      <short value="DSTU2: period additional types"/>
      <definition value="DSTU2: `NamingSystem.uniqueId.period` additional types (Period) additional types from child elements (end, start)"/>
      <comment value="Element `NamingSystem.uniqueId.period` is mapped to FHIR R5 element `NamingSystem.uniqueId.period` as `SourceIsBroaderThanTarget`.&#xA;The mappings for `NamingSystem.uniqueId.period` do not cover the following types: Period.&#xA;The mappings for `NamingSystem.uniqueId.period` do not cover the following types based on type expansion: end, start.&#xA;Within a registry, a given identifier should only be &quot;active&quot; for a single namespace at a time.  (Ideally, an identifier should only ever be associated with a single namespace across all time)."/>
      <min value="0"/>
      <max value="1"/>
      <base>
        <path value="Element.extension"/>
        <min value="0"/>
        <max value="*"/>
      </base>
      <type>
        <code value="Extension"/>
        <profile value="http://hl7.org/fhir/1.0/StructureDefinition/extension-NamingSystem.uniqueId.period|0.1.0"/>
      </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|5.0.0"/>
      </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|5.0.0"/>
      </constraint>
      <isModifier value="false"/>
      <isSummary value="false"/>
    </element>
    <element id="NamingSystem.uniqueId.period.start">
      <path value="NamingSystem.uniqueId.period.start"/>
      <short value="Starting time with inclusive boundary"/>
      <definition value="The start of the period. The boundary is inclusive."/>
      <comment value="If the low element is missing, the meaning is that the low boundary is not known."/>
      <min value="0"/>
      <max value="1"/>
      <base>
        <path value="Period.start"/>
        <min value="0"/>
        <max value="1"/>
      </base>
      <type>
        <code value="dateTime"/>
      </type>
      <condition value="per-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())"/>
        <source value="http://hl7.org/fhir/StructureDefinition/Element|5.0.0"/>
      </constraint>
      <isModifier value="false"/>
      <isSummary value="true"/>
      <mapping>
        <identity value="v2"/>
        <map value="DR.1"/>
      </mapping>
      <mapping>
        <identity value="rim"/>
        <map value="./low"/>
      </mapping>
    </element>
    <element id="NamingSystem.uniqueId.period.end">
      <path value="NamingSystem.uniqueId.period.end"/>
      <short value="End time with inclusive boundary, if not ongoing"/>
      <definition value="The end of the period. If the end of the period is missing, it means no end was known or planned at the time the instance was created. The start may be in the past, and the end date in the future, which means that period is expected/planned to end at that time."/>
      <comment value="The end value includes any matching date/time. i.e. 2012-02-03T10:00:00 is in a period that has an end value of 2012-02-03."/>
      <min value="0"/>
      <max value="1"/>
      <base>
        <path value="Period.end"/>
        <min value="0"/>
        <max value="1"/>
      </base>
      <type>
        <code value="dateTime"/>
      </type>
      <meaningWhenMissing value="If the end of the period is missing, it means that the period is ongoing"/>
      <condition value="per-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())"/>
        <source value="http://hl7.org/fhir/StructureDefinition/Element|5.0.0"/>
      </constraint>
      <isModifier value="false"/>
      <isSummary value="true"/>
      <mapping>
        <identity value="v2"/>
        <map value="DR.2"/>
      </mapping>
      <mapping>
        <identity value="rim"/>
        <map value="./high"/>
      </mapping>
    </element>
    <element id="NamingSystem.uniqueId.authoritative">
      <path value="NamingSystem.uniqueId.authoritative"/>
      <short value="Whether the identifier is authoritative"/>
      <definition value="Indicates whether this identifier ie endorsed by the official owner of the associated naming system."/>
      <min value="0"/>
      <max value="1"/>
      <base>
        <path value="NamingSystem.uniqueId.authoritative"/>
        <min value="0"/>
        <max value="1"/>
      </base>
      <type>
        <code value="boolean"/>
      </type>
      <condition value="nsd-3"/>
      <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|5.0.0"/>
      </constraint>
      <mustSupport value="false"/>
      <isModifier value="false"/>
      <isSummary value="false"/>
    </element>
  </snapshot>
  <differential>
    <element id="NamingSystem">
      <path value="NamingSystem"/>
    </element>
    <element id="NamingSystem.meta.extension">
      <path value="NamingSystem.meta.extension"/>
      <slicing>
        <discriminator>
          <type value="value"/>
