STU3 Candidate

This page is part of the FHIR Specification (v1.8.0: STU 3 Draft). The current version which supercedes this version is 5.0.0. For a full list of available versions, see the Directory of published versions . Page versions: R5 R4B R4 R3 R2

Structuredefinition.profile.xml

Raw XML (canonical form)

StructureDefinition for structuredefinition

<StructureDefinition xmlns="http://hl7.org/fhir">
  <id value="StructureDefinition"/>
  <meta>
    <lastUpdated value="2016-12-06T12:22:34.981+11:00"/>
  </meta>
  <text>
    <status value="generated"/>
    <div xmlns="http://www.w3.org/1999/xhtml">
      <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 class="hierarchy" style="vertical-align: top; text-align : left; background-color: white; border: 0px #F0F0F0 solid;
           padding:0px 4px 0px 4px">
            <a href="formats.html#table" title="The logical name of the element">Name</a>
          </th>
          <th class="hierarchy" style="vertical-align: top; text-align : left; background-color: white; border: 0px #F0F0F0 solid;
           padding:0px 4px 0px 4px">
            <a href="formats.html#table" title="Information about the use of the element">Flags</a>
          </th>
          <th class="hierarchy" style="vertical-align: top; text-align : left; background-color: white; border: 0px #F0F0F0 solid;
           padding:0px 4px 0px 4px">
            <a href="formats.html#table" title="Minimum and Maximum # of times the the element can appear in the instance">Card.</a>
          </th>
          <th class="hierarchy" style="width: 100px">
            <a href="formats.html#table" title="Reference to the type of the element">Type</a>
          </th>
          <th class="hierarchy" style="vertical-align: top; text-align : left; background-color: white; border: 0px #F0F0F0 solid;
           padding:0px 4px 0px 4px">
            <a href="formats.html#table" title="Additional information about the element">Description &amp; Constraints</a>
            <span style="float: right">
              <a href="formats.html#table" title="Legend for this format">
                <img alt="doco" src="help16.png" style="background-color: inherit"/>
              </a>
            </span>
          </th>
        </tr>
        <tr style="border: 0px #F0F0F0 solid; padding:0px; vertical-align: top; background-color: white;">
          <td class="hierarchy" style="vertical-align: top; text-align : left; background-color: white; border: 0px #F0F0F0 solid;
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            Nj6C+QmaxAek5tyAAAAAElFTkSuQmCC" style="background-color: white; background-color: inherit" title="Resource"/> 
            <span title="StructureDefinition : A definition of a FHIR structure. This resource is used to describe
             the underlying resources, data types defined in FHIR, and also for describing extensions,
             and constraints on resources and data types.">StructureDefinition</span>
            <a name="StructureDefinition"> </a>
          </td>
          <td class="hierarchy" style="vertical-align: top; text-align : left; background-color: white; border: 0px #F0F0F0 solid;
           padding:0px 4px 0px 4px">
            <span style="padding: 3px" title="This element has or is affected by some invariants">I</span>
          </td>
          <td class="hierarchy" style="vertical-align: top; text-align : left; background-color: white; border: 0px #F0F0F0 solid;
           padding:0px 4px 0px 4px"/>
          <td class="hierarchy" style="vertical-align: top; text-align : left; background-color: white; border: 0px #F0F0F0 solid;
           padding:0px 4px 0px 4px">
            <a href="domainresource.html">DomainResource</a>
          </td>
          <td class="hierarchy" style="vertical-align: top; text-align : left; background-color: white; border: 0px #F0F0F0 solid;
           padding:0px 4px 0px 4px">Structural Definition
            <br/>
            <span style="font-style: italic" title="sdf-9">In any snapshot or differential, no label, code or requirements on the an element without
               a &quot;.&quot; in the path (e.g. the first element)</span>
            <br/>
            <span style="font-style: italic" title="sdf-19">Custom types can only be used in logical models</span>
            <br/>
            <span style="font-style: italic" title="sdf-16">All element definitions must have unique ids (snapshot)</span>
            <br/>
            <span style="font-style: italic" title="sdf-18">Context Invariants can only be used for extensions</span>
            <br/>
            <span style="font-style: italic" title="sdf-17">All element definitions must have unique ids (diff)</span>
            <br/>
            <span style="font-style: italic" title="sdf-12">element.base cannot appear if there is no base on the structure definition</span>
            <br/>
            <span style="font-style: italic" title="sdf-11">If there's a type, its content must match the path name in the first element of a snapshot</span>
            <br/>
            <span style="font-style: italic" title="sdf-14">All element definitions must have an id</span>
            <br/>
            <span style="font-style: italic" title="sdf-1">Element paths must be unique unless the structure is a constraint</span>
            <br/>
            <span style="font-style: italic" title="sdf-7">If the structure describes a base Resource or Type, the URL has to start with &quot;http://hl7.org/f
              hir/StructureDefinition/&quot; and the tail must match the id</span>
            <br/>
            <span style="font-style: italic" title="sdf-6">A structure must have either a differential, or a snapshot (or both)</span>
            <br/>
            <span style="font-style: italic" title="sdf-5">If the structure defines an extension then the structure must have context information</span>
            <br/>
            <span style="font-style: italic" title="sdf-4">If the structure is not abstract, then there SHALL be a baseDefinition</span>
          </td>
        </tr>

        <tr style="border: 0px #F0F0F0 solid; padding:0px; vertical-align: top; background-color: white;">
          <td class="hierarchy" style="vertical-align: top; text-align : left; background-color: white; border: 0px #F0F0F0 solid;
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            <span title="StructureDefinition.url : An absolute URL that is used to identify this structure definition
             when it is referenced in a specification, model, design or an instance. This SHALL be
             a URL, SHOULD be globally unique, and SHOULD be an address at which this structure definition
             is (or will be) published. The URL SHOULD include the major version of the structure definition.
             For more information see [Technical and Business Versions](resource.html#versions).">url</span>
            <a name="StructureDefinition.url"> </a>
          </td>
          <td class="hierarchy" style="vertical-align: top; text-align : left; background-color: white; border: 0px #F0F0F0 solid;
           padding:0px 4px 0px 4px">
            <span style="padding: 3px" title="This element is included in summaries">Σ</span>
          </td>
          <td class="hierarchy" style="vertical-align: top; text-align : left; background-color: white; border: 0px #F0F0F0 solid;
           padding:0px 4px 0px 4px">1..1</td>
          <td class="hierarchy" style="vertical-align: top; text-align : left; background-color: white; border: 0px #F0F0F0 solid;
           padding:0px 4px 0px 4px">
            <a href="datatypes.html#uri">uri</a>
          </td>
          <td class="hierarchy" style="vertical-align: top; text-align : left; background-color: white; border: 0px #F0F0F0 solid;
           padding:0px 4px 0px 4px">Logical uri to reference this structure definition (globally unique)</td>
        </tr>

        <tr style="border: 0px #F0F0F0 solid; padding:0px; vertical-align: top; background-color: white;">
          <td class="hierarchy" style="vertical-align: top; text-align : left; background-color: white; border: 0px #F0F0F0 solid;
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            <span title="StructureDefinition.identifier : A formal identifier that is used to identify this structure
             definition when it is represented in other formats, or referenced in a specification,
             model, design or an instance.">identifier</span>
            <a name="StructureDefinition.identifier"> </a>
          </td>
          <td class="hierarchy" style="vertical-align: top; text-align : left; background-color: white; border: 0px #F0F0F0 solid;
           padding:0px 4px 0px 4px">
            <span style="padding: 3px" title="This element is included in summaries">Σ</span>
          </td>
          <td class="hierarchy" style="vertical-align: top; text-align : left; background-color: white; border: 0px #F0F0F0 solid;
           padding:0px 4px 0px 4px">0..*</td>
          <td class="hierarchy" style="vertical-align: top; text-align : left; background-color: white; border: 0px #F0F0F0 solid;
           padding:0px 4px 0px 4px">
            <a href="datatypes.html#Identifier">Identifier</a>
          </td>
          <td class="hierarchy" style="vertical-align: top; text-align : left; background-color: white; border: 0px #F0F0F0 solid;
           padding:0px 4px 0px 4px">Additional identifier for the structure definition</td>
        </tr>

        <tr style="border: 0px #F0F0F0 solid; padding:0px; vertical-align: top; background-color: white;">
          <td class="hierarchy" style="vertical-align: top; text-align : left; background-color: white; border: 0px #F0F0F0 solid;
           padding:0px 4px 0px 4px; white-space: nowrap; background-image: url(data: image/png;base64,iVBORw0KG
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            <img alt="." class="hierarchy" src="data: image/png;base64,iVBORw0KGgoAAAANSUhEUgAAABAAAAAWCAYAAADJqhx8AAAACXBIWXMAAAsTAAALEwEAmpwYAAAAB
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            <img alt="." class="hierarchy" src="data: image/png;base64,iVBORw0KGgoAAAANSUhEUgAAABAAAAAQCAYAAAAf8/9hAAAABmJLR0QA/wD/AP+gvaeTAAAACXBIW
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            8MUggvnH/EOVJjAW4AuQHJ+O75LYqikXE0LzAAALePEntTkEoSAAAAAElFTkSuQmCC" style="background-color: white; background-color: inherit" title="Primitive Data Type"/> 
            <span title="StructureDefinition.version : The identifier that is used to identify this version of
             the structure definition when it is referenced in a specification, model, design or instance.
             This is an arbitrary value managed by the structure definition 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 are orderable.">version</span>
            <a name="StructureDefinition.version"> </a>
          </td>
          <td class="hierarchy" style="vertical-align: top; text-align : left; background-color: white; border: 0px #F0F0F0 solid;
           padding:0px 4px 0px 4px">
            <span style="padding: 3px" title="This element is included in summaries">Σ</span>
          </td>
          <td class="hierarchy" style="vertical-align: top; text-align : left; background-color: white; border: 0px #F0F0F0 solid;
           padding:0px 4px 0px 4px">0..1</td>
          <td class="hierarchy" style="vertical-align: top; text-align : left; background-color: white; border: 0px #F0F0F0 solid;
           padding:0px 4px 0px 4px">
            <a href="datatypes.html#string">string</a>
          </td>
          <td class="hierarchy" style="vertical-align: top; text-align : left; background-color: white; border: 0px #F0F0F0 solid;
           padding:0px 4px 0px 4px">Business version of the structure definition</td>
        </tr>

        <tr style="border: 0px #F0F0F0 solid; padding:0px; vertical-align: top; background-color: white;">
          <td class="hierarchy" style="vertical-align: top; text-align : left; background-color: white; border: 0px #F0F0F0 solid;
           padding:0px 4px 0px 4px; white-space: nowrap; background-image: url(data: image/png;base64,iVBORw0KG
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            <span title="StructureDefinition.name : A natural language name identifying the structure definition.
             This name should be usable as an identifier for the module by machine processing applications
             such as code generation.">name</span>
            <a name="StructureDefinition.name"> </a>
          </td>
          <td class="hierarchy" style="vertical-align: top; text-align : left; background-color: white; border: 0px #F0F0F0 solid;
           padding:0px 4px 0px 4px">
            <span style="padding: 3px" title="This element is included in summaries">Σ</span>
          </td>
          <td class="hierarchy" style="vertical-align: top; text-align : left; background-color: white; border: 0px #F0F0F0 solid;
           padding:0px 4px 0px 4px">1..1</td>
          <td class="hierarchy" style="vertical-align: top; text-align : left; background-color: white; border: 0px #F0F0F0 solid;
           padding:0px 4px 0px 4px">
            <a href="datatypes.html#string">string</a>
          </td>
          <td class="hierarchy" style="vertical-align: top; text-align : left; background-color: white; border: 0px #F0F0F0 solid;
           padding:0px 4px 0px 4px">Name for this structure definition (Computer friendly)</td>
        </tr>

        <tr style="border: 0px #F0F0F0 solid; padding:0px; vertical-align: top; background-color: white;">
          <td class="hierarchy" style="vertical-align: top; text-align : left; background-color: white; border: 0px #F0F0F0 solid;
           padding:0px 4px 0px 4px; white-space: nowrap; background-image: url(data: image/png;base64,iVBORw0KG
          goAAAANSUhEUgAAAyAAAAACCAYAAACg/LjIAAAAL0lEQVR42u3XsQ0AQAgCQHdl/xn8jxvYWB3JlTR0VJLa+OltBwAAYP6EEQAAgC
          sPVYVAgIJrA/sAAAAASUVORK5CYII=)">
            <img alt="." class="hierarchy" src="data: image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAAWCAYAAAABxvaqAAAACXBIWXMAAAsTAAALEwEAmpwYAAAAB
            3RJTUUH3wYeFzIs1vtcMQAAAB1pVFh0Q29tbWVudAAAAAAAQ3JlYXRlZCB3aXRoIEdJTVBkLmUHAAAAE0lEQVQI12P4//8/AxMDAw
            NdCABMPwMo2ctnoQAAAABJRU5ErkJggg==" style="background-color: inherit"/>
            <img alt="." class="hierarchy" src="data: image/png;base64,iVBORw0KGgoAAAANSUhEUgAAABAAAAAWCAYAAADJqhx8AAAACXBIWXMAAAsTAAALEwEAmpwYAAAAB
            3RJTUUH3wYeFzI3XJ6V3QAAAB1pVFh0Q29tbWVudAAAAAAAQ3JlYXRlZCB3aXRoIEdJTVBkLmUHAAAANklEQVQ4y+2RsQ0AIAzDav
            7/2VzQwoCY4iWbZSmo1QGoUgNMghvWaIejPQW/CrrNCylIwcOCDYfLNRcNer4SAAAAAElFTkSuQmCC" style="background-color: inherit"/>
            <img alt="." class="hierarchy" src="data: image/png;base64,iVBORw0KGgoAAAANSUhEUgAAABAAAAAQCAYAAAAf8/9hAAAABmJLR0QA/wD/AP+gvaeTAAAACXBIW
            XMAAAsTAAALEwEAmpwYAAAAB3RJTUUH3gYBFzI0BrFQCwAAAERJREFUOMtj/P//PwMlgImBQjDwBrCcOnWKokBgYWBgYDCU+06W5i
            8MUggvnH/EOVJjAW4AuQHJ+O75LYqikXE0LzAAALePEntTkEoSAAAAAElFTkSuQmCC" style="background-color: white; background-color: inherit" title="Primitive Data Type"/> 
            <span title="StructureDefinition.title : A short, descriptive, user-friendly title for the structure
             definition.">title</span>
            <a name="StructureDefinition.title"> </a>
          </td>
          <td class="hierarchy" style="vertical-align: top; text-align : left; background-color: white; border: 0px #F0F0F0 solid;
           padding:0px 4px 0px 4px">
            <span style="padding: 3px" title="This element is included in summaries">Σ</span>
          </td>
          <td class="hierarchy" style="vertical-align: top; text-align : left; background-color: white; border: 0px #F0F0F0 solid;
           padding:0px 4px 0px 4px">0..1</td>
          <td class="hierarchy" style="vertical-align: top; text-align : left; background-color: white; border: 0px #F0F0F0 solid;
           padding:0px 4px 0px 4px">
            <a href="datatypes.html#string">string</a>
          </td>
          <td class="hierarchy" style="vertical-align: top; text-align : left; background-color: white; border: 0px #F0F0F0 solid;
           padding:0px 4px 0px 4px">Name for this structure definition (Human friendly)</td>
        </tr>

        <tr style="border: 0px #F0F0F0 solid; padding:0px; vertical-align: top; background-color: white;">
          <td class="hierarchy" style="vertical-align: top; text-align : left; background-color: white; border: 0px #F0F0F0 solid;
           padding:0px 4px 0px 4px; white-space: nowrap; background-image: url(data: image/png;base64,iVBORw0KG
          goAAAANSUhEUgAAAyAAAAACCAYAAACg/LjIAAAAL0lEQVR42u3XsQ0AQAgCQHdl/xn8jxvYWB3JlTR0VJLa+OltBwAAYP6EEQAAgC
          sPVYVAgIJrA/sAAAAASUVORK5CYII=)">
            <img alt="." class="hierarchy" src="data: image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAAWCAYAAAABxvaqAAAACXBIWXMAAAsTAAALEwEAmpwYAAAAB
            3RJTUUH3wYeFzIs1vtcMQAAAB1pVFh0Q29tbWVudAAAAAAAQ3JlYXRlZCB3aXRoIEdJTVBkLmUHAAAAE0lEQVQI12P4//8/AxMDAw
            NdCABMPwMo2ctnoQAAAABJRU5ErkJggg==" style="background-color: inherit"/>
            <img alt="." class="hierarchy" src="data: image/png;base64,iVBORw0KGgoAAAANSUhEUgAAABAAAAAWCAYAAADJqhx8AAAACXBIWXMAAAsTAAALEwEAmpwYAAAAB
            3RJTUUH3wYeFzI3XJ6V3QAAAB1pVFh0Q29tbWVudAAAAAAAQ3JlYXRlZCB3aXRoIEdJTVBkLmUHAAAANklEQVQ4y+2RsQ0AIAzDav
            7/2VzQwoCY4iWbZSmo1QGoUgNMghvWaIejPQW/CrrNCylIwcOCDYfLNRcNer4SAAAAAElFTkSuQmCC" style="background-color: inherit"/>
            <img alt="." class="hierarchy" src="data: image/png;base64,iVBORw0KGgoAAAANSUhEUgAAABAAAAAQCAYAAAAf8/9hAAAABmJLR0QA/wD/AP+gvaeTAAAACXBIW
            XMAAAsTAAALEwEAmpwYAAAAB3RJTUUH3gYBFzI0BrFQCwAAAERJREFUOMtj/P//PwMlgImBQjDwBrCcOnWKokBgYWBgYDCU+06W5i
            8MUggvnH/EOVJjAW4AuQHJ+O75LYqikXE0LzAAALePEntTkEoSAAAAAElFTkSuQmCC" style="background-color: white; background-color: inherit" title="Primitive Data Type"/> 
            <span title="StructureDefinition.status : The status of this structure definition. Enables tracking
             the life-cycle of the content.">status</span>
            <a name="StructureDefinition.status"> </a>
          </td>
          <td class="hierarchy" style="vertical-align: top; text-align : left; background-color: white; border: 0px #F0F0F0 solid;
           padding:0px 4px 0px 4px">
            <span style="padding: 3px" title="This element is a modifier element">?!</span>
            <span style="padding: 3px" title="This element is included in summaries">Σ</span>
          </td>
          <td class="hierarchy" style="vertical-align: top; text-align : left; background-color: white; border: 0px #F0F0F0 solid;
           padding:0px 4px 0px 4px">1..1</td>
          <td class="hierarchy" style="vertical-align: top; text-align : left; background-color: white; border: 0px #F0F0F0 solid;
           padding:0px 4px 0px 4px">
            <a href="datatypes.html#code">code</a>
          </td>
          <td class="hierarchy" style="vertical-align: top; text-align : left; background-color: white; border: 0px #F0F0F0 solid;
           padding:0px 4px 0px 4px">draft | active | retired
            <br/>
            <a href="valueset-publication-status.html" title="The lifecycle status of a Value Set or Concept Map.">PublicationStatus</a> (
            <a href="terminologies.html#required" title="To be conformant, instances of this element SHALL include a code from the specified value
             set.">Required</a>)
          </td>
        </tr>

        <tr style="border: 0px #F0F0F0 solid; padding:0px; vertical-align: top; background-color: white;">
          <td class="hierarchy" style="vertical-align: top; text-align : left; background-color: white; border: 0px #F0F0F0 solid;
           padding:0px 4px 0px 4px; white-space: nowrap; background-image: url(data: image/png;base64,iVBORw0KG
          goAAAANSUhEUgAAAyAAAAACCAYAAACg/LjIAAAAL0lEQVR42u3XsQ0AQAgCQHdl/xn8jxvYWB3JlTR0VJLa+OltBwAAYP6EEQAAgC
          sPVYVAgIJrA/sAAAAASUVORK5CYII=)">
            <img alt="." class="hierarchy" src="data: image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAAWCAYAAAABxvaqAAAACXBIWXMAAAsTAAALEwEAmpwYAAAAB
            3RJTUUH3wYeFzIs1vtcMQAAAB1pVFh0Q29tbWVudAAAAAAAQ3JlYXRlZCB3aXRoIEdJTVBkLmUHAAAAE0lEQVQI12P4//8/AxMDAw
            NdCABMPwMo2ctnoQAAAABJRU5ErkJggg==" style="background-color: inherit"/>
            <img alt="." class="hierarchy" src="data: image/png;base64,iVBORw0KGgoAAAANSUhEUgAAABAAAAAWCAYAAADJqhx8AAAACXBIWXMAAAsTAAALEwEAmpwYAAAAB
            3RJTUUH3wYeFzI3XJ6V3QAAAB1pVFh0Q29tbWVudAAAAAAAQ3JlYXRlZCB3aXRoIEdJTVBkLmUHAAAANklEQVQ4y+2RsQ0AIAzDav
            7/2VzQwoCY4iWbZSmo1QGoUgNMghvWaIejPQW/CrrNCylIwcOCDYfLNRcNer4SAAAAAElFTkSuQmCC" style="background-color: inherit"/>
            <img alt="." class="hierarchy" src="data: image/png;base64,iVBORw0KGgoAAAANSUhEUgAAABAAAAAQCAYAAAAf8/9hAAAABmJLR0QA/wD/AP+gvaeTAAAACXBIW
            XMAAAsTAAALEwEAmpwYAAAAB3RJTUUH3gYBFzI0BrFQCwAAAERJREFUOMtj/P//PwMlgImBQjDwBrCcOnWKokBgYWBgYDCU+06W5i
            8MUggvnH/EOVJjAW4AuQHJ+O75LYqikXE0LzAAALePEntTkEoSAAAAAElFTkSuQmCC" style="background-color: white; background-color: inherit" title="Primitive Data Type"/> 
            <span title="StructureDefinition.experimental : A flag to indicate that this structure definition is
             authored for testing purposes (or education/evaluation/marketing), and is not intended
             to be used for genuine usage.">experimental</span>
            <a name="StructureDefinition.experimental"> </a>
          </td>
          <td class="hierarchy" style="vertical-align: top; text-align : left; background-color: white; border: 0px #F0F0F0 solid;
           padding:0px 4px 0px 4px">
            <span style="padding: 3px" title="This element is a modifier element">?!</span>
            <span style="padding: 3px" title="This element is included in summaries">Σ</span>
          </td>
          <td class="hierarchy" style="vertical-align: top; text-align : left; background-color: white; border: 0px #F0F0F0 solid;
           padding:0px 4px 0px 4px">0..1</td>
          <td class="hierarchy" style="vertical-align: top; text-align : left; background-color: white; border: 0px #F0F0F0 solid;
           padding:0px 4px 0px 4px">
            <a href="datatypes.html#boolean">boolean</a>
          </td>
          <td class="hierarchy" style="vertical-align: top; text-align : left; background-color: white; border: 0px #F0F0F0 solid;
           padding:0px 4px 0px 4px">If for testing purposes, not real usage</td>
        </tr>

        <tr style="border: 0px #F0F0F0 solid; padding:0px; vertical-align: top; background-color: white;">
          <td class="hierarchy" style="vertical-align: top; text-align : left; background-color: white; border: 0px #F0F0F0 solid;
           padding:0px 4px 0px 4px; white-space: nowrap; background-image: url(data: image/png;base64,iVBORw0KG
          goAAAANSUhEUgAAAyAAAAACCAYAAACg/LjIAAAAL0lEQVR42u3XsQ0AQAgCQHdl/xn8jxvYWB3JlTR0VJLa+OltBwAAYP6EEQAAgC
          sPVYVAgIJrA/sAAAAASUVORK5CYII=)">
            <img alt="." class="hierarchy" src="data: image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAAWCAYAAAABxvaqAAAACXBIWXMAAAsTAAALEwEAmpwYAAAAB
            3RJTUUH3wYeFzIs1vtcMQAAAB1pVFh0Q29tbWVudAAAAAAAQ3JlYXRlZCB3aXRoIEdJTVBkLmUHAAAAE0lEQVQI12P4//8/AxMDAw
            NdCABMPwMo2ctnoQAAAABJRU5ErkJggg==" style="background-color: inherit"/>
            <img alt="." class="hierarchy" src="data: image/png;base64,iVBORw0KGgoAAAANSUhEUgAAABAAAAAWCAYAAADJqhx8AAAACXBIWXMAAAsTAAALEwEAmpwYAAAAB
            3RJTUUH3wYeFzI3XJ6V3QAAAB1pVFh0Q29tbWVudAAAAAAAQ3JlYXRlZCB3aXRoIEdJTVBkLmUHAAAANklEQVQ4y+2RsQ0AIAzDav
            7/2VzQwoCY4iWbZSmo1QGoUgNMghvWaIejPQW/CrrNCylIwcOCDYfLNRcNer4SAAAAAElFTkSuQmCC" style="background-color: inherit"/>
            <img alt="." class="hierarchy" src="data: image/png;base64,iVBORw0KGgoAAAANSUhEUgAAABAAAAAQCAYAAAAf8/9hAAAABmJLR0QA/wD/AP+gvaeTAAAACXBIW
            XMAAAsTAAALEwEAmpwYAAAAB3RJTUUH3gYBFzI0BrFQCwAAAERJREFUOMtj/P//PwMlgImBQjDwBrCcOnWKokBgYWBgYDCU+06W5i
            8MUggvnH/EOVJjAW4AuQHJ+O75LYqikXE0LzAAALePEntTkEoSAAAAAElFTkSuQmCC" style="background-color: white; background-color: inherit" title="Primitive Data Type"/> 
            <span title="StructureDefinition.publisher : The name of the individual or organization that published
             the structure definition.">publisher</span>
            <a name="StructureDefinition.publisher"> </a>
          </td>
          <td class="hierarchy" style="vertical-align: top; text-align : left; background-color: white; border: 0px #F0F0F0 solid;
           padding:0px 4px 0px 4px">
            <span style="padding: 3px" title="This element is included in summaries">Σ</span>
          </td>
          <td class="hierarchy" style="vertical-align: top; text-align : left; background-color: white; border: 0px #F0F0F0 solid;
           padding:0px 4px 0px 4px">0..1</td>
          <td class="hierarchy" style="vertical-align: top; text-align : left; background-color: white; border: 0px #F0F0F0 solid;
           padding:0px 4px 0px 4px">
            <a href="datatypes.html#string">string</a>
          </td>
          <td class="hierarchy" style="vertical-align: top; text-align : left; background-color: white; border: 0px #F0F0F0 solid;
           padding:0px 4px 0px 4px">Name of the publisher (Organization or individual)</td>
        </tr>

        <tr style="border: 0px #F0F0F0 solid; padding:0px; vertical-align: top; background-color: white;">
          <td class="hierarchy" style="vertical-align: top; text-align : left; background-color: white; border: 0px #F0F0F0 solid;
           padding:0px 4px 0px 4px; white-space: nowrap; background-image: url(data: image/png;base64,iVBORw0KG
          goAAAANSUhEUgAAAyAAAAACCAYAAACg/LjIAAAAL0lEQVR42u3XsQ0AQAgCQHdl/xn8jxvYWB3JlTR0VJLa+OltBwAAYP6EEQAAgC
          sPVYVAgIJrA/sAAAAASUVORK5CYII=)">
            <img alt="." class="hierarchy" src="data: image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAAWCAYAAAABxvaqAAAACXBIWXMAAAsTAAALEwEAmpwYAAAAB
            3RJTUUH3wYeFzIs1vtcMQAAAB1pVFh0Q29tbWVudAAAAAAAQ3JlYXRlZCB3aXRoIEdJTVBkLmUHAAAAE0lEQVQI12P4//8/AxMDAw
            NdCABMPwMo2ctnoQAAAABJRU5ErkJggg==" style="background-color: inherit"/>
            <img alt="." class="hierarchy" src="data: image/png;base64,iVBORw0KGgoAAAANSUhEUgAAABAAAAAWCAYAAADJqhx8AAAACXBIWXMAAAsTAAALEwEAmpwYAAAAB
            3RJTUUH3wYeFzI3XJ6V3QAAAB1pVFh0Q29tbWVudAAAAAAAQ3JlYXRlZCB3aXRoIEdJTVBkLmUHAAAANklEQVQ4y+2RsQ0AIAzDav
            7/2VzQwoCY4iWbZSmo1QGoUgNMghvWaIejPQW/CrrNCylIwcOCDYfLNRcNer4SAAAAAElFTkSuQmCC" style="background-color: inherit"/>
            <img alt="." class="hierarchy" src="data: image/png;base64,R0lGODlhEAAQAOZ/APrkusOiYvvfqbiXWaV2G+jGhdq1b8GgYf3v1frw3vTUlsWkZNewbcSjY/DQk
            ad4Hb6dXv3u0f3v1ObEgfPTlerJiP3w1v79+e7OkPrfrfnjuNOtZPrpydaxa+/YrvvdpP779ZxvFPvnwKKBQaFyF/369M2vdaqHRP
            z58/HNh/vowufFhfroxO3OkPrluv779tK0e6JzGProwvrow9m4eOnIifPTlPDPkP78+Naxaf3v0/zowfXRi+bFhLWUVv379/rnwPv
            szv3rye3LiPvnv+3MjPDasKiIS/789/3x2f747eXDg+7Mifvu0tu7f+/QkfDTnPXWmPrjsvrjtPbPgrqZW+/QlPz48K2EMv36866O
            UPvowat8Ivvgq/Pbrvzgq/PguvrgrqN0Gda2evfYm9+7d/rpw9q6e/LSku/Rl/XVl/LSlfrkt+zVqe7Wqv3x1/bNffbOf59wFdS6i
            f3u0vrqyP3owPvepfXQivDQkO/PkKh9K7STVf779P///////yH5BAEAAH8ALAAAAAAQABAAAAfNgH+Cg36FfoOIhH4JBxBghYl/hQ
            kNAV0IVT5GkJKLCwtQaSsSdx9aR26Gcwt2IkQaNRI6dBERIzCFDSgWSW8WCDkbBnoOQ3uFARc/JQJfCAZlT0x4ZFyFBxdNQT9ZCBN
            WKQoKUQ+FEDgcdTIAV14YDmg2CgSFA0hmQC5TLE4VRTdrKJAoxOeFCzZSwsw4U6BCizwUQhQyEaAPiAwCVNCY0FCNnA6GPAwYoETI
            FgY9loiRA4dToTYnsOxg8CBGHE6ICvEYQ4AKzkidfgoKBAA7" style="background-color: white; background-color: inherit" title="Data Type"/> 
            <span title="StructureDefinition.contact : Contact details to assist a user in finding and communicating
             with the publisher.">contact</span>
            <a name="StructureDefinition.contact"> </a>
          </td>
          <td class="hierarchy" style="vertical-align: top; text-align : left; background-color: white; border: 0px #F0F0F0 solid;
           padding:0px 4px 0px 4px">
            <span style="padding: 3px" title="This element is included in summaries">Σ</span>
          </td>
          <td class="hierarchy" style="vertical-align: top; text-align : left; background-color: white; border: 0px #F0F0F0 solid;
           padding:0px 4px 0px 4px">0..*</td>
          <td class="hierarchy" style="vertical-align: top; text-align : left; background-color: white; border: 0px #F0F0F0 solid;
           padding:0px 4px 0px 4px">
            <a href="metadatatypes.html#ContactDetail">ContactDetail</a>
          </td>
          <td class="hierarchy" style="vertical-align: top; text-align : left; background-color: white; border: 0px #F0F0F0 solid;
           padding:0px 4px 0px 4px">Contact details for the publisher</td>
        </tr>

        <tr style="border: 0px #F0F0F0 solid; padding:0px; vertical-align: top; background-color: white;">
          <td class="hierarchy" style="vertical-align: top; text-align : left; background-color: white; border: 0px #F0F0F0 solid;
           padding:0px 4px 0px 4px; white-space: nowrap; background-image: url(data: image/png;base64,iVBORw0KG
          goAAAANSUhEUgAAAyAAAAACCAYAAACg/LjIAAAAL0lEQVR42u3XsQ0AQAgCQHdl/xn8jxvYWB3JlTR0VJLa+OltBwAAYP6EEQAAgC
          sPVYVAgIJrA/sAAAAASUVORK5CYII=)">
            <img alt="." class="hierarchy" src="data: image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAAWCAYAAAABxvaqAAAACXBIWXMAAAsTAAALEwEAmpwYAAAAB
            3RJTUUH3wYeFzIs1vtcMQAAAB1pVFh0Q29tbWVudAAAAAAAQ3JlYXRlZCB3aXRoIEdJTVBkLmUHAAAAE0lEQVQI12P4//8/AxMDAw
            NdCABMPwMo2ctnoQAAAABJRU5ErkJggg==" style="background-color: inherit"/>
            <img alt="." class="hierarchy" src="data: image/png;base64,iVBORw0KGgoAAAANSUhEUgAAABAAAAAWCAYAAADJqhx8AAAACXBIWXMAAAsTAAALEwEAmpwYAAAAB
            3RJTUUH3wYeFzI3XJ6V3QAAAB1pVFh0Q29tbWVudAAAAAAAQ3JlYXRlZCB3aXRoIEdJTVBkLmUHAAAANklEQVQ4y+2RsQ0AIAzDav
            7/2VzQwoCY4iWbZSmo1QGoUgNMghvWaIejPQW/CrrNCylIwcOCDYfLNRcNer4SAAAAAElFTkSuQmCC" style="background-color: inherit"/>
            <img alt="." class="hierarchy" src="data: image/png;base64,iVBORw0KGgoAAAANSUhEUgAAABAAAAAQCAYAAAAf8/9hAAAABmJLR0QA/wD/AP+gvaeTAAAACXBIW
            XMAAAsTAAALEwEAmpwYAAAAB3RJTUUH3gYBFzI0BrFQCwAAAERJREFUOMtj/P//PwMlgImBQjDwBrCcOnWKokBgYWBgYDCU+06W5i
            8MUggvnH/EOVJjAW4AuQHJ+O75LYqikXE0LzAAALePEntTkEoSAAAAAElFTkSuQmCC" style="background-color: white; background-color: inherit" title="Primitive Data Type"/> 
            <span title="StructureDefinition.date : The date  (and optionally time) when the structure definition
             was published. The date must change when the business version changes, if it does, and
             it must change if the status code changes. In addition, it should change when the substantive
             content of the structure definition changes.">date</span>
            <a name="StructureDefinition.date"> </a>
          </td>
          <td class="hierarchy" style="vertical-align: top; text-align : left; background-color: white; border: 0px #F0F0F0 solid;
           padding:0px 4px 0px 4px">
            <span style="padding: 3px" title="This element is included in summaries">Σ</span>
          </td>
          <td class="hierarchy" style="vertical-align: top; text-align : left; background-color: white; border: 0px #F0F0F0 solid;
           padding:0px 4px 0px 4px">0..1</td>
          <td class="hierarchy" style="vertical-align: top; text-align : left; background-color: white; border: 0px #F0F0F0 solid;
           padding:0px 4px 0px 4px">
            <a href="datatypes.html#dateTime">dateTime</a>
          </td>
          <td class="hierarchy" style="vertical-align: top; text-align : left; background-color: white; border: 0px #F0F0F0 solid;
           padding:0px 4px 0px 4px">Date this was last changed</td>
        </tr>

        <tr style="border: 0px #F0F0F0 solid; padding:0px; vertical-align: top; background-color: white;">
          <td class="hierarchy" style="vertical-align: top; text-align : left; background-color: white; border: 0px #F0F0F0 solid;
           padding:0px 4px 0px 4px; white-space: nowrap; background-image: url(data: image/png;base64,iVBORw0KG
          goAAAANSUhEUgAAAyAAAAACCAYAAACg/LjIAAAAL0lEQVR42u3XsQ0AQAgCQHdl/xn8jxvYWB3JlTR0VJLa+OltBwAAYP6EEQAAgC
          sPVYVAgIJrA/sAAAAASUVORK5CYII=)">
            <img alt="." class="hierarchy" src="data: image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAAWCAYAAAABxvaqAAAACXBIWXMAAAsTAAALEwEAmpwYAAAAB
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            <img alt="." class="hierarchy" src="data: image/png;base64,iVBORw0KGgoAAAANSUhEUgAAABAAAAAWCAYAAADJqhx8AAAACXBIWXMAAAsTAAALEwEAmpwYAAAAB
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            <span title="StructureDefinition.description : A free text natural language description of the structure
             definition from the consumer's perspective.">description</span>
            <a name="StructureDefinition.description"> </a>
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          <td class="hierarchy" style="vertical-align: top; text-align : left; background-color: white; border: 0px #F0F0F0 solid;
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          <td class="hierarchy" style="vertical-align: top; text-align : left; background-color: white; border: 0px #F0F0F0 solid;
           padding:0px 4px 0px 4px">0..1</td>
          <td class="hierarchy" style="vertical-align: top; text-align : left; background-color: white; border: 0px #F0F0F0 solid;
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            <a href="datatypes.html#markdown">markdown</a>
          </td>
          <td class="hierarchy" style="vertical-align: top; text-align : left; background-color: white; border: 0px #F0F0F0 solid;
           padding:0px 4px 0px 4px">Natural language description of the structure definition</td>
        </tr>

        <tr style="border: 0px #F0F0F0 solid; padding:0px; vertical-align: top; background-color: white;">
          <td class="hierarchy" style="vertical-align: top; text-align : left; background-color: white; border: 0px #F0F0F0 solid;
           padding:0px 4px 0px 4px; white-space: nowrap; background-image: url(data: image/png;base64,iVBORw0KG
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          sPVYVAgIJrA/sAAAAASUVORK5CYII=)">
            <img alt="." class="hierarchy" src="data: image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAAWCAYAAAABxvaqAAAACXBIWXMAAAsTAAALEwEAmpwYAAAAB
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            <img alt="." class="hierarchy" src="data: image/png;base64,iVBORw0KGgoAAAANSUhEUgAAABAAAAAWCAYAAADJqhx8AAAACXBIWXMAAAsTAAALEwEAmpwYAAAAB
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            <span title="StructureDefinition.useContext : The content was developed with a focus and intent of
             supporting the contexts that are listed. These terms may be used to assist with indexing
             and searching of code system definitions.">useContext</span>
            <a name="StructureDefinition.useContext"> </a>
          </td>
          <td class="hierarchy" style="vertical-align: top; text-align : left; background-color: white; border: 0px #F0F0F0 solid;
           padding:0px 4px 0px 4px">
            <span style="padding: 3px" title="This element is included in summaries">Σ</span>
          </td>
          <td class="hierarchy" style="vertical-align: top; text-align : left; background-color: white; border: 0px #F0F0F0 solid;
           padding:0px 4px 0px 4px">0..*</td>
          <td class="hierarchy" style="vertical-align: top; text-align : left; background-color: white; border: 0px #F0F0F0 solid;
           padding:0px 4px 0px 4px">
            <a href="metadatatypes.html#UsageContext">UsageContext</a>
          </td>
          <td class="hierarchy" style="vertical-align: top; text-align : left; background-color: white; border: 0px #F0F0F0 solid;
           padding:0px 4px 0px 4px">Content intends to support these contexts</td>
        </tr>

        <tr style="border: 0px #F0F0F0 solid; padding:0px; vertical-align: top; background-color: white;">
          <td class="hierarchy" style="vertical-align: top; text-align : left; background-color: white; border: 0px #F0F0F0 solid;
           padding:0px 4px 0px 4px; white-space: nowrap; background-image: url(data: image/png;base64,iVBORw0KG
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            <img alt="." class="hierarchy" src="data: image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAAWCAYAAAABxvaqAAAACXBIWXMAAAsTAAALEwEAmpwYAAAAB
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            <img alt="." class="hierarchy" src="data: image/png;base64,iVBORw0KGgoAAAANSUhEUgAAABAAAAAWCAYAAADJqhx8AAAACXBIWXMAAAsTAAALEwEAmpwYAAAAB
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            <img alt="." class="hierarchy" src="data: image/png;base64,R0lGODlhEAAQAOZ/APrkusOiYvvfqbiXWaV2G+jGhdq1b8GgYf3v1frw3vTUlsWkZNewbcSjY/DQk
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            FgY9loiRA4dToTYnsOxg8CBGHE6ICvEYQ4AKzkidfgoKBAA7" style="background-color: white; background-color: inherit" title="Data Type"/> 
            <span title="StructureDefinition.jurisdiction : A jurisdiction in which the structure definition is
             intended to be used.">jurisdiction</span>
            <a name="StructureDefinition.jurisdiction"> </a>
          </td>
          <td class="hierarchy" style="vertical-align: top; text-align : left; background-color: white; border: 0px #F0F0F0 solid;
           padding:0px 4px 0px 4px">
            <span style="padding: 3px" title="This element is included in summaries">Σ</span>
          </td>
          <td class="hierarchy" style="vertical-align: top; text-align : left; background-color: white; border: 0px #F0F0F0 solid;
           padding:0px 4px 0px 4px">0..*</td>
          <td class="hierarchy" style="vertical-align: top; text-align : left; background-color: white; border: 0px #F0F0F0 solid;
           padding:0px 4px 0px 4px">
            <a href="datatypes.html#CodeableConcept">CodeableConcept</a>
          </td>
          <td class="hierarchy" style="vertical-align: top; text-align : left; background-color: white; border: 0px #F0F0F0 solid;
           padding:0px 4px 0px 4px">Intended jurisdiction for structure definition (if applicable)
            <br/>
            <a href="valueset-jurisdiction.html" title="Countries and regions within which this artifact is targeted for use">Jurisdiction ValueSet</a> (
            <a href="terminologies.html#extensible" title="To be conformant, instances of this element SHALL include a code from the specified value
             set if any of the codes within the value set can apply to the concept being communicated.
              If the value set does not cover the concept (based on human review), alternate codings
             (or, data type allowing, text) may be included instead.">Extensible</a>)
          </td>
        </tr>