          <path value="url"/>
        </discriminator>
        <ordered value="false"/>
        <rules value="open"/>
      </slicing>
      <min value="0"/>
      <max value="*"/>
    </element>
    <element id="NamingSystem.meta.extension:meta">
      <path value="NamingSystem.meta.extension"/>
      <sliceName value="meta"/>
      <short value="DSTU2: meta additional types"/>
      <definition value="DSTU2: `NamingSystem.meta` additional types (Meta) additional types from child elements (lastUpdated, profile, security, tag, versionId)"/>
      <comment value="Element `NamingSystem.meta` is mapped to FHIR R5 element `NamingSystem.meta` as `SourceIsBroaderThanTarget`.&#xA;The mappings for `NamingSystem.meta` do not cover the following types: Meta.&#xA;The mappings for `NamingSystem.meta` do not cover the following types based on type expansion: lastUpdated, profile, security, tag, versionId."/>
      <min value="0"/>
      <max value="1"/>
      <base>
        <path value="DomainResource.extension"/>
        <min value="0"/>
        <max value="*"/>
      </base>
      <type>
        <code value="Extension"/>
        <profile value="http://hl7.org/fhir/1.0/StructureDefinition/extension-NamingSystem.meta|0.1.0"/>
      </type>
    </element>
    <element id="NamingSystem.text.extension">
      <path value="NamingSystem.text.extension"/>
      <slicing>
        <discriminator>
          <type value="value"/>
          <path value="url"/>
        </discriminator>
        <ordered value="false"/>
        <rules value="open"/>
      </slicing>
      <min value="0"/>
      <max value="*"/>
    </element>
    <element id="NamingSystem.text.extension:text">
      <path value="NamingSystem.text.extension"/>
      <sliceName value="text"/>
      <short value="DSTU2: text additional types"/>
      <definition value="DSTU2: `NamingSystem.text` additional types (Narrative) additional types from child elements (div, status)"/>
      <comment value="Element `NamingSystem.text` is mapped to FHIR R5 element `NamingSystem.text` as `SourceIsBroaderThanTarget`.&#xA;The mappings for `NamingSystem.text` do not cover the following types: Narrative.&#xA;The mappings for `NamingSystem.text` do not cover the following types based on type expansion: div, status.&#xA;Contained resources do not have narrative. Resources that are not contained SHOULD have a narrative."/>
      <min value="0"/>
      <max value="1"/>
      <base>
        <path value="DomainResource.extension"/>
        <min value="0"/>
        <max value="*"/>
      </base>
      <type>
        <code value="Extension"/>
        <profile value="http://hl7.org/fhir/1.0/StructureDefinition/extension-NamingSystem.text|0.1.0"/>
      </type>
    </element>
    <element id="NamingSystem.extension">
      <path value="NamingSystem.extension"/>
      <slicing>
        <discriminator>
          <type value="value"/>
          <path value="url"/>
        </discriminator>
        <ordered value="false"/>
        <rules value="open"/>
      </slicing>
      <min value="0"/>
      <max value="*"/>
    </element>
    <element id="NamingSystem.extension:replacedBy">
      <path value="NamingSystem.extension"/>
      <sliceName value="replacedBy"/>
      <short value="DSTU2: Use this instead (new)"/>
      <definition value="DSTU2: `NamingSystem.replacedBy` (new:Reference(NamingSystem))"/>
      <comment value="Element `NamingSystem.replacedBy` has a context of NamingSystem based on following the parent source element upwards and mapping to `NamingSystem`.&#xA;Element `NamingSystem.replacedBy` has no mapping targets in FHIR R5. Typically, this is because the element has been added (is a new element)."/>
      <min value="0"/>
      <max value="1"/>
      <base>
        <path value="DomainResource.extension"/>
        <min value="0"/>
        <max value="*"/>
      </base>
      <type>
        <code value="Extension"/>
        <profile value="http://hl7.org/fhir/1.0/StructureDefinition/extension-NamingSystem.replacedBy|0.1.0"/>
      </type>
    </element>
    <element id="NamingSystem.contact.extension">
      <path value="NamingSystem.contact.extension"/>
      <slicing>
        <discriminator>
          <type value="value"/>
          <path value="url"/>
        </discriminator>
        <ordered value="false"/>
        <rules value="open"/>
      </slicing>
      <min value="0"/>
      <max value="*"/>
    </element>
    <element id="NamingSystem.contact.extension:name">
      <path value="NamingSystem.contact.extension"/>
      <sliceName value="name"/>
      <short value="DSTU2: Name of a individual to contact (new)"/>
      <definition value="DSTU2: `NamingSystem.contact.name` (new:string)"/>