        <tr style="border: 0px #F0F0F0 solid; padding:0px; vertical-align: top; background-color: white;">
          <td class="hierarchy" style="vertical-align: top; text-align : left; background-color: white; border: 0px #F0F0F0 solid;
           padding:0px 4px 0px 4px; white-space: nowrap; background-image: url(data: image/png;base64,iVBORw0KG
          goAAAANSUhEUgAAAyAAAAACCAYAAACg/LjIAAAAL0lEQVR42u3XsQ0AQAgCQHdl/xn8jxvYWB3JlTR0VJLa+OltBwAAYP6EEQAAgC
          sPVYVAgIJrA/sAAAAASUVORK5CYII=)">
            <img alt="." class="hierarchy" src="data: image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAAWCAYAAAABxvaqAAAACXBIWXMAAAsTAAALEwEAmpwYAAAAB
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            <img alt="." class="hierarchy" src="data: image/png;base64,iVBORw0KGgoAAAANSUhEUgAAABAAAAAWCAYAAADJqhx8AAAACXBIWXMAAAsTAAALEwEAmpwYAAAAB
            3RJTUUH3wYeFzI3XJ6V3QAAAB1pVFh0Q29tbWVudAAAAAAAQ3JlYXRlZCB3aXRoIEdJTVBkLmUHAAAANklEQVQ4y+2RsQ0AIAzDav
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            <img alt="." class="hierarchy" src="data: image/png;base64,iVBORw0KGgoAAAANSUhEUgAAABAAAAAQCAYAAAAf8/9hAAAABmJLR0QA/wD/AP+gvaeTAAAACXBIW
            XMAAAsTAAALEwEAmpwYAAAAB3RJTUUH3gYBFzI0BrFQCwAAAERJREFUOMtj/P//PwMlgImBQjDwBrCcOnWKokBgYWBgYDCU+06W5i
            8MUggvnH/EOVJjAW4AuQHJ+O75LYqikXE0LzAAALePEntTkEoSAAAAAElFTkSuQmCC" style="background-color: white; background-color: inherit" title="Primitive Data Type"/> 
            <span title="StructureDefinition.purpose : Explains why this structure definition is needed and why
             it has been designed as it has.">purpose</span>
            <a name="StructureDefinition.purpose"> </a>
          </td>
          <td class="hierarchy" style="vertical-align: top; text-align : left; background-color: white; border: 0px #F0F0F0 solid;
           padding:0px 4px 0px 4px"/>
          <td class="hierarchy" style="vertical-align: top; text-align : left; background-color: white; border: 0px #F0F0F0 solid;
           padding:0px 4px 0px 4px">0..1</td>
          <td class="hierarchy" style="vertical-align: top; text-align : left; background-color: white; border: 0px #F0F0F0 solid;
           padding:0px 4px 0px 4px">
            <a href="datatypes.html#markdown">markdown</a>
          </td>
          <td class="hierarchy" style="vertical-align: top; text-align : left; background-color: white; border: 0px #F0F0F0 solid;
           padding:0px 4px 0px 4px">Why this structure definition is defined</td>
        </tr>

        <tr style="border: 0px #F0F0F0 solid; padding:0px; vertical-align: top; background-color: white;">
          <td class="hierarchy" style="vertical-align: top; text-align : left; background-color: white; border: 0px #F0F0F0 solid;
           padding:0px 4px 0px 4px; white-space: nowrap; background-image: url(data: image/png;base64,iVBORw0KG
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          sPVYVAgIJrA/sAAAAASUVORK5CYII=)">
            <img alt="." class="hierarchy" src="data: image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAAWCAYAAAABxvaqAAAACXBIWXMAAAsTAAALEwEAmpwYAAAAB
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            <img alt="." class="hierarchy" src="data: image/png;base64,iVBORw0KGgoAAAANSUhEUgAAABAAAAAWCAYAAADJqhx8AAAACXBIWXMAAAsTAAALEwEAmpwYAAAAB
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            <img alt="." class="hierarchy" src="data: image/png;base64,iVBORw0KGgoAAAANSUhEUgAAABAAAAAQCAYAAAAf8/9hAAAABmJLR0QA/wD/AP+gvaeTAAAACXBIW
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            <span title="StructureDefinition.copyright : A copyright statement relating to the structure definition
             and/or its contents. Copyright statements are generally legal restrictions on the use
             and publishing of the structure definition.">copyright</span>
            <a name="StructureDefinition.copyright"> </a>
          </td>
          <td class="hierarchy" style="vertical-align: top; text-align : left; background-color: white; border: 0px #F0F0F0 solid;
           padding:0px 4px 0px 4px"/>
          <td class="hierarchy" style="vertical-align: top; text-align : left; background-color: white; border: 0px #F0F0F0 solid;
           padding:0px 4px 0px 4px">0..1</td>
          <td class="hierarchy" style="vertical-align: top; text-align : left; background-color: white; border: 0px #F0F0F0 solid;
           padding:0px 4px 0px 4px">
            <a href="datatypes.html#markdown">markdown</a>
          </td>
          <td class="hierarchy" style="vertical-align: top; text-align : left; background-color: white; border: 0px #F0F0F0 solid;
           padding:0px 4px 0px 4px">Use and/or publishing restrictions</td>
        </tr>

        <tr style="border: 0px #F0F0F0 solid; padding:0px; vertical-align: top; background-color: white;">
          <td class="hierarchy" style="vertical-align: top; text-align : left; background-color: white; border: 0px #F0F0F0 solid;
           padding:0px 4px 0px 4px; white-space: nowrap; background-image: url(data: image/png;base64,iVBORw0KG
          goAAAANSUhEUgAAAyAAAAACCAYAAACg/LjIAAAAL0lEQVR42u3XsQ0AQAgCQHdl/xn8jxvYWB3JlTR0VJLa+OltBwAAYP6EEQAAgC
          sPVYVAgIJrA/sAAAAASUVORK5CYII=)">
            <img alt="." class="hierarchy" src="data: image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAAWCAYAAAABxvaqAAAACXBIWXMAAAsTAAALEwEAmpwYAAAAB
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            NdCABMPwMo2ctnoQAAAABJRU5ErkJggg==" style="background-color: inherit"/>
            <img alt="." class="hierarchy" src="data: image/png;base64,iVBORw0KGgoAAAANSUhEUgAAABAAAAAWCAYAAADJqhx8AAAACXBIWXMAAAsTAAALEwEAmpwYAAAAB
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            <img alt="." class="hierarchy" src="data: image/png;base64,R0lGODlhEAAQAOZ/APrkusOiYvvfqbiXWaV2G+jGhdq1b8GgYf3v1frw3vTUlsWkZNewbcSjY/DQk
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            UPvowat8Ivvgq/Pbrvzgq/PguvrgrqN0Gda2evfYm9+7d/rpw9q6e/LSku/Rl/XVl/LSlfrkt+zVqe7Wqv3x1/bNffbOf59wFdS6i
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            FgY9loiRA4dToTYnsOxg8CBGHE6ICvEYQ4AKzkidfgoKBAA7" style="background-color: white; background-color: inherit" title="Data Type"/> 
            <span title="StructureDefinition.keyword : A set of key words or terms from external terminologies
             that may be used to assist with indexing and searching of templates.">keyword</span>
            <a name="StructureDefinition.keyword"> </a>
          </td>
          <td class="hierarchy" style="vertical-align: top; text-align : left; background-color: white; border: 0px #F0F0F0 solid;
           padding:0px 4px 0px 4px">
            <span style="padding: 3px" title="This element is included in summaries">Σ</span>
          </td>
          <td class="hierarchy" style="vertical-align: top; text-align : left; background-color: white; border: 0px #F0F0F0 solid;
           padding:0px 4px 0px 4px">0..*</td>
          <td class="hierarchy" style="vertical-align: top; text-align : left; background-color: white; border: 0px #F0F0F0 solid;
           padding:0px 4px 0px 4px">
            <a href="datatypes.html#Coding">Coding</a>
          </td>
          <td class="hierarchy" style="vertical-align: top; text-align : left; background-color: white; border: 0px #F0F0F0 solid;
           padding:0px 4px 0px 4px">Assist with indexing and finding
            <br/>
            <a href="valueset-profile-code.html" title="Codes for the meaning of the defined structure (SNOMED CT and LOINC codes, as an example).">Structure Definition Codes</a> (
            <a href="terminologies.html#example" title="Instances are not expected or even encouraged to draw from the specified value set.  The
             value set merely provides examples of the types of concepts intended to be included.">Example</a>)
          </td>
        </tr>

        <tr style="border: 0px #F0F0F0 solid; padding:0px; vertical-align: top; background-color: white;">
          <td class="hierarchy" style="vertical-align: top; text-align : left; background-color: white; border: 0px #F0F0F0 solid;
           padding:0px 4px 0px 4px; white-space: nowrap; background-image: url(data: image/png;base64,iVBORw0KG
          goAAAANSUhEUgAAAyAAAAACCAYAAACg/LjIAAAAL0lEQVR42u3XsQ0AQAgCQHdl/xn8jxvYWB3JlTR0VJLa+OltBwAAYP6EEQAAgC
          sPVYVAgIJrA/sAAAAASUVORK5CYII=)">
            <img alt="." class="hierarchy" src="data: image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAAWCAYAAAABxvaqAAAACXBIWXMAAAsTAAALEwEAmpwYAAAAB
            3RJTUUH3wYeFzIs1vtcMQAAAB1pVFh0Q29tbWVudAAAAAAAQ3JlYXRlZCB3aXRoIEdJTVBkLmUHAAAAE0lEQVQI12P4//8/AxMDAw
            NdCABMPwMo2ctnoQAAAABJRU5ErkJggg==" style="background-color: inherit"/>
            <img alt="." class="hierarchy" src="data: image/png;base64,iVBORw0KGgoAAAANSUhEUgAAABAAAAAWCAYAAADJqhx8AAAACXBIWXMAAAsTAAALEwEAmpwYAAAAB
            3RJTUUH3wYeFzI3XJ6V3QAAAB1pVFh0Q29tbWVudAAAAAAAQ3JlYXRlZCB3aXRoIEdJTVBkLmUHAAAANklEQVQ4y+2RsQ0AIAzDav
            7/2VzQwoCY4iWbZSmo1QGoUgNMghvWaIejPQW/CrrNCylIwcOCDYfLNRcNer4SAAAAAElFTkSuQmCC" style="background-color: inherit"/>
            <img alt="." class="hierarchy" src="data: image/png;base64,iVBORw0KGgoAAAANSUhEUgAAABAAAAAQCAYAAAAf8/9hAAAABmJLR0QA/wD/AP+gvaeTAAAACXBIW
            XMAAAsTAAALEwEAmpwYAAAAB3RJTUUH3gYBFzI0BrFQCwAAAERJREFUOMtj/P//PwMlgImBQjDwBrCcOnWKokBgYWBgYDCU+06W5i
            8MUggvnH/EOVJjAW4AuQHJ+O75LYqikXE0LzAAALePEntTkEoSAAAAAElFTkSuQmCC" style="background-color: white; background-color: inherit" title="Primitive Data Type"/> 
            <span title="StructureDefinition.fhirVersion : The version of the FHIR specification on which this
             StructureDefinition is based - this is the formal version of the specification, without
             the revision number, e.g. [publication].[major].[minor], which is 1.8.0 for this version.">fhirVersion</span>
            <a name="StructureDefinition.fhirVersion"> </a>
          </td>
          <td class="hierarchy" style="vertical-align: top; text-align : left; background-color: white; border: 0px #F0F0F0 solid;
           padding:0px 4px 0px 4px">
            <span style="padding: 3px" title="This element is included in summaries">Σ</span>
          </td>
          <td class="hierarchy" style="vertical-align: top; text-align : left; background-color: white; border: 0px #F0F0F0 solid;
           padding:0px 4px 0px 4px">0..1</td>
          <td class="hierarchy" style="vertical-align: top; text-align : left; background-color: white; border: 0px #F0F0F0 solid;
           padding:0px 4px 0px 4px">
            <a href="datatypes.html#id">id</a>
          </td>
          <td class="hierarchy" style="vertical-align: top; text-align : left; background-color: white; border: 0px #F0F0F0 solid;
           padding:0px 4px 0px 4px">FHIR Version this StructureDefinition targets</td>
        </tr>

        <tr style="border: 0px #F0F0F0 solid; padding:0px; vertical-align: top; background-color: white;">
          <td class="hierarchy" style="vertical-align: top; text-align : left; background-color: white; border: 0px #F0F0F0 solid;
           padding:0px 4px 0px 4px; white-space: nowrap; background-image: url(data: image/png;base64,iVBORw0KG
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          sPVYVAgIJrA/sAAAAASUVORK5CYII=)">
            <img alt="." class="hierarchy" src="data: image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAAWCAYAAAABxvaqAAAACXBIWXMAAAsTAAALEwEAmpwYAAAAB
            3RJTUUH3wYeFzIs1vtcMQAAAB1pVFh0Q29tbWVudAAAAAAAQ3JlYXRlZCB3aXRoIEdJTVBkLmUHAAAAE0lEQVQI12P4//8/AxMDAw
            NdCABMPwMo2ctnoQAAAABJRU5ErkJggg==" style="background-color: inherit"/>
            <img alt="." class="hierarchy" src="data: image/png;base64,iVBORw0KGgoAAAANSUhEUgAAABAAAAAWCAYAAADJqhx8AAAACXBIWXMAAAsTAAALEwEAmpwYAAAAB
            3RJTUUH3wYeFzI3XJ6V3QAAAB1pVFh0Q29tbWVudAAAAAAAQ3JlYXRlZCB3aXRoIEdJTVBkLmUHAAAANklEQVQ4y+2RsQ0AIAzDav
            7/2VzQwoCY4iWbZSmo1QGoUgNMghvWaIejPQW/CrrNCylIwcOCDYfLNRcNer4SAAAAAElFTkSuQmCC" style="background-color: inherit"/>
            <img alt="." class="hierarchy" src="data: image/png;base64,R0lGODlhEAAQAMQfAOvGUf7ztuvPMf/78/fkl/Pbg+u8Rvjqteu2Pf3zxPz36Pz0z+vTmPzurPvuw
            /npofbjquvNefHVduuyN+uuMu3Oafbgjfnqvf/3zv/3xevPi+vRjP/20/bmsP///////yH5BAEAAB8ALAAAAAAQABAAAAV24CeOZG
            mepqeqqOgxjBZFa+19r4ftWQUAgqDgltthMshMIJAZ4jYDHsBARSAmFOJvq+g6HIdEFgcYmBWNxoNAsDjGHgBnmV5bCoUDHLBIq9s
            FEhIdcAYJdYASFRUQhQkLCwkOFwcdEBAXhVabE52ecDahKy0oIQA7" style="background-color: white; background-color: inherit" title="Element"/> 
            <span title="StructureDefinition.mapping : An external specification that the content is mapped to.">mapping</span>
            <a name="StructureDefinition.mapping"> </a>
          </td>
          <td class="hierarchy" style="vertical-align: top; text-align : left; background-color: white; border: 0px #F0F0F0 solid;
           padding:0px 4px 0px 4px">
            <span style="padding: 3px" title="This element has or is affected by some invariants">I</span>
          </td>
          <td class="hierarchy" style="vertical-align: top; text-align : left; background-color: white; border: 0px #F0F0F0 solid;
           padding:0px 4px 0px 4px">0..*</td>
          <td class="hierarchy" style="vertical-align: top; text-align : left; background-color: white; border: 0px #F0F0F0 solid;
           padding:0px 4px 0px 4px">
            <a href="backboneelement.html">BackboneElement</a>
          </td>
          <td class="hierarchy" style="vertical-align: top; text-align : left; background-color: white; border: 0px #F0F0F0 solid;
           padding:0px 4px 0px 4px">External specification that the content is mapped to
            <br/>
            <span style="font-style: italic" title="sdf-2">Must have at least a name or a uri (or both)</span>
          </td>
        </tr>

        <tr style="border: 0px #F0F0F0 solid; padding:0px; vertical-align: top; background-color: white;">
          <td class="hierarchy" style="vertical-align: top; text-align : left; background-color: white; border: 0px #F0F0F0 solid;
           padding:0px 4px 0px 4px; white-space: nowrap; background-image: url(data: image/png;base64,iVBORw0KG
          goAAAANSUhEUgAAAyAAAAACCAYAAACg/LjIAAAAMElEQVR42u3QwQkAMAwDsezq/WdoskKgFAoy6HkfV5LamJ1tc7MHAAD+5QQAAO
          CZBkurQFbnaRSlAAAAAElFTkSuQmCC)">
            <img alt="." class="hierarchy" src="data: image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAAWCAYAAAABxvaqAAAACXBIWXMAAAsTAAALEwEAmpwYAAAAB
            3RJTUUH3wYeFzIs1vtcMQAAAB1pVFh0Q29tbWVudAAAAAAAQ3JlYXRlZCB3aXRoIEdJTVBkLmUHAAAAE0lEQVQI12P4//8/AxMDAw
            NdCABMPwMo2ctnoQAAAABJRU5ErkJggg==" style="background-color: inherit"/>
            <img alt="." class="hierarchy" src="data: image/png;base64,iVBORw0KGgoAAAANSUhEUgAAABAAAAAWCAYAAADJqhx8AAAACXBIWXMAAAsTAAALEwEAmpwYAAAAB
            3RJTUUH3wYeFzMPbYccAgAAAB1pVFh0Q29tbWVudAAAAAAAQ3JlYXRlZCB3aXRoIEdJTVBkLmUHAAAAMElEQVQ4y+3OQREAIBDDwA
            v+PQcFFN5MIyCzqHMKUGVCpMFLK97heq+gggoq+EiwAVjvMhFGmlEUAAAAAElFTkSuQmCC" style="background-color: inherit"/>
            <img alt="." class="hierarchy" src="data: image/png;base64,iVBORw0KGgoAAAANSUhEUgAAABAAAAAWCAYAAADJqhx8AAAACXBIWXMAAAsTAAALEwEAmpwYAAAAB
            3RJTUUH3wYeFzI3XJ6V3QAAAB1pVFh0Q29tbWVudAAAAAAAQ3JlYXRlZCB3aXRoIEdJTVBkLmUHAAAANklEQVQ4y+2RsQ0AIAzDav
            7/2VzQwoCY4iWbZSmo1QGoUgNMghvWaIejPQW/CrrNCylIwcOCDYfLNRcNer4SAAAAAElFTkSuQmCC" style="background-color: inherit"/>
            <img alt="." class="hierarchy" src="data: image/png;base64,iVBORw0KGgoAAAANSUhEUgAAABAAAAAQCAYAAAAf8/9hAAAABmJLR0QA/wD/AP+gvaeTAAAACXBIW
            XMAAAsTAAALEwEAmpwYAAAAB3RJTUUH3gYBFzI0BrFQCwAAAERJREFUOMtj/P//PwMlgImBQjDwBrCcOnWKokBgYWBgYDCU+06W5i
            8MUggvnH/EOVJjAW4AuQHJ+O75LYqikXE0LzAAALePEntTkEoSAAAAAElFTkSuQmCC" style="background-color: white; background-color: inherit" title="Primitive Data Type"/> 
            <span title="StructureDefinition.mapping.identity : An Internal id that is used to identify this mapping
             set when specific mappings are made.">identity</span>
            <a name="StructureDefinition.mapping.identity"> </a>
          </td>
          <td class="hierarchy" style="vertical-align: top; text-align : left; background-color: white; border: 0px #F0F0F0 solid;
           padding:0px 4px 0px 4px"/>
          <td class="hierarchy" style="vertical-align: top; text-align : left; background-color: white; border: 0px #F0F0F0 solid;
           padding:0px 4px 0px 4px">1..1</td>
          <td class="hierarchy" style="vertical-align: top; text-align : left; background-color: white; border: 0px #F0F0F0 solid;
           padding:0px 4px 0px 4px">
            <a href="datatypes.html#id">id</a>
          </td>
          <td class="hierarchy" style="vertical-align: top; text-align : left; background-color: white; border: 0px #F0F0F0 solid;
           padding:0px 4px 0px 4px">Internal id when this mapping is used</td>
        </tr>

        <tr style="border: 0px #F0F0F0 solid; padding:0px; vertical-align: top; background-color: white;">
          <td class="hierarchy" style="vertical-align: top; text-align : left; background-color: white; border: 0px #F0F0F0 solid;
           padding:0px 4px 0px 4px; white-space: nowrap; background-image: url(data: image/png;base64,iVBORw0KG
          goAAAANSUhEUgAAAyAAAAACCAYAAACg/LjIAAAAMElEQVR42u3QwQkAMAwDsezq/WdoskKgFAoy6HkfV5LamJ1tc7MHAAD+5QQAAO
          CZBkurQFbnaRSlAAAAAElFTkSuQmCC)">
            <img alt="." class="hierarchy" src="data: image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAAWCAYAAAABxvaqAAAACXBIWXMAAAsTAAALEwEAmpwYAAAAB
            3RJTUUH3wYeFzIs1vtcMQAAAB1pVFh0Q29tbWVudAAAAAAAQ3JlYXRlZCB3aXRoIEdJTVBkLmUHAAAAE0lEQVQI12P4//8/AxMDAw
            NdCABMPwMo2ctnoQAAAABJRU5ErkJggg==" style="background-color: inherit"/>
            <img alt="." class="hierarchy" src="data: image/png;base64,iVBORw0KGgoAAAANSUhEUgAAABAAAAAWCAYAAADJqhx8AAAACXBIWXMAAAsTAAALEwEAmpwYAAAAB
            3RJTUUH3wYeFzMPbYccAgAAAB1pVFh0Q29tbWVudAAAAAAAQ3JlYXRlZCB3aXRoIEdJTVBkLmUHAAAAMElEQVQ4y+3OQREAIBDDwA
            v+PQcFFN5MIyCzqHMKUGVCpMFLK97heq+gggoq+EiwAVjvMhFGmlEUAAAAAElFTkSuQmCC" style="background-color: inherit"/>
            <img alt="." class="hierarchy" src="data: image/png;base64,iVBORw0KGgoAAAANSUhEUgAAABAAAAAWCAYAAADJqhx8AAAACXBIWXMAAAsTAAALEwEAmpwYAAAAB
            3RJTUUH3wYeFzI3XJ6V3QAAAB1pVFh0Q29tbWVudAAAAAAAQ3JlYXRlZCB3aXRoIEdJTVBkLmUHAAAANklEQVQ4y+2RsQ0AIAzDav
            7/2VzQwoCY4iWbZSmo1QGoUgNMghvWaIejPQW/CrrNCylIwcOCDYfLNRcNer4SAAAAAElFTkSuQmCC" style="background-color: inherit"/>
            <img alt="." class="hierarchy" src="data: image/png;base64,iVBORw0KGgoAAAANSUhEUgAAABAAAAAQCAYAAAAf8/9hAAAABmJLR0QA/wD/AP+gvaeTAAAACXBIW
            XMAAAsTAAALEwEAmpwYAAAAB3RJTUUH3gYBFzI0BrFQCwAAAERJREFUOMtj/P//PwMlgImBQjDwBrCcOnWKokBgYWBgYDCU+06W5i
            8MUggvnH/EOVJjAW4AuQHJ+O75LYqikXE0LzAAALePEntTkEoSAAAAAElFTkSuQmCC" style="background-color: white; background-color: inherit" title="Primitive Data Type"/> 
            <span title="StructureDefinition.mapping.uri : An absolute URI that identifies the specification that
             this mapping is expressed to.">uri</span>
            <a name="StructureDefinition.mapping.uri"> </a>
          </td>
          <td class="hierarchy" style="vertical-align: top; text-align : left; background-color: white; border: 0px #F0F0F0 solid;
           padding:0px 4px 0px 4px">
            <span style="padding: 3px" title="This element has or is affected by some invariants">I</span>
          </td>
          <td class="hierarchy" style="vertical-align: top; text-align : left; background-color: white; border: 0px #F0F0F0 solid;
           padding:0px 4px 0px 4px">0..1</td>
          <td class="hierarchy" style="vertical-align: top; text-align : left; background-color: white; border: 0px #F0F0F0 solid;
           padding:0px 4px 0px 4px">
            <a href="datatypes.html#uri">uri</a>
          </td>
          <td class="hierarchy" style="vertical-align: top; text-align : left; background-color: white; border: 0px #F0F0F0 solid;
           padding:0px 4px 0px 4px">Identifies what this mapping refers to</td>
        </tr>

        <tr style="border: 0px #F0F0F0 solid; padding:0px; vertical-align: top; background-color: white;">
          <td class="hierarchy" style="vertical-align: top; text-align : left; background-color: white; border: 0px #F0F0F0 solid;
           padding:0px 4px 0px 4px; white-space: nowrap; background-image: url(data: image/png;base64,iVBORw0KG
          goAAAANSUhEUgAAAyAAAAACCAYAAACg/LjIAAAAMElEQVR42u3QwQkAMAwDsezq/WdoskKgFAoy6HkfV5LamJ1tc7MHAAD+5QQAAO
          CZBkurQFbnaRSlAAAAAElFTkSuQmCC)">
            <img alt="." class="hierarchy" src="data: image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAAWCAYAAAABxvaqAAAACXBIWXMAAAsTAAALEwEAmpwYAAAAB
            3RJTUUH3wYeFzIs1vtcMQAAAB1pVFh0Q29tbWVudAAAAAAAQ3JlYXRlZCB3aXRoIEdJTVBkLmUHAAAAE0lEQVQI12P4//8/AxMDAw
            NdCABMPwMo2ctnoQAAAABJRU5ErkJggg==" style="background-color: inherit"/>
            <img alt="." class="hierarchy" src="data: image/png;base64,iVBORw0KGgoAAAANSUhEUgAAABAAAAAWCAYAAADJqhx8AAAACXBIWXMAAAsTAAALEwEAmpwYAAAAB
            3RJTUUH3wYeFzMPbYccAgAAAB1pVFh0Q29tbWVudAAAAAAAQ3JlYXRlZCB3aXRoIEdJTVBkLmUHAAAAMElEQVQ4y+3OQREAIBDDwA
            v+PQcFFN5MIyCzqHMKUGVCpMFLK97heq+gggoq+EiwAVjvMhFGmlEUAAAAAElFTkSuQmCC" style="background-color: inherit"/>
            <img alt="." class="hierarchy" src="data: image/png;base64,iVBORw0KGgoAAAANSUhEUgAAABAAAAAWCAYAAADJqhx8AAAACXBIWXMAAAsTAAALEwEAmpwYAAAAB
            3RJTUUH3wYeFzI3XJ6V3QAAAB1pVFh0Q29tbWVudAAAAAAAQ3JlYXRlZCB3aXRoIEdJTVBkLmUHAAAANklEQVQ4y+2RsQ0AIAzDav
            7/2VzQwoCY4iWbZSmo1QGoUgNMghvWaIejPQW/CrrNCylIwcOCDYfLNRcNer4SAAAAAElFTkSuQmCC" style="background-color: inherit"/>
            <img alt="." class="hierarchy" src="data: image/png;base64,iVBORw0KGgoAAAANSUhEUgAAABAAAAAQCAYAAAAf8/9hAAAABmJLR0QA/wD/AP+gvaeTAAAACXBIW
            XMAAAsTAAALEwEAmpwYAAAAB3RJTUUH3gYBFzI0BrFQCwAAAERJREFUOMtj/P//PwMlgImBQjDwBrCcOnWKokBgYWBgYDCU+06W5i
            8MUggvnH/EOVJjAW4AuQHJ+O75LYqikXE0LzAAALePEntTkEoSAAAAAElFTkSuQmCC" style="background-color: white; background-color: inherit" title="Primitive Data Type"/> 
            <span title="StructureDefinition.mapping.name : A name for the specification that is being mapped to.">name</span>
            <a name="StructureDefinition.mapping.name"> </a>
          </td>
          <td class="hierarchy" style="vertical-align: top; text-align : left; background-color: white; border: 0px #F0F0F0 solid;
           padding:0px 4px 0px 4px">
            <span style="padding: 3px" title="This element has or is affected by some invariants">I</span>
          </td>
          <td class="hierarchy" style="vertical-align: top; text-align : left; background-color: white; border: 0px #F0F0F0 solid;
           padding:0px 4px 0px 4px">0..1</td>
          <td class="hierarchy" style="vertical-align: top; text-align : left; background-color: white; border: 0px #F0F0F0 solid;
           padding:0px 4px 0px 4px">
            <a href="datatypes.html#string">string</a>
          </td>
          <td class="hierarchy" style="vertical-align: top; text-align : left; background-color: white; border: 0px #F0F0F0 solid;
           padding:0px 4px 0px 4px">Names what this mapping refers to</td>
        </tr>

        <tr style="border: 0px #F0F0F0 solid; padding:0px; vertical-align: top; background-color: white;">
          <td class="hierarchy" style="vertical-align: top; text-align : left; background-color: white; border: 0px #F0F0F0 solid;
           padding:0px 4px 0px 4px; white-space: nowrap; background-image: url(data: image/png;base64,iVBORw0KG
          goAAAANSUhEUgAAAyAAAAACCAYAAACg/LjIAAAAL0lEQVR42u3XsQ0AQAgCQHdl/xn8jxvYWB3JlTR0VJLa+OltBwAAYP6EEQAAgC
          sPVYVAgIJrA/sAAAAASUVORK5CYII=)">
            <img alt="." class="hierarchy" src="data: image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAAWCAYAAAABxvaqAAAACXBIWXMAAAsTAAALEwEAmpwYAAAAB
            3RJTUUH3wYeFzIs1vtcMQAAAB1pVFh0Q29tbWVudAAAAAAAQ3JlYXRlZCB3aXRoIEdJTVBkLmUHAAAAE0lEQVQI12P4//8/AxMDAw
            NdCABMPwMo2ctnoQAAAABJRU5ErkJggg==" style="background-color: inherit"/>
            <img alt="." class="hierarchy" src="data: image/png;base64,iVBORw0KGgoAAAANSUhEUgAAABAAAAAWCAYAAADJqhx8AAAACXBIWXMAAAsTAAALEwEAmpwYAAAAB
            3RJTUUH3wYeFzMPbYccAgAAAB1pVFh0Q29tbWVudAAAAAAAQ3JlYXRlZCB3aXRoIEdJTVBkLmUHAAAAMElEQVQ4y+3OQREAIBDDwA
            v+PQcFFN5MIyCzqHMKUGVCpMFLK97heq+gggoq+EiwAVjvMhFGmlEUAAAAAElFTkSuQmCC" style="background-color: inherit"/>
            <img alt="." class="hierarchy" src="data: image/png;base64,iVBORw0KGgoAAAANSUhEUgAAABAAAAAWCAYAAADJqhx8AAAACXBIWXMAAAsTAAALEwEAmpwYAAAAB
            3RJTUUH3wYeFzME+lXFigAAAB1pVFh0Q29tbWVudAAAAAAAQ3JlYXRlZCB3aXRoIEdJTVBkLmUHAAAANklEQVQ4y+3OsRUAIAjEUO
            L+O8cJABttJM11/x1qZAGqRBEVcNIqdWj1efDqQbb3HwwwwEfABmQUHSPM9dtDAAAAAElFTkSuQmCC" style="background-color: inherit"/>
            <img alt="." class="hierarchy" src="data: image/png;base64,iVBORw0KGgoAAAANSUhEUgAAABAAAAAQCAYAAAAf8/9hAAAABmJLR0QA/wD/AP+gvaeTAAAACXBIW
            XMAAAsTAAALEwEAmpwYAAAAB3RJTUUH3gYBFzI0BrFQCwAAAERJREFUOMtj/P//PwMlgImBQjDwBrCcOnWKokBgYWBgYDCU+06W5i
            8MUggvnH/EOVJjAW4AuQHJ+O75LYqikXE0LzAAALePEntTkEoSAAAAAElFTkSuQmCC" style="background-color: white; background-color: inherit" title="Primitive Data Type"/> 
            <span title="StructureDefinition.mapping.comments : Comments about this mapping, including version
             notes, issues, scope limitations, and other important notes for usage.">comments</span>
            <a name="StructureDefinition.mapping.comments"> </a>
          </td>
          <td class="hierarchy" style="vertical-align: top; text-align : left; background-color: white; border: 0px #F0F0F0 solid;
           padding:0px 4px 0px 4px"/>
          <td class="hierarchy" style="vertical-align: top; text-align : left; background-color: white; border: 0px #F0F0F0 solid;
           padding:0px 4px 0px 4px">0..1</td>
          <td class="hierarchy" style="vertical-align: top; text-align : left; background-color: white; border: 0px #F0F0F0 solid;
           padding:0px 4px 0px 4px">
            <a href="datatypes.html#string">string</a>
          </td>
          <td class="hierarchy" style="vertical-align: top; text-align : left; background-color: white; border: 0px #F0F0F0 solid;
           padding:0px 4px 0px 4px">Versions, Issues, Scope limitations etc.</td>
        </tr>

        <tr style="border: 0px #F0F0F0 solid; padding:0px; vertical-align: top; background-color: white;">
          <td class="hierarchy" style="vertical-align: top; text-align : left; background-color: white; border: 0px #F0F0F0 solid;
           padding:0px 4px 0px 4px; white-space: nowrap; background-image: url(data: image/png;base64,iVBORw0KG
          goAAAANSUhEUgAAAyAAAAACCAYAAACg/LjIAAAAL0lEQVR42u3XsQ0AQAgCQHdl/xn8jxvYWB3JlTR0VJLa+OltBwAAYP6EEQAAgC
          sPVYVAgIJrA/sAAAAASUVORK5CYII=)">
            <img alt="." class="hierarchy" src="data: image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAAWCAYAAAABxvaqAAAACXBIWXMAAAsTAAALEwEAmpwYAAAAB
            3RJTUUH3wYeFzIs1vtcMQAAAB1pVFh0Q29tbWVudAAAAAAAQ3JlYXRlZCB3aXRoIEdJTVBkLmUHAAAAE0lEQVQI12P4//8/AxMDAw
            NdCABMPwMo2ctnoQAAAABJRU5ErkJggg==" style="background-color: inherit"/>
            <img alt="." class="hierarchy" src="data: image/png;base64,iVBORw0KGgoAAAANSUhEUgAAABAAAAAWCAYAAADJqhx8AAAACXBIWXMAAAsTAAALEwEAmpwYAAAAB
            3RJTUUH3wYeFzI3XJ6V3QAAAB1pVFh0Q29tbWVudAAAAAAAQ3JlYXRlZCB3aXRoIEdJTVBkLmUHAAAANklEQVQ4y+2RsQ0AIAzDav
            7/2VzQwoCY4iWbZSmo1QGoUgNMghvWaIejPQW/CrrNCylIwcOCDYfLNRcNer4SAAAAAElFTkSuQmCC" style="background-color: inherit"/>
            <img alt="." class="hierarchy" src="data: image/png;base64,iVBORw0KGgoAAAANSUhEUgAAABAAAAAQCAYAAAAf8/9hAAAABmJLR0QA/wD/AP+gvaeTAAAACXBIW
            XMAAAsTAAALEwEAmpwYAAAAB3RJTUUH3gYBFzI0BrFQCwAAAERJREFUOMtj/P//PwMlgImBQjDwBrCcOnWKokBgYWBgYDCU+06W5i
            8MUggvnH/EOVJjAW4AuQHJ+O75LYqikXE0LzAAALePEntTkEoSAAAAAElFTkSuQmCC" style="background-color: white; background-color: inherit" title="Primitive Data Type"/> 
            <span title="StructureDefinition.kind : Defines the kind of structure that this definition is describing.">kind</span>
            <a name="StructureDefinition.kind"> </a>
          </td>
          <td class="hierarchy" style="vertical-align: top; text-align : left; background-color: white; border: 0px #F0F0F0 solid;
           padding:0px 4px 0px 4px">
            <span style="padding: 3px" title="This element is included in summaries">Σ</span>
          </td>
          <td class="hierarchy" style="vertical-align: top; text-align : left; background-color: white; border: 0px #F0F0F0 solid;
           padding:0px 4px 0px 4px">1..1</td>
          <td class="hierarchy" style="vertical-align: top; text-align : left; background-color: white; border: 0px #F0F0F0 solid;
           padding:0px 4px 0px 4px">
            <a href="datatypes.html#code">code</a>
          </td>
          <td class="hierarchy" style="vertical-align: top; text-align : left; background-color: white; border: 0px #F0F0F0 solid;
           padding:0px 4px 0px 4px">primitive-type | complex-type | resource | logical
            <br/>
            <a href="valueset-structure-definition-kind.html" title="Defines the type of structure that a definition is describing.">StructureDefinitionKind</a> (
            <a href="terminologies.html#required" title="To be conformant, instances of this element SHALL include a code from the specified value
             set.">Required</a>)
          </td>
        </tr>

        <tr style="border: 0px #F0F0F0 solid; padding:0px; vertical-align: top; background-color: white;">
          <td class="hierarchy" style="vertical-align: top; text-align : left; background-color: white; border: 0px #F0F0F0 solid;
           padding:0px 4px 0px 4px; white-space: nowrap; background-image: url(data: image/png;base64,iVBORw0KG
          goAAAANSUhEUgAAAyAAAAACCAYAAACg/LjIAAAAL0lEQVR42u3XsQ0AQAgCQHdl/xn8jxvYWB3JlTR0VJLa+OltBwAAYP6EEQAAgC
          sPVYVAgIJrA/sAAAAASUVORK5CYII=)">
            <img alt="." class="hierarchy" src="data: image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAAWCAYAAAABxvaqAAAACXBIWXMAAAsTAAALEwEAmpwYAAAAB
            3RJTUUH3wYeFzIs1vtcMQAAAB1pVFh0Q29tbWVudAAAAAAAQ3JlYXRlZCB3aXRoIEdJTVBkLmUHAAAAE0lEQVQI12P4//8/AxMDAw
            NdCABMPwMo2ctnoQAAAABJRU5ErkJggg==" style="background-color: inherit"/>
            <img alt="." class="hierarchy" src="data: image/png;base64,iVBORw0KGgoAAAANSUhEUgAAABAAAAAWCAYAAADJqhx8AAAACXBIWXMAAAsTAAALEwEAmpwYAAAAB
            3RJTUUH3wYeFzI3XJ6V3QAAAB1pVFh0Q29tbWVudAAAAAAAQ3JlYXRlZCB3aXRoIEdJTVBkLmUHAAAANklEQVQ4y+2RsQ0AIAzDav
            7/2VzQwoCY4iWbZSmo1QGoUgNMghvWaIejPQW/CrrNCylIwcOCDYfLNRcNer4SAAAAAElFTkSuQmCC" style="background-color: inherit"/>
            <img alt="." class="hierarchy" src="data: image/png;base64,iVBORw0KGgoAAAANSUhEUgAAABAAAAAQCAYAAAAf8/9hAAAABmJLR0QA/wD/AP+gvaeTAAAACXBIW
            XMAAAsTAAALEwEAmpwYAAAAB3RJTUUH3gYBFzI0BrFQCwAAAERJREFUOMtj/P//PwMlgImBQjDwBrCcOnWKokBgYWBgYDCU+06W5i
            8MUggvnH/EOVJjAW4AuQHJ+O75LYqikXE0LzAAALePEntTkEoSAAAAAElFTkSuQmCC" style="background-color: white; background-color: inherit" title="Primitive Data Type"/> 
            <span title="StructureDefinition.abstract : Whether structure this definition describes is abstract
             or not  - that is, whether the structure is not intended to be instantiated. For Resources
             and Data types, abstract types will never be exchanged  between systems.">abstract</span>
            <a name="StructureDefinition.abstract"> </a>
          </td>
          <td class="hierarchy" style="vertical-align: top; text-align : left; background-color: white; border: 0px #F0F0F0 solid;
           padding:0px 4px 0px 4px">
            <span style="padding: 3px" title="This element is included in summaries">Σ</span>
          </td>
          <td class="hierarchy" style="vertical-align: top; text-align : left; background-color: white; border: 0px #F0F0F0 solid;
           padding:0px 4px 0px 4px">1..1</td>
          <td class="hierarchy" style="vertical-align: top; text-align : left; background-color: white; border: 0px #F0F0F0 solid;
           padding:0px 4px 0px 4px">
            <a href="datatypes.html#boolean">boolean</a>
          </td>
          <td class="hierarchy" style="vertical-align: top; text-align : left; background-color: white; border: 0px #F0F0F0 solid;
           padding:0px 4px 0px 4px">Whether the structure is abstract</td>
        </tr>