      <comment value="Element `NamingSystem.contact.name` has a context of NamingSystem.contact based on following the parent source element upwards and mapping to `NamingSystem`.&#xA;Element `NamingSystem.contact.name` has no mapping targets in FHIR R5. Typically, this is because the element has been added (is a new element).&#xA;If there is no named individual, the telecom is for the organization as a whole."/>
      <min value="0"/>
      <max value="1"/>
      <base>
        <path value="DomainResource.extension"/>
        <min value="0"/>
        <max value="*"/>
      </base>
      <type>
        <code value="Extension"/>
        <profile value="http://hl7.org/fhir/1.0/StructureDefinition/extension-NamingSystem.contact.name|0.1.0"/>
      </type>
    </element>
    <element id="NamingSystem.contact.extension:telecom">
      <path value="NamingSystem.contact.extension"/>
      <sliceName value="telecom"/>
      <short value="DSTU2: Contact details for individual or publisher (new)"/>
      <definition value="DSTU2: `NamingSystem.contact.telecom` (new:ContactPoint)"/>
      <comment value="Element `NamingSystem.contact.telecom` has a context of NamingSystem.contact based on following the parent source element upwards and mapping to `NamingSystem`.&#xA;Element `NamingSystem.contact.telecom` has no mapping targets in FHIR R5. Typically, this is because the element has been added (is a new element)."/>
      <min value="0"/>
      <max value="*"/>
      <base>
        <path value="DomainResource.extension"/>
        <min value="0"/>
        <max value="*"/>
      </base>
      <type>
        <code value="Extension"/>
        <profile value="http://hl7.org/fhir/1.0/StructureDefinition/extension-NamingSystem.contact.telecom|0.1.0"/>
      </type>
    </element>
    <element id="NamingSystem.uniqueId.type.extension">
      <path value="NamingSystem.uniqueId.type.extension"/>
      <slicing>
        <discriminator>
          <type value="value"/>
          <path value="url"/>
        </discriminator>
        <ordered value="false"/>
        <rules value="open"/>
      </slicing>
      <min value="0"/>
      <max value="*"/>
    </element>
    <element id="NamingSystem.uniqueId.type.extension:type">
      <path value="NamingSystem.uniqueId.type.extension"/>
      <sliceName value="type"/>
      <short value="DSTU2: oid | uuid | uri | other additional codes"/>
      <definition value="DSTU2: `NamingSystem.uniqueId.type` additional codes"/>
      <comment value="Element `NamingSystem.uniqueId.type` is mapped to FHIR R5 element `NamingSystem.uniqueId.type` as `RelatedTo`.&#xA;The mappings for `NamingSystem.uniqueId.type` do not allow expression of the necessary codes, per the bindings on the source and target.&#xA;Different identifier types may be used in different types of communications (OIDs for v3, URIs for FHIR, etc.).  Other includes RUIDs from v3, standard v2 code name strings, etc."/>
      <min value="0"/>
      <max value="1"/>
      <base>
        <path value="DomainResource.extension"/>
        <min value="0"/>
        <max value="*"/>
      </base>
      <type>
        <code value="Extension"/>
        <profile value="http://hl7.org/fhir/1.0/StructureDefinition/extension-NamingSystem.uniqueId.type|0.1.0"/>
      </type>
    </element>
    <element id="NamingSystem.uniqueId.period.extension">
      <path value="NamingSystem.uniqueId.period.extension"/>
      <slicing>
        <discriminator>
          <type value="value"/>
          <path value="url"/>
        </discriminator>
        <ordered value="false"/>
        <rules value="open"/>
      </slicing>
      <min value="0"/>
      <max value="*"/>
    </element>
    <element id="NamingSystem.uniqueId.period.extension:period">
      <path value="NamingSystem.uniqueId.period.extension"/>
      <sliceName value="period"/>
      <short value="DSTU2: period additional types"/>
      <definition value="DSTU2: `NamingSystem.uniqueId.period` additional types (Period) additional types from child elements (end, start)"/>
      <comment value="Element `NamingSystem.uniqueId.period` is mapped to FHIR R5 element `NamingSystem.uniqueId.period` as `SourceIsBroaderThanTarget`.&#xA;The mappings for `NamingSystem.uniqueId.period` do not cover the following types: Period.&#xA;The mappings for `NamingSystem.uniqueId.period` do not cover the following types based on type expansion: end, start.&#xA;Within a registry, a given identifier should only be &quot;active&quot; for a single namespace at a time.  (Ideally, an identifier should only ever be associated with a single namespace across all time)."/>
      <min value="0"/>
      <max value="1"/>
      <base>
        <path value="DomainResource.extension"/>
        <min value="0"/>
        <max value="*"/>
      </base>
      <type>
        <code value="Extension"/>
        <profile value="http://hl7.org/fhir/1.0/StructureDefinition/extension-NamingSystem.uniqueId.period|0.1.0"/>
      </type>
    </element>
  </differential>
</StructureDefinition>