        <tr style="border: 0px #F0F0F0 solid; padding:0px; vertical-align: top; background-color: white;">
          <td class="hierarchy" style="vertical-align: top; text-align : left; background-color: white; border: 0px #F0F0F0 solid;
           padding:0px 4px 0px 4px; white-space: nowrap; background-image: url(data: image/png;base64,iVBORw0KG
          goAAAANSUhEUgAAAyAAAAACCAYAAACg/LjIAAAAL0lEQVR42u3XsQ0AQAgCQHdl/xn8jxvYWB3JlTR0VJLa+OltBwAAYP6EEQAAgC
          sPVYVAgIJrA/sAAAAASUVORK5CYII=)">
            <img alt="." class="hierarchy" src="data: image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAAWCAYAAAABxvaqAAAACXBIWXMAAAsTAAALEwEAmpwYAAAAB
            3RJTUUH3wYeFzIs1vtcMQAAAB1pVFh0Q29tbWVudAAAAAAAQ3JlYXRlZCB3aXRoIEdJTVBkLmUHAAAAE0lEQVQI12P4//8/AxMDAw
            NdCABMPwMo2ctnoQAAAABJRU5ErkJggg==" style="background-color: inherit"/>
            <img alt="." class="hierarchy" src="data: image/png;base64,iVBORw0KGgoAAAANSUhEUgAAABAAAAAWCAYAAADJqhx8AAAACXBIWXMAAAsTAAALEwEAmpwYAAAAB
            3RJTUUH3wYeFzI3XJ6V3QAAAB1pVFh0Q29tbWVudAAAAAAAQ3JlYXRlZCB3aXRoIEdJTVBkLmUHAAAANklEQVQ4y+2RsQ0AIAzDav
            7/2VzQwoCY4iWbZSmo1QGoUgNMghvWaIejPQW/CrrNCylIwcOCDYfLNRcNer4SAAAAAElFTkSuQmCC" style="background-color: inherit"/>
            <img alt="." class="hierarchy" src="data: image/png;base64,iVBORw0KGgoAAAANSUhEUgAAABAAAAAQCAYAAAAf8/9hAAAABmJLR0QA/wD/AP+gvaeTAAAACXBIW
            XMAAAsTAAALEwEAmpwYAAAAB3RJTUUH3gYBFzI0BrFQCwAAAERJREFUOMtj/P//PwMlgImBQjDwBrCcOnWKokBgYWBgYDCU+06W5i
            8MUggvnH/EOVJjAW4AuQHJ+O75LYqikXE0LzAAALePEntTkEoSAAAAAElFTkSuQmCC" style="background-color: white; background-color: inherit" title="Primitive Data Type"/> 
            <span title="StructureDefinition.contextType : If this is an extension, Identifies the context within
             FHIR resources where the extension can be used.">contextType</span>
            <a name="StructureDefinition.contextType"> </a>
          </td>
          <td class="hierarchy" style="vertical-align: top; text-align : left; background-color: white; border: 0px #F0F0F0 solid;
           padding:0px 4px 0px 4px">
            <span style="padding: 3px" title="This element is included in summaries">Σ</span>
            <span style="padding: 3px" title="This element has or is affected by some invariants">I</span>
          </td>
          <td class="hierarchy" style="vertical-align: top; text-align : left; background-color: white; border: 0px #F0F0F0 solid;
           padding:0px 4px 0px 4px">0..1</td>
          <td class="hierarchy" style="vertical-align: top; text-align : left; background-color: white; border: 0px #F0F0F0 solid;
           padding:0px 4px 0px 4px">
            <a href="datatypes.html#code">code</a>
          </td>
          <td class="hierarchy" style="vertical-align: top; text-align : left; background-color: white; border: 0px #F0F0F0 solid;
           padding:0px 4px 0px 4px">resource | datatype | extension
            <br/>
            <a href="valueset-extension-context.html" title="How an extension context is interpreted.">ExtensionContext</a> (
            <a href="terminologies.html#required" title="To be conformant, instances of this element SHALL include a code from the specified value
             set.">Required</a>)
          </td>
        </tr>

        <tr style="border: 0px #F0F0F0 solid; padding:0px; vertical-align: top; background-color: white;">
          <td class="hierarchy" style="vertical-align: top; text-align : left; background-color: white; border: 0px #F0F0F0 solid;
           padding:0px 4px 0px 4px; white-space: nowrap; background-image: url(data: image/png;base64,iVBORw0KG
          goAAAANSUhEUgAAAyAAAAACCAYAAACg/LjIAAAAL0lEQVR42u3XsQ0AQAgCQHdl/xn8jxvYWB3JlTR0VJLa+OltBwAAYP6EEQAAgC
          sPVYVAgIJrA/sAAAAASUVORK5CYII=)">
            <img alt="." class="hierarchy" src="data: image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAAWCAYAAAABxvaqAAAACXBIWXMAAAsTAAALEwEAmpwYAAAAB
            3RJTUUH3wYeFzIs1vtcMQAAAB1pVFh0Q29tbWVudAAAAAAAQ3JlYXRlZCB3aXRoIEdJTVBkLmUHAAAAE0lEQVQI12P4//8/AxMDAw
            NdCABMPwMo2ctnoQAAAABJRU5ErkJggg==" style="background-color: inherit"/>
            <img alt="." class="hierarchy" src="data: image/png;base64,iVBORw0KGgoAAAANSUhEUgAAABAAAAAWCAYAAADJqhx8AAAACXBIWXMAAAsTAAALEwEAmpwYAAAAB
            3RJTUUH3wYeFzI3XJ6V3QAAAB1pVFh0Q29tbWVudAAAAAAAQ3JlYXRlZCB3aXRoIEdJTVBkLmUHAAAANklEQVQ4y+2RsQ0AIAzDav
            7/2VzQwoCY4iWbZSmo1QGoUgNMghvWaIejPQW/CrrNCylIwcOCDYfLNRcNer4SAAAAAElFTkSuQmCC" style="background-color: inherit"/>
            <img alt="." class="hierarchy" src="data: image/png;base64,iVBORw0KGgoAAAANSUhEUgAAABAAAAAQCAYAAAAf8/9hAAAABmJLR0QA/wD/AP+gvaeTAAAACXBIW
            XMAAAsTAAALEwEAmpwYAAAAB3RJTUUH3gYBFzI0BrFQCwAAAERJREFUOMtj/P//PwMlgImBQjDwBrCcOnWKokBgYWBgYDCU+06W5i
            8MUggvnH/EOVJjAW4AuQHJ+O75LYqikXE0LzAAALePEntTkEoSAAAAAElFTkSuQmCC" style="background-color: white; background-color: inherit" title="Primitive Data Type"/> 
            <span title="StructureDefinition.context : Identifies the types of resource or data type elements to
             which the extension can be applied.">context</span>
            <a name="StructureDefinition.context"> </a>
          </td>
          <td class="hierarchy" style="vertical-align: top; text-align : left; background-color: white; border: 0px #F0F0F0 solid;
           padding:0px 4px 0px 4px">
            <span style="padding: 3px" title="This element is included in summaries">Σ</span>
            <span style="padding: 3px" title="This element has or is affected by some invariants">I</span>
          </td>
          <td class="hierarchy" style="vertical-align: top; text-align : left; background-color: white; border: 0px #F0F0F0 solid;
           padding:0px 4px 0px 4px">0..*</td>
          <td class="hierarchy" style="vertical-align: top; text-align : left; background-color: white; border: 0px #F0F0F0 solid;
           padding:0px 4px 0px 4px">
            <a href="datatypes.html#string">string</a>
          </td>
          <td class="hierarchy" style="vertical-align: top; text-align : left; background-color: white; border: 0px #F0F0F0 solid;
           padding:0px 4px 0px 4px">Where the extension can be used in instances</td>
        </tr>

        <tr style="border: 0px #F0F0F0 solid; padding:0px; vertical-align: top; background-color: white;">
          <td class="hierarchy" style="vertical-align: top; text-align : left; background-color: white; border: 0px #F0F0F0 solid;
           padding:0px 4px 0px 4px; white-space: nowrap; background-image: url(data: image/png;base64,iVBORw0KG
          goAAAANSUhEUgAAAyAAAAACCAYAAACg/LjIAAAAL0lEQVR42u3XsQ0AQAgCQHdl/xn8jxvYWB3JlTR0VJLa+OltBwAAYP6EEQAAgC
          sPVYVAgIJrA/sAAAAASUVORK5CYII=)">
            <img alt="." class="hierarchy" src="data: image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAAWCAYAAAABxvaqAAAACXBIWXMAAAsTAAALEwEAmpwYAAAAB
            3RJTUUH3wYeFzIs1vtcMQAAAB1pVFh0Q29tbWVudAAAAAAAQ3JlYXRlZCB3aXRoIEdJTVBkLmUHAAAAE0lEQVQI12P4//8/AxMDAw
            NdCABMPwMo2ctnoQAAAABJRU5ErkJggg==" style="background-color: inherit"/>
            <img alt="." class="hierarchy" src="data: image/png;base64,iVBORw0KGgoAAAANSUhEUgAAABAAAAAWCAYAAADJqhx8AAAACXBIWXMAAAsTAAALEwEAmpwYAAAAB
            3RJTUUH3wYeFzI3XJ6V3QAAAB1pVFh0Q29tbWVudAAAAAAAQ3JlYXRlZCB3aXRoIEdJTVBkLmUHAAAANklEQVQ4y+2RsQ0AIAzDav
            7/2VzQwoCY4iWbZSmo1QGoUgNMghvWaIejPQW/CrrNCylIwcOCDYfLNRcNer4SAAAAAElFTkSuQmCC" style="background-color: inherit"/>
            <img alt="." class="hierarchy" src="data: image/png;base64,iVBORw0KGgoAAAANSUhEUgAAABAAAAAQCAYAAAAf8/9hAAAABmJLR0QA/wD/AP+gvaeTAAAACXBIW
            XMAAAsTAAALEwEAmpwYAAAAB3RJTUUH3gYBFzI0BrFQCwAAAERJREFUOMtj/P//PwMlgImBQjDwBrCcOnWKokBgYWBgYDCU+06W5i
            8MUggvnH/EOVJjAW4AuQHJ+O75LYqikXE0LzAAALePEntTkEoSAAAAAElFTkSuQmCC" style="background-color: white; background-color: inherit" title="Primitive Data Type"/> 
            <span title="StructureDefinition.contextInvariant : A set of rules as Fluent Invariants about when
             the extension can be used (e.g. co-occurance variants for the extension).">contextInvariant</span>
            <a name="StructureDefinition.contextInvariant"> </a>
          </td>
          <td class="hierarchy" style="vertical-align: top; text-align : left; background-color: white; border: 0px #F0F0F0 solid;
           padding:0px 4px 0px 4px">
            <span style="padding: 3px" title="This element is included in summaries">Σ</span>
            <span style="padding: 3px" title="This element has or is affected by some invariants">I</span>
          </td>
          <td class="hierarchy" style="vertical-align: top; text-align : left; background-color: white; border: 0px #F0F0F0 solid;
           padding:0px 4px 0px 4px">0..*</td>
          <td class="hierarchy" style="vertical-align: top; text-align : left; background-color: white; border: 0px #F0F0F0 solid;
           padding:0px 4px 0px 4px">
            <a href="datatypes.html#string">string</a>
          </td>
          <td class="hierarchy" style="vertical-align: top; text-align : left; background-color: white; border: 0px #F0F0F0 solid;
           padding:0px 4px 0px 4px">FluentPath invariants - when the extension can be used</td>
        </tr>

        <tr style="border: 0px #F0F0F0 solid; padding:0px; vertical-align: top; background-color: white;">
          <td class="hierarchy" style="vertical-align: top; text-align : left; background-color: white; border: 0px #F0F0F0 solid;
           padding:0px 4px 0px 4px; white-space: nowrap; background-image: url(data: image/png;base64,iVBORw0KG
          goAAAANSUhEUgAAAyAAAAACCAYAAACg/LjIAAAAL0lEQVR42u3XsQ0AQAgCQHdl/xn8jxvYWB3JlTR0VJLa+OltBwAAYP6EEQAAgC
          sPVYVAgIJrA/sAAAAASUVORK5CYII=)">
            <img alt="." class="hierarchy" src="data: image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAAWCAYAAAABxvaqAAAACXBIWXMAAAsTAAALEwEAmpwYAAAAB
            3RJTUUH3wYeFzIs1vtcMQAAAB1pVFh0Q29tbWVudAAAAAAAQ3JlYXRlZCB3aXRoIEdJTVBkLmUHAAAAE0lEQVQI12P4//8/AxMDAw
            NdCABMPwMo2ctnoQAAAABJRU5ErkJggg==" style="background-color: inherit"/>
            <img alt="." class="hierarchy" src="data: image/png;base64,iVBORw0KGgoAAAANSUhEUgAAABAAAAAWCAYAAADJqhx8AAAACXBIWXMAAAsTAAALEwEAmpwYAAAAB
            3RJTUUH3wYeFzI3XJ6V3QAAAB1pVFh0Q29tbWVudAAAAAAAQ3JlYXRlZCB3aXRoIEdJTVBkLmUHAAAANklEQVQ4y+2RsQ0AIAzDav
            7/2VzQwoCY4iWbZSmo1QGoUgNMghvWaIejPQW/CrrNCylIwcOCDYfLNRcNer4SAAAAAElFTkSuQmCC" style="background-color: inherit"/>
            <img alt="." class="hierarchy" src="data: image/png;base64,iVBORw0KGgoAAAANSUhEUgAAABAAAAAQCAYAAAAf8/9hAAAABmJLR0QA/wD/AP+gvaeTAAAACXBIW
            XMAAAsTAAALEwEAmpwYAAAAB3RJTUUH3gYBFzI0BrFQCwAAAERJREFUOMtj/P//PwMlgImBQjDwBrCcOnWKokBgYWBgYDCU+06W5i
            8MUggvnH/EOVJjAW4AuQHJ+O75LYqikXE0LzAAALePEntTkEoSAAAAAElFTkSuQmCC" style="background-color: white; background-color: inherit" title="Primitive Data Type"/> 
            <span title="StructureDefinition.type : The type this structure is describes. If the derivation kind
             is 'specialization' then this is the master definition for a type, and there is always
             one of these (a data type, an extension, a resource, including abstract ones). Otherwise
             the structure definition is a constraint on the stated type (and in this case, the type
             cannot be an abstract type).">type</span>
            <a name="StructureDefinition.type"> </a>
          </td>
          <td class="hierarchy" style="vertical-align: top; text-align : left; background-color: white; border: 0px #F0F0F0 solid;
           padding:0px 4px 0px 4px">
            <span style="padding: 3px" title="This element is included in summaries">Σ</span>
            <span style="padding: 3px" title="This element has or is affected by some invariants">I</span>
          </td>
          <td class="hierarchy" style="vertical-align: top; text-align : left; background-color: white; border: 0px #F0F0F0 solid;
           padding:0px 4px 0px 4px">1..1</td>
          <td class="hierarchy" style="vertical-align: top; text-align : left; background-color: white; border: 0px #F0F0F0 solid;
           padding:0px 4px 0px 4px">
            <a href="datatypes.html#code">code</a>
          </td>
          <td class="hierarchy" style="vertical-align: top; text-align : left; background-color: white; border: 0px #F0F0F0 solid;
           padding:0px 4px 0px 4px">Type defined or constrained by this structure
            <br/>
            <a href="valueset-defined-types.html" title="Either a resource or a data type, including logical model types">FHIRDefinedType</a> (
            <a href="terminologies.html#extensible" title="To be conformant, instances of this element SHALL include a code from the specified value
             set if any of the codes within the value set can apply to the concept being communicated.
              If the value set does not cover the concept (based on human review), alternate codings
             (or, data type allowing, text) may be included instead.">Extensible</a>)
          </td>
        </tr>

        <tr style="border: 0px #F0F0F0 solid; padding:0px; vertical-align: top; background-color: white;">
          <td class="hierarchy" style="vertical-align: top; text-align : left; background-color: white; border: 0px #F0F0F0 solid;
           padding:0px 4px 0px 4px; white-space: nowrap; background-image: url(data: image/png;base64,iVBORw0KG
          goAAAANSUhEUgAAAyAAAAACCAYAAACg/LjIAAAAL0lEQVR42u3XsQ0AQAgCQHdl/xn8jxvYWB3JlTR0VJLa+OltBwAAYP6EEQAAgC
          sPVYVAgIJrA/sAAAAASUVORK5CYII=)">
            <img alt="." class="hierarchy" src="data: image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAAWCAYAAAABxvaqAAAACXBIWXMAAAsTAAALEwEAmpwYAAAAB
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            <img alt="." class="hierarchy" src="data: image/png;base64,iVBORw0KGgoAAAANSUhEUgAAABAAAAAWCAYAAADJqhx8AAAACXBIWXMAAAsTAAALEwEAmpwYAAAAB
            3RJTUUH3wYeFzI3XJ6V3QAAAB1pVFh0Q29tbWVudAAAAAAAQ3JlYXRlZCB3aXRoIEdJTVBkLmUHAAAANklEQVQ4y+2RsQ0AIAzDav
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            <img alt="." class="hierarchy" src="data: image/png;base64,iVBORw0KGgoAAAANSUhEUgAAABAAAAAQCAYAAAAf8/9hAAAABmJLR0QA/wD/AP+gvaeTAAAACXBIW
            XMAAAsTAAALEwEAmpwYAAAAB3RJTUUH3gYBFzI0BrFQCwAAAERJREFUOMtj/P//PwMlgImBQjDwBrCcOnWKokBgYWBgYDCU+06W5i
            8MUggvnH/EOVJjAW4AuQHJ+O75LYqikXE0LzAAALePEntTkEoSAAAAAElFTkSuQmCC" style="background-color: white; background-color: inherit" title="Primitive Data Type"/> 
            <span title="StructureDefinition.baseDefinition : An absolute URI that is the base structure from which
             this type is derived, either by specialization or constraint.">baseDefinition</span>
            <a name="StructureDefinition.baseDefinition"> </a>
          </td>
          <td class="hierarchy" style="vertical-align: top; text-align : left; background-color: white; border: 0px #F0F0F0 solid;
           padding:0px 4px 0px 4px">
            <span style="padding: 3px" title="This element is included in summaries">Σ</span>
            <span style="padding: 3px" title="This element has or is affected by some invariants">I</span>
          </td>
          <td class="hierarchy" style="vertical-align: top; text-align : left; background-color: white; border: 0px #F0F0F0 solid;
           padding:0px 4px 0px 4px">0..1</td>
          <td class="hierarchy" style="vertical-align: top; text-align : left; background-color: white; border: 0px #F0F0F0 solid;
           padding:0px 4px 0px 4px">
            <a href="datatypes.html#uri">uri</a>
          </td>
          <td class="hierarchy" style="vertical-align: top; text-align : left; background-color: white; border: 0px #F0F0F0 solid;
           padding:0px 4px 0px 4px">Definition that this type is constrained/specialized from</td>
        </tr>

        <tr style="border: 0px #F0F0F0 solid; padding:0px; vertical-align: top; background-color: white;">
          <td class="hierarchy" style="vertical-align: top; text-align : left; background-color: white; border: 0px #F0F0F0 solid;
           padding:0px 4px 0px 4px; white-space: nowrap; background-image: url(data: image/png;base64,iVBORw0KG
          goAAAANSUhEUgAAAyAAAAACCAYAAACg/LjIAAAAL0lEQVR42u3XsQ0AQAgCQHdl/xn8jxvYWB3JlTR0VJLa+OltBwAAYP6EEQAAgC
          sPVYVAgIJrA/sAAAAASUVORK5CYII=)">
            <img alt="." class="hierarchy" src="data: image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAAWCAYAAAABxvaqAAAACXBIWXMAAAsTAAALEwEAmpwYAAAAB
            3RJTUUH3wYeFzIs1vtcMQAAAB1pVFh0Q29tbWVudAAAAAAAQ3JlYXRlZCB3aXRoIEdJTVBkLmUHAAAAE0lEQVQI12P4//8/AxMDAw
            NdCABMPwMo2ctnoQAAAABJRU5ErkJggg==" style="background-color: inherit"/>
            <img alt="." class="hierarchy" src="data: image/png;base64,iVBORw0KGgoAAAANSUhEUgAAABAAAAAWCAYAAADJqhx8AAAACXBIWXMAAAsTAAALEwEAmpwYAAAAB
            3RJTUUH3wYeFzI3XJ6V3QAAAB1pVFh0Q29tbWVudAAAAAAAQ3JlYXRlZCB3aXRoIEdJTVBkLmUHAAAANklEQVQ4y+2RsQ0AIAzDav
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            <img alt="." class="hierarchy" src="data: image/png;base64,iVBORw0KGgoAAAANSUhEUgAAABAAAAAQCAYAAAAf8/9hAAAABmJLR0QA/wD/AP+gvaeTAAAACXBIW
            XMAAAsTAAALEwEAmpwYAAAAB3RJTUUH3gYBFzI0BrFQCwAAAERJREFUOMtj/P//PwMlgImBQjDwBrCcOnWKokBgYWBgYDCU+06W5i
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            <span title="StructureDefinition.derivation : How the type relates to the baseDefinition.">derivation</span>
            <a name="StructureDefinition.derivation"> </a>
          </td>
          <td class="hierarchy" style="vertical-align: top; text-align : left; background-color: white; border: 0px #F0F0F0 solid;
           padding:0px 4px 0px 4px">
            <span style="padding: 3px" title="This element is included in summaries">Σ</span>
            <span style="padding: 3px" title="This element has or is affected by some invariants">I</span>
          </td>
          <td class="hierarchy" style="vertical-align: top; text-align : left; background-color: white; border: 0px #F0F0F0 solid;
           padding:0px 4px 0px 4px">0..1</td>
          <td class="hierarchy" style="vertical-align: top; text-align : left; background-color: white; border: 0px #F0F0F0 solid;
           padding:0px 4px 0px 4px">
            <a href="datatypes.html#code">code</a>
          </td>
          <td class="hierarchy" style="vertical-align: top; text-align : left; background-color: white; border: 0px #F0F0F0 solid;
           padding:0px 4px 0px 4px">specialization | constraint - How relates to base definition
            <br/>
            <a href="valueset-type-derivation-rule.html" title="How a type relates to it's baseDefinition.">TypeDerivationRule</a> (
            <a href="terminologies.html#required" title="To be conformant, instances of this element SHALL include a code from the specified value
             set.">Required</a>)
          </td>
        </tr>

        <tr style="border: 0px #F0F0F0 solid; padding:0px; vertical-align: top; background-color: white;">
          <td class="hierarchy" style="vertical-align: top; text-align : left; background-color: white; border: 0px #F0F0F0 solid;
           padding:0px 4px 0px 4px; white-space: nowrap; background-image: url(data: image/png;base64,iVBORw0KG
          goAAAANSUhEUgAAAyAAAAACCAYAAACg/LjIAAAAL0lEQVR42u3XsQ0AQAgCQHdl/xn8jxvYWB3JlTR0VJLa+OltBwAAYP6EEQAAgC
          sPVYVAgIJrA/sAAAAASUVORK5CYII=)">
            <img alt="." class="hierarchy" src="data: image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAAWCAYAAAABxvaqAAAACXBIWXMAAAsTAAALEwEAmpwYAAAAB
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            <img alt="." class="hierarchy" src="data: image/png;base64,iVBORw0KGgoAAAANSUhEUgAAABAAAAAWCAYAAADJqhx8AAAACXBIWXMAAAsTAAALEwEAmpwYAAAAB
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            <img alt="." class="hierarchy" src="data: image/png;base64,R0lGODlhEAAQAMQfAOvGUf7ztuvPMf/78/fkl/Pbg+u8Rvjqteu2Pf3zxPz36Pz0z+vTmPzurPvuw
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            FEhIdcAYJdYASFRUQhQkLCwkOFwcdEBAXhVabE52ecDahKy0oIQA7" style="background-color: white; background-color: inherit" title="Element"/> 
            <span title="StructureDefinition.snapshot : A snapshot view is expressed in a stand alone form that
             can be used and interpreted without considering the base StructureDefinition.">snapshot</span>
            <a name="StructureDefinition.snapshot"> </a>
          </td>
          <td class="hierarchy" style="vertical-align: top; text-align : left; background-color: white; border: 0px #F0F0F0 solid;
           padding:0px 4px 0px 4px">
            <span style="padding: 3px" title="This element has or is affected by some invariants">I</span>
          </td>
          <td class="hierarchy" style="vertical-align: top; text-align : left; background-color: white; border: 0px #F0F0F0 solid;
           padding:0px 4px 0px 4px">0..1</td>
          <td class="hierarchy" style="vertical-align: top; text-align : left; background-color: white; border: 0px #F0F0F0 solid;
           padding:0px 4px 0px 4px">
            <a href="backboneelement.html">BackboneElement</a>
          </td>
          <td class="hierarchy" style="vertical-align: top; text-align : left; background-color: white; border: 0px #F0F0F0 solid;
           padding:0px 4px 0px 4px">Snapshot view of the structure
            <br/>
            <span style="font-style: italic" title="sdf-15">The first element in a snapshot has no type</span>
            <br/>
            <span style="font-style: italic" title="sdf-8">In any snapshot, all the elements must be in the specified type</span>
            <br/>
            <span style="font-style: italic" title="sdf-3">Each element definition in a snapshot must have a formal definition and cardinalities</span>
          </td>
        </tr>

        <tr style="border: 0px #F0F0F0 solid; padding:0px; vertical-align: top; background-color: white;">
          <td class="hierarchy" style="vertical-align: top; text-align : left; background-color: white; border: 0px #F0F0F0 solid;
           padding:0px 4px 0px 4px; white-space: nowrap; background-image: url(data: image/png;base64,iVBORw0KG
          goAAAANSUhEUgAAAyAAAAACCAYAAACg/LjIAAAAL0lEQVR42u3XsQ0AQAgCQHdl/xn8jxvYWB3JlTR0VJLa+OltBwAAYP6EEQAAgC
          sPVYVAgIJrA/sAAAAASUVORK5CYII=)">
            <img alt="." class="hierarchy" src="data: image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAAWCAYAAAABxvaqAAAACXBIWXMAAAsTAAALEwEAmpwYAAAAB
            3RJTUUH3wYeFzIs1vtcMQAAAB1pVFh0Q29tbWVudAAAAAAAQ3JlYXRlZCB3aXRoIEdJTVBkLmUHAAAAE0lEQVQI12P4//8/AxMDAw
            NdCABMPwMo2ctnoQAAAABJRU5ErkJggg==" style="background-color: inherit"/>
            <img alt="." class="hierarchy" src="data: image/png;base64,iVBORw0KGgoAAAANSUhEUgAAABAAAAAWCAYAAADJqhx8AAAACXBIWXMAAAsTAAALEwEAmpwYAAAAB
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            <img alt="." class="hierarchy" src="data: image/png;base64,iVBORw0KGgoAAAANSUhEUgAAABAAAAAWCAYAAADJqhx8AAAACXBIWXMAAAsTAAALEwEAmpwYAAAAB
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            <img alt="." class="hierarchy" src="data: image/png;base64,R0lGODlhEAAQAOZ/APrkusOiYvvfqbiXWaV2G+jGhdq1b8GgYf3v1frw3vTUlsWkZNewbcSjY/DQk
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            UPvowat8Ivvgq/Pbrvzgq/PguvrgrqN0Gda2evfYm9+7d/rpw9q6e/LSku/Rl/XVl/LSlfrkt+zVqe7Wqv3x1/bNffbOf59wFdS6i
            f3u0vrqyP3owPvepfXQivDQkO/PkKh9K7STVf779P///////yH5BAEAAH8ALAAAAAAQABAAAAfNgH+Cg36FfoOIhH4JBxBghYl/hQ
            kNAV0IVT5GkJKLCwtQaSsSdx9aR26Gcwt2IkQaNRI6dBERIzCFDSgWSW8WCDkbBnoOQ3uFARc/JQJfCAZlT0x4ZFyFBxdNQT9ZCBN
            WKQoKUQ+FEDgcdTIAV14YDmg2CgSFA0hmQC5TLE4VRTdrKJAoxOeFCzZSwsw4U6BCizwUQhQyEaAPiAwCVNCY0FCNnA6GPAwYoETI
            FgY9loiRA4dToTYnsOxg8CBGHE6ICvEYQ4AKzkidfgoKBAA7" style="background-color: white; background-color: inherit" title="Data Type"/> 
            <span title="StructureDefinition.snapshot.element : Captures constraints on each element within the
             resource.">element</span>
            <a name="StructureDefinition.snapshot.element"> </a>
          </td>
          <td class="hierarchy" style="vertical-align: top; text-align : left; background-color: white; border: 0px #F0F0F0 solid;
           padding:0px 4px 0px 4px">
            <span style="padding: 3px" title="This element has or is affected by some invariants">I</span>
          </td>
          <td class="hierarchy" style="vertical-align: top; text-align : left; background-color: white; border: 0px #F0F0F0 solid;
           padding:0px 4px 0px 4px">1..*</td>
          <td class="hierarchy" style="vertical-align: top; text-align : left; background-color: white; border: 0px #F0F0F0 solid;
           padding:0px 4px 0px 4px">
            <a href="elementdefinition.html#ElementDefinition">ElementDefinition</a>
          </td>
          <td class="hierarchy" style="vertical-align: top; text-align : left; background-color: white; border: 0px #F0F0F0 solid;
           padding:0px 4px 0px 4px">Definition of elements in the resource (if no StructureDefinition)</td>
        </tr>

        <tr style="border: 0px #F0F0F0 solid; padding:0px; vertical-align: top; background-color: white;">
          <td class="hierarchy" style="vertical-align: top; text-align : left; background-color: white; border: 0px #F0F0F0 solid;
           padding:0px 4px 0px 4px; white-space: nowrap; background-image: url(data: image/png;base64,iVBORw0KG
          goAAAANSUhEUgAAAyAAAAACCAYAAACg/LjIAAAAI0lEQVR42u3QIQEAAAACIL/6/4MvTAQOkLYBAAB4kAAAANwMad9AqkRjgNAAAA
          AASUVORK5CYII=)">
            <img alt="." class="hierarchy" src="data: image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAAWCAYAAAABxvaqAAAACXBIWXMAAAsTAAALEwEAmpwYAAAAB
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            NdCABMPwMo2ctnoQAAAABJRU5ErkJggg==" style="background-color: inherit"/>
            <img alt="." class="hierarchy" src="data: image/png;base64,iVBORw0KGgoAAAANSUhEUgAAABAAAAAWCAYAAADJqhx8AAAACXBIWXMAAAsTAAALEwEAmpwYAAAAB
            3RJTUUH3wYeFzME+lXFigAAAB1pVFh0Q29tbWVudAAAAAAAQ3JlYXRlZCB3aXRoIEdJTVBkLmUHAAAANklEQVQ4y+3OsRUAIAjEUO
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            <img alt="." class="hierarchy" src="data: image/png;base64,R0lGODlhEAAQAMQfAOvGUf7ztuvPMf/78/fkl/Pbg+u8Rvjqteu2Pf3zxPz36Pz0z+vTmPzurPvuw
            /npofbjquvNefHVduuyN+uuMu3Oafbgjfnqvf/3zv/3xevPi+vRjP/20/bmsP///////yH5BAEAAB8ALAAAAAAQABAAAAV24CeOZG
            mepqeqqOgxjBZFa+19r4ftWQUAgqDgltthMshMIJAZ4jYDHsBARSAmFOJvq+g6HIdEFgcYmBWNxoNAsDjGHgBnmV5bCoUDHLBIq9s
            FEhIdcAYJdYASFRUQhQkLCwkOFwcdEBAXhVabE52ecDahKy0oIQA7" style="background-color: white; background-color: inherit" title="Element"/> 
            <span title="StructureDefinition.differential : A differential view is expressed relative to the base
             StructureDefinition - a statement of differences that it applies.">differential</span>
            <a name="StructureDefinition.differential"> </a>
          </td>
          <td class="hierarchy" style="vertical-align: top; text-align : left; background-color: white; border: 0px #F0F0F0 solid;
           padding:0px 4px 0px 4px">
            <span style="padding: 3px" title="This element has or is affected by some invariants">I</span>
          </td>
          <td class="hierarchy" style="vertical-align: top; text-align : left; background-color: white; border: 0px #F0F0F0 solid;
           padding:0px 4px 0px 4px">0..1</td>
          <td class="hierarchy" style="vertical-align: top; text-align : left; background-color: white; border: 0px #F0F0F0 solid;
           padding:0px 4px 0px 4px">
            <a href="backboneelement.html">BackboneElement</a>
          </td>
          <td class="hierarchy" style="vertical-align: top; text-align : left; background-color: white; border: 0px #F0F0F0 solid;
           padding:0px 4px 0px 4px">Differential view of the structure
            <br/>
            <span style="font-style: italic" title="sdf-15a">If the first element in a differential has no &quot;.&quot; in the path, it has no type</span>
            <br/>
            <span style="font-style: italic" title="sdf-20">No slicing on the root element</span>
            <br/>
            <span style="font-style: italic" title="sdf-8a">In any differential, all the elements must be in the specified type</span>
          </td>
        </tr>

        <tr style="border: 0px #F0F0F0 solid; padding:0px; vertical-align: top; background-color: white;">
          <td class="hierarchy" style="vertical-align: top; text-align : left; background-color: white; border: 0px #F0F0F0 solid;
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          AASUVORK5CYII=)">
            <img alt="." class="hierarchy" src="data: image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAAWCAYAAAABxvaqAAAACXBIWXMAAAsTAAALEwEAmpwYAAAAB
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            NdCABMPwMo2ctnoQAAAABJRU5ErkJggg==" style="background-color: inherit"/>
            <img alt="." class="hierarchy" src="data: image/png;base64,iVBORw0KGgoAAAANSUhEUgAAABAAAAAWCAYAAADJqhx8AAAACXBIWXMAAAsTAAALEwEAmpwYAAAAB
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            <img alt="." class="hierarchy" src="data: image/png;base64,iVBORw0KGgoAAAANSUhEUgAAABAAAAAWCAYAAADJqhx8AAAACXBIWXMAAAsTAAALEwEAmpwYAAAAB
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            L+O8cJABttJM11/x1qZAGqRBEVcNIqdWj1efDqQbb3HwwwwEfABmQUHSPM9dtDAAAAAElFTkSuQmCC" style="background-color: inherit"/>
            <img alt="." class="hierarchy" src="data: image/png;base64,R0lGODlhEAAQAOZ/APrkusOiYvvfqbiXWaV2G+jGhdq1b8GgYf3v1frw3vTUlsWkZNewbcSjY/DQk
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            szv3rye3LiPvnv+3MjPDasKiIS/789/3x2f747eXDg+7Mifvu0tu7f+/QkfDTnPXWmPrjsvrjtPbPgrqZW+/QlPz48K2EMv36866O
            UPvowat8Ivvgq/Pbrvzgq/PguvrgrqN0Gda2evfYm9+7d/rpw9q6e/LSku/Rl/XVl/LSlfrkt+zVqe7Wqv3x1/bNffbOf59wFdS6i
            f3u0vrqyP3owPvepfXQivDQkO/PkKh9K7STVf779P///////yH5BAEAAH8ALAAAAAAQABAAAAfNgH+Cg36FfoOIhH4JBxBghYl/hQ
            kNAV0IVT5GkJKLCwtQaSsSdx9aR26Gcwt2IkQaNRI6dBERIzCFDSgWSW8WCDkbBnoOQ3uFARc/JQJfCAZlT0x4ZFyFBxdNQT9ZCBN
            WKQoKUQ+FEDgcdTIAV14YDmg2CgSFA0hmQC5TLE4VRTdrKJAoxOeFCzZSwsw4U6BCizwUQhQyEaAPiAwCVNCY0FCNnA6GPAwYoETI
            FgY9loiRA4dToTYnsOxg8CBGHE6ICvEYQ4AKzkidfgoKBAA7" style="background-color: white; background-color: inherit" title="Data Type"/> 
            <span title="StructureDefinition.differential.element : Captures constraints on each element within
             the resource.">element</span>
            <a name="StructureDefinition.differential.element"> </a>
          </td>
          <td class="hierarchy" style="vertical-align: top; text-align : left; background-color: white; border: 0px #F0F0F0 solid;
           padding:0px 4px 0px 4px"/>
          <td class="hierarchy" style="vertical-align: top; text-align : left; background-color: white; border: 0px #F0F0F0 solid;
           padding:0px 4px 0px 4px">1..*</td>
          <td class="hierarchy" style="vertical-align: top; text-align : left; background-color: white; border: 0px #F0F0F0 solid;
           padding:0px 4px 0px 4px">
            <a href="elementdefinition.html#ElementDefinition">ElementDefinition</a>
          </td>
          <td class="hierarchy" style="vertical-align: top; text-align : left; background-color: white; border: 0px #F0F0F0 solid;
           padding:0px 4px 0px 4px">Definition of elements in the resource (if no StructureDefinition)</td>
        </tr>

        <tr>
          <td class="hierarchy" colspan="5">
            <br/>
            <a href="formats.html#table" title="Legend for this format">
              <img alt="doco" src="help16.png" style="background-color: inherit"/> Documentation for this format
            </a>
          </td>
        </tr>
      </table>
    </div>
  </text>
  <extension url="http://hl7.org/fhir/StructureDefinition/structuredefinition-fmm">
    <valueInteger value="2"/>
  </extension>
  <extension url="http://hl7.org/fhir/StructureDefinition/structuredefinition-wg">
    <valueCode value="fhir"/>
  </extension>
  <url value="http://hl7.org/fhir/StructureDefinition/StructureDefinition"/>
  <name value="StructureDefinition"/>
  <status value="draft"/>
  <publisher value="Health Level Seven International (FHIR Infrastructure)"/>
  <contact>
    <telecom>
      <system value="url"/>
      <value value="http://hl7.org/fhir"/>
    </telecom>
  </contact>
  <contact>
    <telecom>
      <system value="url"/>
      <value value="http://www.hl7.org/Special/committees/fiwg/index.cfm"/>
    </telecom>
  </contact>
  <date value="2016-12-06T12:22:34+11:00"/>
  <description value="Base StructureDefinition for StructureDefinition Resource"/>
  <fhirVersion value="1.8.0"/>
  <mapping>
    <identity value="rim"/>
    <uri value="http://hl7.org/v3"/>
    <name value="RIM Mapping"/>
  </mapping>
  <mapping>
    <identity value="w5"/>
    <uri value="http://hl7.org/fhir/w5"/>
    <name value="W5 Mapping"/>
  </mapping>
  <mapping>
    <identity value="iso11179"/>
    <uri value="http://metadata-standards.org/11179/"/>
    <name value="ISO 11179"/>
  </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="StructureDefinition"/>
  <baseDefinition value="http://hl7.org/fhir/StructureDefinition/DomainResource">
    <extension url="http://hl7.org/fhir/StructureDefinition/structuredefinition-codegen-super">
      <valueString value="MetadataResource"/>
    </extension>
  </baseDefinition>
  <derivation value="specialization"/>
  <snapshot>
    <element id="StructureDefinition">
      <path value="StructureDefinition"/>
      <short value="Structural Definition"/>
      <definition value="A definition of a FHIR structure. This resource is used to describe the underlying resources,
       data types defined in FHIR, and also for describing extensions, and constraints on resources
       and data types."/>
      <alias value="Template"/>
      <alias value="Profile"/>
      <min value="0"/>
      <max value="*"/>
      <constraint>
        <key value="dom-2"/>
        <severity value="error"/>
        <human value="If the resource is contained in another resource, it SHALL NOT contain nested Resources"/>
        <expression value="contained.contained.empty()"/>
        <xpath value="not(parent::f:contained and f:contained)"/>
        <source value="DomainResource"/>
      </constraint>
      <constraint>
        <key value="dom-1"/>
        <severity value="error"/>
        <human value="If the resource is contained in another resource, it SHALL NOT contain any narrative"/>
        <expression value="contained.text.empty()"/>
        <xpath value="not(parent::f:contained and f:text)"/>
        <source value="DomainResource"/>
      </constraint>
      <constraint>
        <key value="dom-4"/>
        <severity value="error"/>
        <human value="If a resource is contained in another resource, it SHALL NOT have a meta.versionId or
         a meta.lastUpdated"/>
        <expression value="contained.meta.versionId.empty() and contained.meta.lastUpdated.empty()"/>
        <xpath value="not(exists(f:contained/*/f:meta/f:versionId)) and not(exists(f:contained/*/f:meta/f:lastUpdated))"/>
        <source value="DomainResource"/>
      </constraint>
      <constraint>
        <key value="dom-3"/>
        <severity value="error"/>
        <human value="If the resource is contained in another resource, it SHALL be referred to from elsewhere
         in the resource"/>
        <expression value="contained.where(('#'+id in %resource.descendants().reference).not()).empty()"/>
        <xpath value="not(exists(for $id in f:contained/*/@id return $id[not(ancestor::f:contained/parent::*/descendant::f
        :reference/@value=concat('#', $id))]))"/>
        <source value="DomainResource"/>
      </constraint>
      <constraint>
        <key value="sdf-9"/>
        <requirements value="Because these 3 fields seem to be have overlapping meaning with the ones in the root of
         StructureDefinition"/>
        <severity value="error"/>
        <human value="In any snapshot or differential, no label, code or requirements on the an element without
         a &quot;.&quot; in the path (e.g. the first element)"/>
        <expression value="children().element.first().label.empty() and children().element.first().code.empty() and
         children().element.first().requirements.empty()"/>
        <xpath value="not(exists(f:snapshot/f:element[not(contains(f:path/@value, '.')) and (f:label or f:code
         or f:requirements)])) and not(exists(f:differential/f:element[not(contains(f:path/@value,
         '.')) and (f:label or f:code or f:requirements)]))"/>
      </constraint>
      <constraint>
        <key value="sdf-19"/>
        <requirements value="custom types only in logical models"/>
        <severity value="error"/>
        <human value="Custom types can only be used in logical models"/>
        <expression value="kind = 'logical' or (differential.element.type.code.all(hasValue() implies matches('^[a-zA-Z0-9]+$')
        ) and snapshot.element.type.code.all(hasValue() implies matches('^[a-zA-Z0-9]+$')))"/>
        <xpath value="(f:kind/@value = 'logical') or (true)"/>
      </constraint>
      <constraint>
        <key value="sdf-16"/>
        <requirements value="element ids need to be unique"/>
        <severity value="error"/>
        <human value="All element definitions must have unique ids (snapshot)"/>
        <expression value="snapshot.element.id.trace('ids').isDistinct()"/>
        <xpath value="count(*/f:element)=count(*/f:element/@id)"/>
      </constraint>
      <constraint>
        <key value="sdf-18"/>
        <requirements value="contextInvariant"/>
        <severity value="error"/>
        <human value="Context Invariants can only be used for extensions"/>
        <expression value="contextInvariant.exists() implies type = 'Extension'"/>
        <xpath value="not(exists(f:contextInvariant)) or (f:type/@value = 'Extension')"/>
      </constraint>
      <constraint>
        <key value="sdf-17"/>
        <requirements value="element ids need to be unique"/>
        <severity value="error"/>
        <human value="All element definitions must have unique ids (diff)"/>
        <expression value="differential.element.id.trace('ids').isDistinct()"/>
        <xpath value="count(*/f:element)=count(*/f:element/@id)"/>
      </constraint>
      <constraint>
        <key value="sdf-12"/>
        <requirements value="Ensure that element.base appears with base or not"/>
        <severity value="error"/>
        <human value="element.base cannot appear if there is no base on the structure definition"/>
        <expression value="snapshot.exists() implies (snapshot.element.base.exists() = baseDefinition.exists())"/>
        <xpath value="f:baseDefinition or not(exists(f:snapshot/f:element/f:base) or exists(f:differential/f:element/f:bas
        e))"/>
      </constraint>
      <constraint>
        <key value="sdf-11"/>
        <requirements value="Ensure that the type is not inconsistent with the other information in the structure"/>
        <severity value="error"/>
        <human value="If there's a type, its content must match the path name in the first element of a snapshot"/>
        <expression value="snapshot.empty() or snapshot.element.first().path = type"/>
        <xpath value="not(exists(f:snapshot)) or (f:type/@value = f:snapshot/f:element[1]/f:path/@value)"/>
      </constraint>
      <constraint>
        <key value="sdf-14"/>
        <requirements value="elements have id"/>
        <severity value="error"/>
        <human value="All element definitions must have an id"/>
        <expression value="snapshot.element.all(id.exists()) and differential.element.all(id.exists())"/>
        <xpath value="count(*/f:element)=count(*/f:element/@id)"/>
      </constraint>
      <constraint>
        <key value="sdf-1"/>
        <severity value="error"/>
        <human value="Element paths must be unique unless the structure is a constraint"/>
        <expression value="derivation = 'constraint' or snapshot.element.select(path).isDistinct()"/>
        <xpath value="(f:derivation/@value = 'constraint') or (count(f:snapshot/f:element) = count(distinct-values(f:snaps
        hot/f:element/f:path/@value)))"/>
      </constraint>
      <constraint>
        <key value="sdf-7"/>
        <severity value="error"/>
        <human value="If the structure describes a base Resource or Type, the URL has to start with &quot;http://hl7.org/f
        hir/StructureDefinition/&quot; and the tail must match the id"/>
        <expression value="(derivation = 'constraint') or (kind = 'logical') or (url = 'http://hl7.org/fhir/StructureDefinition
        /'+id)"/>
        <xpath value="(f:derivation/@value = 'constraint') or (f:derivation/@value = 'logical') or (f:url/@value=concat('h
        ttp://hl7.org/fhir/StructureDefinition/', f:id/@value))"/>
      </constraint>
      <constraint>
        <key value="sdf-6"/>
        <severity value="error"/>
        <human value="A structure must have either a differential, or a snapshot (or both)"/>
        <expression value="snapshot.exists() or differential.exists()"/>
        <xpath value="exists(f:snapshot) or exists(f:differential)"/>
      </constraint>
      <constraint>
        <key value="sdf-5"/>
        <severity value="error"/>
        <human value="If the structure defines an extension then the structure must have context information"/>
        <expression value="type != 'Extension' or derivation = 'specialization' or (context.exists() and contextType.exists())"/>
        <xpath value="not(f:type/@value = 'extension') or (f:derivation/@value = 'specialization') or (exists(f:context)
         and exists(f:contextType))"/>
      </constraint>
      <constraint>
        <key value="sdf-4"/>
        <requirements value="Ensure that the base types are abstract"/>
        <severity value="error"/>
        <human value="If the structure is not abstract, then there SHALL be a baseDefinition"/>
        <expression value="abstract = true or baseDefinition.exists()"/>
        <xpath value="(f:abstract/@value=true()) or exists(f:baseDefinition)"/>
      </constraint>
      <mapping>
        <identity value="rim"/>
        <map value="Entity. Role, or Act"/>
      </mapping>
      <mapping>
        <identity value="rim"/>
        <map value="n/a"/>
      </mapping>
      <mapping>
        <identity value="w5"/>
        <map value="conformance.content"/>
      </mapping>
    </element>
    <element id="StructureDefinition.id">
      <path value="StructureDefinition.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."/>
      <comments value="The only time that a resource does not have an id is when it is being submitted to the
       server using a create operation."/>
      <min value="0"/>
      <max value="1"/>
      <base>
        <path value="Resource.id"/>
        <min value="0"/>
        <max value="1"/>
      </base>
      <type>
        <code value="id"/>
      </type>
      <isSummary value="true"/>
    </element>
    <element id="StructureDefinition.meta">
      <path value="StructureDefinition.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 may 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>
      <isSummary value="true"/>
    </element>
    <element id="StructureDefinition.implicitRules">
      <path value="StructureDefinition.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."/>
      <comments 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 as much as possible."/>
      <min value="0"/>
      <max value="1"/>
      <base>
        <path value="Resource.implicitRules"/>
        <min value="0"/>
        <max value="1"/>
      </base>
      <type>
        <code value="uri"/>
      </type>
      <isModifier value="true"/>
      <isSummary value="true"/>
    </element>
    <element id="StructureDefinition.language">
      <path value="StructureDefinition.language"/>
      <short value="Language of the resource content"/>
      <definition value="The base language in which the resource is written."/>
      <comments 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>
      <binding>
        <extension url="http://hl7.org/fhir/StructureDefinition/elementdefinition-maxValueSet">
          <valueReference>
            <reference value="http://hl7.org/fhir/ValueSet/all-languages"/>
          </valueReference>
        </extension>
        <strength value="extensible"/>
        <description value="A human language."/>
        <valueSetReference>
          <reference value="http://hl7.org/fhir/ValueSet/languages"/>
        </valueSetReference>
      </binding>
    </element>
    <element id="StructureDefinition.text">
      <path value="StructureDefinition.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 may 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."/>
      <comments value="Contained resources do not have 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 in formation 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-1"/>
      <mapping>
        <identity value="rim"/>
        <map value="Act.text?"/>
      </mapping>
    </element>
    <element id="StructureDefinition.contained">
      <path value="StructureDefinition.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, and nor can they have their own independent
       transaction scope."/>
      <comments 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."/>
      <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>
      <mapping>
        <identity value="rim"/>
        <map value="N/A"/>
      </mapping>
    </element>
    <element id="StructureDefinition.extension">
      <path value="StructureDefinition.extension"/>
      <short value="Additional Content defined by implementations"/>
      <definition value="May be used to represent additional information that is not part of the basic definition
       of the resource. In order to make the use of extensions safe and manageable, there is
       a strict set of governance  applied to the definition and use of extensions. Though any
       implementer is allowed to define an extension, there is a set of requirements that SHALL
       be met as part of the definition of the extension."/>
      <comments 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="DomainResource.extension"/>
        <min value="0"/>
        <max value="*"/>
      </base>
      <type>
        <code value="Extension"/>
      </type>
      <mapping>
        <identity value="rim"/>
        <map value="N/A"/>
      </mapping>
    </element>
    <element id="StructureDefinition.modifierExtension">
      <path value="StructureDefinition.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.
       Usually modifier elements provide negation or qualification. In order to make the use
       of extensions safe and manageable, there is a strict set of governance applied to the
       definition and use of extensions. Though any implementer 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."/>
      <comments 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="DomainResource.modifierExtension"/>
        <min value="0"/>
        <max value="*"/>
      </base>
      <type>
        <code value="Extension"/>
      </type>
      <isModifier value="true"/>
      <mapping>
        <identity value="rim"/>
        <map value="N/A"/>
      </mapping>
    </element>
    <element id="StructureDefinition.url">
      <path value="StructureDefinition.url"/>
      <short value="Logical uri to reference this structure definition (globally unique)"/>
      <definition value="An absolute URL that is used to identify this structure definition when it is referenced
       in a specification, model, design or an instance. This SHALL be a URL, SHOULD be globally
       unique, and SHOULD be an address at which this structure definition is (or will be) published.
       The URL SHOULD include the major version of the structure definition. For more information
       see [Technical and Business Versions](resource.html#versions)."/>
      <comments value="Can be a urn:uuid: or a urn:oid:, but real http: addresses are preferred."/>
      <requirements value="Allows the structure definition to be referenced by a single globally unique identifier."/>
      <alias value="url"/>
      <alias value="authoritative-url"/>
      <alias value="destination"/>
      <alias value="identity"/>
      <min value="1"/>
      <max value="1"/>
      <type>
        <code value="uri"/>
      </type>
      <isSummary value="true"/>
      <mapping>
        <identity value="w5"/>
        <map value="id"/>
      </mapping>
    </element>
    <element id="StructureDefinition.identifier">
      <path value="StructureDefinition.identifier"/>
      <short value="Additional identifier for the structure definition"/>
      <definition value="A formal identifier that is used to identify this structure definition when it is represented
       in other formats, or referenced in a specification, model, design or an instance."/>
      <comments value="Typically, this is used for identifiers that can go in an HL7 v3 II data type - e.g. to
       identify this structure definition outside of FHIR, where the logical URL is not possible
       to use."/>
      <requirements value="Allows externally provided and/or useable business identifiers to be easily associated
       with the module."/>
      <min value="0"/>
      <max value="*"/>
      <type>
        <code value="Identifier"/>
      </type>
      <isSummary value="true"/>
      <mapping>
        <identity value="iso11179"/>
        <map value="Identifier part"/>
      </mapping>
      <mapping>
        <identity value="objimpl"/>
        <map value="no-gen-base"/>
      </mapping>
      <mapping>
        <identity value="w5"/>
        <map value="id"/>
      </mapping>
    </element>
    <element id="StructureDefinition.version">
      <path value="StructureDefinition.version"/>
      <short value="Business version of the structure definition"/>
      <definition value="The identifier that is used to identify this version of the structure definition when
       it is referenced in a specification, model, design or instance. This is an arbitrary value
       managed by the structure definition 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 are orderable."/>
      <comments value="There may be multiple different instances of a structure definition that have the same
       identifier but different versions."/>
      <min value="0"/>
      <max value="1"/>
      <type>
        <code value="string"/>
      </type>
      <isSummary value="true"/>
      <mapping>
        <identity value="iso11179"/>
        <map value="Version"/>
      </mapping>
      <mapping>
        <identity value="w5"/>
        <map value="id.version"/>
      </mapping>
    </element>
    <element id="StructureDefinition.name">
      <path value="StructureDefinition.name"/>
      <short value="Name for this structure definition (Computer friendly)"/>
      <definition value="A natural language name identifying the structure definition. This name should be usable
       as an identifier for the module by machine processing applications such as code generation."/>
      <comments value="The name is not expected to be globally unique. The name should be a simple alpha-numeric
       type name to ensure it is computable friendly."/>
      <requirements value="Support human navigation &amp; code generation."/>
      <min value="1"/>
      <max value="1"/>
      <type>
        <code value="string"/>
      </type>
      <isSummary value="true"/>
    </element>
    <element id="StructureDefinition.title">
      <path value="StructureDefinition.title"/>
      <short value="Name for this structure definition (Human friendly)"/>
      <definition value="A short, descriptive, user-friendly title for the structure definition."/>
      <comments value="null Applications don't have to use this name, but can always fall back to it. The title
       also corresponds to the label for the root element."/>
      <min value="0"/>
      <max value="1"/>
      <type>
        <code value="string"/>
      </type>
      <isSummary value="true"/>
    </element>
    <element id="StructureDefinition.status">
      <path value="StructureDefinition.status"/>
      <short value="draft | active | retired"/>
      <definition value="The status of this structure definition. Enables tracking the life-cycle of the content."/>
      <comments value="Allows filtering of structure definition that are appropriate for use vs. not."/>
      <min value="1"/>
      <max value="1"/>
      <type>
        <code value="code"/>
      </type>
      <isModifier value="true"/>
      <isSummary value="true"/>
      <binding>
        <strength value="required"/>
        <description value="The lifecycle status of a Value Set or Concept Map."/>
        <valueSetReference>
          <reference value="http://hl7.org/fhir/ValueSet/publication-status"/>
        </valueSetReference>
      </binding>
      <mapping>
        <identity value="iso11179"/>
        <map value="Registration status"/>
      </mapping>
      <mapping>
        <identity value="w5"/>
        <map value="status"/>
      </mapping>
    </element>
    <element id="StructureDefinition.experimental">
      <path value="StructureDefinition.experimental"/>
      <short value="If for testing purposes, not real usage"/>
      <definition value="A flag to indicate that this structure definition is authored for testing purposes (or
       education/evaluation/marketing), and is not intended to be used for genuine usage."/>
      <comments value="Allows filtering of structure definition that are appropriate for use vs. not."/>
      <requirements value="Enables experimental content to be developed following the same life-cycle as a production-level
       structure definition would."/>
      <min value="0"/>
      <max value="1"/>
      <type>
        <code value="boolean"/>
      </type>
      <isModifier value="true"/>
      <isSummary value="true"/>
      <mapping>
        <identity value="iso11179"/>
        <map value="Registration status"/>
      </mapping>
      <mapping>
        <identity value="w5"/>
        <map value="class"/>
      </mapping>
    </element>
    <element id="StructureDefinition.publisher">
      <path value="StructureDefinition.publisher"/>
      <short value="Name of the publisher (Organization or individual)"/>
      <definition value="The name of the individual or organization that published the structure definition."/>
      <comments value="Usually an organization, but may be an individual. The publisher (or steward) of the structure
       definition is the organization or individual primarily responsible for the maintenance
       and upkeep of the structure definition. 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 structure definition. This item SHOULD
       be populated unless the information is available from context."/>
      <requirements value="Helps establish the &quot;authority/credibility&quot; of the structure definition.  May
       also allow for contact."/>
      <min value="0"/>
      <max value="1"/>
      <type>
        <code value="string"/>
      </type>
      <isSummary value="true"/>
      <mapping>
        <identity value="iso11179"/>
        <map value="Registration Authority"/>
      </mapping>
      <mapping>
        <identity value="w5"/>
        <map value="who.witness"/>
      </mapping>
    </element>
    <element id="StructureDefinition.contact">
      <path value="StructureDefinition.contact"/>
      <short value="Contact details for the publisher"/>
      <definition value="Contact details to assist a user in finding and communicating with the publisher."/>
      <comments value="May be a web site, an email address, a telephone number, etc."/>
      <min value="0"/>
      <max value="*"/>
      <type>
        <code value="ContactDetail"/>
      </type>
      <isSummary value="true"/>
    </element>
    <element id="StructureDefinition.date">
      <path value="StructureDefinition.date"/>
      <short value="Date this was last changed"/>
      <definition value="The date  (and optionally time) when the structure definition was published. The date
       must change when the business version changes, if it does, and it must change if the status
       code changes. In addition, it should change when the substantive content of the structure
       definition changes."/>
      <comments value="Note that this is not the same as the resource last-modified-date, since the resource
       may be a secondary representation of the structure definition. Additional specific dates
       may be added as extensions."/>
      <min value="0"/>
      <max value="1"/>
      <type>
        <code value="dateTime"/>
      </type>
      <isSummary value="true"/>
      <mapping>
        <identity value="w5"/>
        <map value="when.recorded"/>
      </mapping>
    </element>
    <element id="StructureDefinition.description">
      <path value="StructureDefinition.description"/>
      <short value="Natural language description of the structure definition"/>
      <definition value="A free text natural language description of the structure definition from the consumer's
       perspective."/>
      <comments value="This description can be used to capture details such as why the structure definition was
       built, comments about misuse, instructions for clinical use and interpretation, literature
       references, examples from the paper world, etc. It is not a rendering of the module as
       conveyed in the text field of the resource itself. This item SHOULD be populated unless
       the information is available from context."/>
      <min value="0"/>
      <max value="1"/>
      <type>
        <code value="markdown"/>
      </type>
    </element>
    <element id="StructureDefinition.useContext">
      <path value="StructureDefinition.useContext"/>
      <short value="Content intends to support these contexts"/>
      <definition value="The content was developed with a focus and intent of supporting the contexts that are
       listed. These terms may be used to assist with indexing and searching of code system definitions."/>
      <comments value="When multiple usageContexts are specified, there is no expectation for whether all or
       any of the contexts apply."/>
      <requirements value="Assist in searching for appropriate content."/>
      <min value="0"/>
      <max value="*"/>
      <type>
        <code value="UsageContext"/>
      </type>
      <isSummary value="true"/>
    </element>
    <element id="StructureDefinition.jurisdiction">
      <path value="StructureDefinition.jurisdiction"/>
      <short value="Intended jurisdiction for structure definition (if applicable)"/>
      <definition value="A jurisdiction in which the structure definition is intended to be used."/>
      <min value="0"/>
      <max value="*"/>
      <type>
        <code value="CodeableConcept"/>
      </type>
      <isSummary value="true"/>
      <binding>
        <strength value="extensible"/>
        <description value="Countries and regions within which this artifact is targeted for use"/>
        <valueSetReference>
          <reference value="http://hl7.org/fhir/ValueSet/jurisdiction"/>
        </valueSetReference>
      </binding>
    </element>
    <element id="StructureDefinition.purpose">
      <path value="StructureDefinition.purpose"/>
      <short value="Why this structure definition is defined"/>
      <definition value="Explains why this structure definition is needed and why it has been designed as it has."/>
      <comments value="This element does not describe the usage of the structure definition (See, e.g, the comments
       element, or relatedArtifacts), rather it's for 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 structure definition."/>
      <min value="0"/>
      <max value="1"/>
      <type>
        <code value="markdown"/>
      </type>
      <mapping>
        <identity value="objimpl"/>
        <map value="no-gen-base"/>
      </mapping>
      <mapping>
        <identity value="w5"/>
        <map value="why"/>
      </mapping>
    </element>
    <element id="StructureDefinition.copyright">
      <path value="StructureDefinition.copyright"/>
      <short value="Use and/or publishing restrictions"/>
      <definition value="A copyright statement relating to the structure definition and/or its contents. Copyright
       statements are generally legal restrictions on the use and publishing of the structure
       definition."/>
      <requirements value="Consumers of the library must be able to determine any legal restrictions on the use of
       the structure definition and/or its content."/>
      <alias value="License"/>
      <alias value="Restrictions"/>
      <min value="0"/>
      <max value="1"/>
      <type>
        <code value="markdown"/>
      </type>
      <mapping>
        <identity value="objimpl"/>
        <map value="no-gen-base"/>
      </mapping>
    </element>
    <element id="StructureDefinition.keyword">
      <path value="StructureDefinition.keyword"/>
      <short value="Assist with indexing and finding"/>
      <definition value="A set of key words or terms from external terminologies that may be used to assist with
       indexing and searching of templates."/>
      <requirements value="Assist in searching for appropriate StructureDefinitions."/>
      <min value="0"/>
      <max value="*"/>
      <type>
        <code value="Coding"/>
      </type>
      <isSummary value="true"/>
      <binding>
        <strength value="example"/>
        <description value="Codes for the meaning of the defined structure (SNOMED CT and LOINC codes, as an example)."/>
        <valueSetReference>
          <reference value="http://hl7.org/fhir/ValueSet/profile-code"/>
        </valueSetReference>
      </binding>
      <mapping>
        <identity value="iso11179"/>
        <map value="keywords"/>
      </mapping>
    </element>
    <element id="StructureDefinition.fhirVersion">
      <path value="StructureDefinition.fhirVersion"/>
      <short value="FHIR Version this StructureDefinition targets"/>
      <definition value="The version of the FHIR specification on which this StructureDefinition is based - this
       is the formal version of the specification, without the revision number, e.g. [publication].[major].
      [minor], which is 1.8.0 for this version."/>
      <comments value="A StructureDefinition does not need to specify the target it applies to,as StructureDefinitions
       will often be valid across multiple versions of FHIR. FHIR tooling can determine whether
       a StructureDefinition is consistent with a particular StructureDefinition if desired."/>
      <min value="0"/>
      <max value="1"/>
      <type>
        <code value="id"/>
      </type>
      <isSummary value="true"/>
    </element>
    <element id="StructureDefinition.mapping">
      <path value="StructureDefinition.mapping"/>
      <short value="External specification that the content is mapped to"/>
      <definition value="An external specification that the content is mapped to."/>
      <min value="0"/>
      <max value="*"/>
      <type>
        <code value="BackboneElement"/>
      </type>
      <constraint>
        <key value="ele-1"/>
        <severity value="error"/>
        <human value="All FHIR elements must have a @value or children"/>
        <expression value="children().count() &gt; id.count()"/>
        <xpath value="@value|f:*|h:div"/>
        <source value="Element"/>
      </constraint>
      <constraint>
        <key value="sdf-2"/>
        <severity value="error"/>
        <human value="Must have at least a name or a uri (or both)"/>
        <expression value="name.exists() or uri.exists()"/>
        <xpath value="exists(f:uri) or exists(f:name)"/>
      </constraint>
    </element>
    <element id="StructureDefinition.mapping.id">
      <path value="StructureDefinition.mapping.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). This may be any
       string value that does not contain spaces."/>
      <min value="0"/>
      <max value="1"/>
      <base>
        <path value="Element.id"/>
        <min value="0"/>
        <max value="1"/>
      </base>
      <type>
        <code value="string"/>
      </type>
      <mapping>
        <identity value="rim"/>
        <map value="n/a"/>
      </mapping>
    </element>
    <element id="StructureDefinition.mapping.extension">
      <path value="StructureDefinition.mapping.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. In order to make the use of extensions safe and manageable, there is a
       strict set of governance  applied to the definition and use of extensions. Though any
       implementer is allowed to define an extension, there is a set of requirements that SHALL
       be met as part of the definition of the extension."/>
      <comments 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>
      <mapping>
        <identity value="rim"/>
        <map value="n/a"/>
      </mapping>
    </element>
    <element id="StructureDefinition.mapping.modifierExtension">
      <path value="StructureDefinition.mapping.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 element, and that modifies the understanding of the element that contains it. Usually
       modifier elements provide negation or qualification. In order to make the use of extensions
       safe and manageable, there is a strict set of governance applied to the definition and
       use of extensions. Though any implementer 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."/>
      <comments 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"/>
      <alias value="modifiers"/>
      <min value="0"/>
      <max value="*"/>
      <base>
        <path value="BackboneElement.modifierExtension"/>
        <min value="0"/>
        <max value="*"/>
      </base>
      <type>
        <code value="Extension"/>
      </type>
      <isModifier value="true"/>
      <isSummary value="true"/>
      <mapping>
        <identity value="rim"/>
        <map value="N/A"/>
      </mapping>
    </element>
    <element id="StructureDefinition.mapping.identity">
      <path value="StructureDefinition.mapping.identity"/>
      <short value="Internal id when this mapping is used"/>
      <definition value="An Internal id that is used to identify this mapping set when specific mappings are made."/>
      <comments value="The specification is described once, with general comments, and then specific mappings
       are made that reference this declaration."/>
      <min value="1"/>
      <max value="1"/>
      <type>
        <code value="id"/>
      </type>
    </element>
    <element id="StructureDefinition.mapping.uri">
      <path value="StructureDefinition.mapping.uri"/>
      <short value="Identifies what this mapping refers to"/>
      <definition value="An absolute URI that identifies the specification that this mapping is expressed to."/>
      <comments value="A formal identity for the specification being mapped to helps with identifying maps consistently."/>
      <min value="0"/>
      <max value="1"/>
      <type>
        <code value="uri"/>
      </type>
      <condition value="sdf-2"/>
    </element>
    <element id="StructureDefinition.mapping.name">
      <path value="StructureDefinition.mapping.name"/>
      <short value="Names what this mapping refers to"/>
      <definition value="A name for the specification that is being mapped to."/>
      <min value="0"/>
      <max value="1"/>
      <type>
        <code value="string"/>
      </type>
      <condition value="sdf-2"/>
    </element>
    <element id="StructureDefinition.mapping.comments">
      <path value="StructureDefinition.mapping.comments"/>
      <short value="Versions, Issues, Scope limitations etc."/>
      <definition value="Comments about this mapping, including version notes, issues, scope limitations, and other
       important notes for usage."/>
      <min value="0"/>
      <max value="1"/>
      <type>
        <code value="string"/>
      </type>
    </element>
    <element id="StructureDefinition.kind">
      <path value="StructureDefinition.kind"/>
      <short value="primitive-type | complex-type | resource | logical"/>
      <definition value="Defines the kind of structure that this definition is describing."/>
      <min value="1"/>
      <max value="1"/>
      <type>
        <code value="code"/>
      </type>
      <isSummary value="true"/>
      <binding>
        <strength value="required"/>
        <description value="Defines the type of structure that a definition is describing."/>
        <valueSetReference>
          <reference value="http://hl7.org/fhir/ValueSet/structure-definition-kind"/>
        </valueSetReference>
      </binding>
    </element>
    <element id="StructureDefinition.abstract">
      <path value="StructureDefinition.abstract"/>
      <short value="Whether the structure is abstract"/>
      <definition value="Whether structure this definition describes is abstract or not  - that is, whether the
       structure is not intended to be instantiated. For Resources and Data types, abstract types
       will never be exchanged  between systems."/>
      <comments value="Abstract Resources cannot be instantiated - a concrete sub-type must be used. Abstract
       datatypes and extensions cannot be used in an instance. For logical models, the exact
       implication of &quot;abstract&quot; will rest with the author, depending how the logical
       model is used. Flagging a constraint structure as abstract conveys design intent but makes
       no difference to how the structure definition is handled. Note that inline declared elements
       that are given the type &quot;Element&quot; in the profile, but have children described,
       are anonymous concrete types that specialise Element."/>
      <min value="1"/>
      <max value="1"/>
      <type>
        <code value="boolean"/>
      </type>
      <isSummary value="true"/>
    </element>
    <element id="StructureDefinition.contextType">
      <path value="StructureDefinition.contextType"/>
      <short value="resource | datatype | extension"/>
      <definition value="If this is an extension, Identifies the context within FHIR resources where the extension
       can be used."/>
      <min value="0"/>
      <max value="1"/>
      <type>
        <code value="code"/>
      </type>
      <condition value="sdf-5"/>
      <isSummary value="true"/>
      <binding>
        <strength value="required"/>
        <description value="How an extension context is interpreted."/>
        <valueSetReference>
          <reference value="http://hl7.org/fhir/ValueSet/extension-context"/>
        </valueSetReference>
      </binding>
    </element>
    <element id="StructureDefinition.context">
      <path value="StructureDefinition.context"/>
      <short value="Where the extension can be used in instances"/>
      <definition value="Identifies the types of resource or data type elements to which the extension can be applied."/>
      <comments value="If the context is an element that can have multiple types, then use (e.g.) value[x] if
       the extension works on all choice types, or otherwise an enumeration of explicitly named
       elements if not. Note that a context of &quot;string&quot; doesn't mean that the extension
       can be used with one of the string patterns such as &quot;id&quot; etc."/>
      <min value="0"/>
      <max value="*"/>
      <type>
        <code value="string"/>
      </type>
      <condition value="sdf-5"/>
      <isSummary value="true"/>
    </element>
    <element id="StructureDefinition.contextInvariant">
      <path value="StructureDefinition.contextInvariant"/>
      <short value="FluentPath invariants - when the extension can be used"/>
      <definition value="A set of rules as Fluent Invariants about when the extension can be used (e.g. co-occurance
       variants for the extension)."/>
      <comments value="All the rules must be true. When evaluating the invariant, the fluentpath focus is the
       element that holds the extension, and %extension refers to the extension itself."/>
      <min value="0"/>
      <max value="*"/>
      <type>
        <code value="string"/>
      </type>
      <condition value="sdf-18"/>
      <isSummary value="true"/>
    </element>
    <element id="StructureDefinition.type">
      <path value="StructureDefinition.type"/>
      <short value="Type defined or constrained by this structure"/>
      <definition value="The type this structure is describes. If the derivation kind is 'specialization' then
       this is the master definition for a type, and there is always one of these (a data type,
       an extension, a resource, including abstract ones). Otherwise the structure definition
       is a constraint on the stated type (and in this case, the type cannot be an abstract type)."/>
      <comments value="Note that in the case of constraints, the type could be determined by chasing through
       the baseDefinition references until a concrete structure (derivation = specialization)
       is reached, or by looking at the path of the first element in the snapshot - if present
       - but providing the type directly makes for simpler tooling and indexing."/>
      <min value="1"/>
      <max value="1"/>
      <type>
        <code value="code"/>
      </type>
      <condition value="sdf-4"/>
      <condition value="sdf-11"/>
      <isSummary value="true"/>
      <binding>
        <strength value="extensible"/>
        <description value="Either a resource or a data type, including logical model types"/>
        <valueSetReference>
          <reference value="http://hl7.org/fhir/ValueSet/defined-types"/>
        </valueSetReference>
      </binding>
    </element>
    <element id="StructureDefinition.baseDefinition">
      <path value="StructureDefinition.baseDefinition"/>
      <short value="Definition that this type is constrained/specialized from"/>
      <definition value="An absolute URI that is the base structure from which this type is derived, either by
       specialization or constraint."/>
      <comments value="If differential constraints are specified in this structure, they are applied to the base
       in a &quot;differential&quot; fashion. If there is no base, then the differential constraints
       cannot be provided (snapshot only). Differential structures are useful for the editing
       perspective, and snapshot structures are suitable for operational use. The FHIR Project
       provides a number of tools/services to populate snapshots from differential constraints.
       Logical Models have a base of &quot;Element&quot; or another logical model."/>
      <min value="0"/>
      <max value="1"/>
      <type>
        <code value="uri"/>
      </type>
      <condition value="sdf-4"/>
      <isSummary value="true"/>
    </element>
    <element id="StructureDefinition.derivation">
      <path value="StructureDefinition.derivation"/>
      <short value="specialization | constraint - How relates to base definition"/>
      <definition value="How the type relates to the baseDefinition."/>
      <comments value="If the definition is a specialization, then it adds new elements in the differential,
       and the snapshot includes the inherited elements.  If the definition is a constraint,
       then it can not define new elements, it can only make new rules about existing content
       (see [Profiling Resources](profiling.html#resources))."/>
      <min value="0"/>
      <max value="1"/>
      <type>
        <code value="code"/>
      </type>
      <condition value="sdf-12"/>
      <isSummary value="true"/>
      <binding>
        <strength value="required"/>
        <description value="How a type relates to it's baseDefinition."/>
        <valueSetReference>
          <reference value="http://hl7.org/fhir/ValueSet/type-derivation-rule"/>
        </valueSetReference>
      </binding>
    </element>
    <element id="StructureDefinition.snapshot">
      <path value="StructureDefinition.snapshot"/>
      <short value="Snapshot view of the structure"/>
      <definition value="A snapshot view is expressed in a stand alone form that can be used and interpreted without
       considering the base StructureDefinition."/>
      <min value="0"/>
      <max value="1"/>
      <type>
        <code value="BackboneElement"/>
      </type>
      <condition value="sdf-6"/>
      <constraint>
        <key value="ele-1"/>
        <severity value="error"/>
        <human value="All FHIR elements must have a @value or children"/>
        <expression value="children().count() &gt; id.count()"/>
        <xpath value="@value|f:*|h:div"/>
        <source value="Element"/>
      </constraint>
      <constraint>
        <key value="sdf-15"/>
        <requirements value="No Type on the root element (snapshot)"/>
        <severity value="error"/>
        <human value="The first element in a snapshot has no type"/>
        <expression value="element.first().type.empty()"/>
        <xpath value="not(f:element[1]/f:type)"/>
      </constraint>
      <constraint>
        <key value="sdf-8"/>
        <severity value="error"/>
        <human value="In any snapshot, all the elements must be in the specified type"/>
        <expression value="element.first().path = %resource.type and element.tail().all(path.startsWith(%resource.type&amp;'.')
        )"/>
        <xpath value="f:element[1]/f:path/@value=parent::f:StructureDefinition/f:type/@value and count(f:element[position(
        )!=1])=count(f:element[position()!=1][starts-with(f:path/@value, concat(ancestor::f:StructureDefiniti
        on/f:type/@value, '.'))])"/>
      </constraint>
      <constraint>
        <key value="sdf-3"/>
        <severity value="error"/>
        <human value="Each element definition in a snapshot must have a formal definition and cardinalities"/>
        <expression value="element.all(definition and min and max)"/>
        <xpath value="count(f:element) = count(f:element[exists(f:definition) and exists(f:min) and exists(f:max)])"/>
      </constraint>
    </element>
    <element id="StructureDefinition.snapshot.id">
      <path value="StructureDefinition.snapshot.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). This may be any
       string value that does not contain spaces."/>
      <min value="0"/>
      <max value="1"/>
      <base>
        <path value="Element.id"/>
        <min value="0"/>
        <max value="1"/>
      </base>
      <type>
        <code value="string"/>
      </type>
      <mapping>
        <identity value="rim"/>
        <map value="n/a"/>
      </mapping>
    </element>
    <element id="StructureDefinition.snapshot.extension">
      <path value="StructureDefinition.snapshot.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. In order to make the use of extensions safe and manageable, there is a
       strict set of governance  applied to the definition and use of extensions. Though any
       implementer is allowed to define an extension, there is a set of requirements that SHALL
       be met as part of the definition of the extension."/>
      <comments 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>
      <mapping>
        <identity value="rim"/>
        <map value="n/a"/>
      </mapping>
    </element>
    <element id="StructureDefinition.snapshot.modifierExtension">
      <path value="StructureDefinition.snapshot.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 element, and that modifies the understanding of the element that contains it. Usually
       modifier elements provide negation or qualification. In order to make the use of extensions
       safe and manageable, there is a strict set of governance applied to the definition and
       use of extensions. Though any implementer 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."/>
      <comments 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"/>
      <alias value="modifiers"/>
      <min value="0"/>
      <max value="*"/>
      <base>
        <path value="BackboneElement.modifierExtension"/>
        <min value="0"/>
        <max value="*"/>
      </base>
      <type>
        <code value="Extension"/>
      </type>
      <isModifier value="true"/>
      <isSummary value="true"/>
      <mapping>
        <identity value="rim"/>
        <map value="N/A"/>
      </mapping>
    </element>
    <element id="StructureDefinition.snapshot.element">
      <path value="StructureDefinition.snapshot.element"/>
      <short value="Definition of elements in the resource (if no StructureDefinition)"/>
      <definition value="Captures constraints on each element within the resource."/>
      <min value="1"/>
      <max value="*"/>
      <type>
        <code value="ElementDefinition"/>
      </type>
      <condition value="sdf-3"/>
      <mapping>
        <identity value="iso11179"/>
        <map value="--"/>
      </mapping>
    </element>
    <element id="StructureDefinition.differential">
      <path value="StructureDefinition.differential"/>
      <short value="Differential view of the structure"/>
      <definition value="A differential view is expressed relative to the base StructureDefinition - a statement
       of differences that it applies."/>
      <min value="0"/>
      <max value="1"/>
      <type>
        <code value="BackboneElement"/>
      </type>
      <condition value="sdf-6"/>
      <constraint>
        <key value="ele-1"/>
        <severity value="error"/>
        <human value="All FHIR elements must have a @value or children"/>
        <expression value="children().count() &gt; id.count()"/>
        <xpath value="@value|f:*|h:div"/>
        <source value="Element"/>
      </constraint>
      <constraint>
        <key value="sdf-15a"/>
        <requirements value="No Type on the root element (differential)"/>
        <severity value="error"/>
        <human value="If the first element in a differential has no &quot;.&quot; in the path, it has no type"/>
        <expression value="element.first().path.contains('.').not() implies element.first().type.empty()"/>
        <xpath value="not(f:element[1][not(contains(f:path/@value, '.'))]/f:type)"/>
      </constraint>
      <constraint>
        <key value="sdf-20"/>
        <requirements value="no slicing on root"/>
        <severity value="error"/>
        <human value="No slicing on the root element"/>
        <expression value="element.first().slicing.empty()"/>
        <xpath value="not(f:element[1]/f:slicing)"/>
      </constraint>
      <constraint>
        <key value="sdf-8a"/>
        <severity value="error"/>
        <human value="In any differential, all the elements must be in the specified type"/>
        <expression value="element.first().path.startsWith(%resource.type) and element.tail().all(path.startsWith(%resource.typ
        e&amp;'.'))"/>
        <xpath value="count(f:element)=count(f:element[f:path/@value=ancestor::f:StructureDefinition/f:type/@value
         or starts-with(f:path/@value, concat(ancestor::f:StructureDefinition/f:type/@value, '.'))])"/>
      </constraint>
    </element>
    <element id="StructureDefinition.differential.id">
      <path value="StructureDefinition.differential.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). This may be any
       string value that does not contain spaces."/>
      <min value="0"/>
      <max value="1"/>
      <base>
        <path value="Element.id"/>
        <min value="0"/>
        <max value="1"/>
      </base>
      <type>
        <code value="string"/>
      </type>
      <mapping>
        <identity value="rim"/>
        <map value="n/a"/>
      </mapping>
    </element>
    <element id="StructureDefinition.differential.extension">
      <path value="StructureDefinition.differential.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. In order to make the use of extensions safe and manageable, there is a
       strict set of governance  applied to the definition and use of extensions. Though any
       implementer is allowed to define an extension, there is a set of requirements that SHALL
       be met as part of the definition of the extension."/>
      <comments 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>
      <mapping>
        <identity value="rim"/>
        <map value="n/a"/>
      </mapping>
    </element>
    <element id="StructureDefinition.differential.modifierExtension">
      <path value="StructureDefinition.differential.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 element, and that modifies the understanding of the element that contains it. Usually
       modifier elements provide negation or qualification. In order to make the use of extensions
       safe and manageable, there is a strict set of governance applied to the definition and
       use of extensions. Though any implementer 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."/>
      <comments 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"/>
      <alias value="modifiers"/>
      <min value="0"/>
      <max value="*"/>
      <base>
        <path value="BackboneElement.modifierExtension"/>
        <min value="0"/>
        <max value="*"/>
      </base>
      <type>
        <code value="Extension"/>
      </type>
      <isModifier value="true"/>
      <isSummary value="true"/>
      <mapping>
        <identity value="rim"/>
        <map value="N/A"/>
      </mapping>
    </element>
    <element id="StructureDefinition.differential.element">
      <path value="StructureDefinition.differential.element"/>
      <short value="Definition of elements in the resource (if no StructureDefinition)"/>
      <definition value="Captures constraints on each element within the resource."/>
      <min value="1"/>
      <max value="*"/>
      <type>
        <code value="ElementDefinition"/>
      </type>
      <mapping>
        <identity value="iso11179"/>
        <map value="--"/>
      </mapping>
    </element>
  </snapshot>
  <differential>
    <element id="StructureDefinition">
      <path value="StructureDefinition"/>
      <short value="Structural Definition"/>
      <definition value="A definition of a FHIR structure. This resource is used to describe the underlying resources,
       data types defined in FHIR, and also for describing extensions, and constraints on resources
       and data types."/>
      <alias value="Template"/>
      <alias value="Profile"/>
      <min value="0"/>
      <max value="*"/>
      <constraint>
        <key value="sdf-9"/>
        <requirements value="Because these 3 fields seem to be have overlapping meaning with the ones in the root of
         StructureDefinition"/>
        <severity value="error"/>
        <human value="In any snapshot or differential, no label, code or requirements on the an element without
         a &quot;.&quot; in the path (e.g. the first element)"/>
        <expression value="children().element.first().label.empty() and children().element.first().code.empty() and
         children().element.first().requirements.empty()"/>
        <xpath value="not(exists(f:snapshot/f:element[not(contains(f:path/@value, '.')) and (f:label or f:code
         or f:requirements)])) and not(exists(f:differential/f:element[not(contains(f:path/@value,
         '.')) and (f:label or f:code or f:requirements)]))"/>
      </constraint>
      <constraint>
        <key value="sdf-19"/>
        <requirements value="custom types only in logical models"/>
        <severity value="error"/>
        <human value="Custom types can only be used in logical models"/>
        <expression value="kind = 'logical' or (differential.element.type.code.all(hasValue() implies matches('^[a-zA-Z0-9]+$')
        ) and snapshot.element.type.code.all(hasValue() implies matches('^[a-zA-Z0-9]+$')))"/>
        <xpath value="(f:kind/@value = 'logical') or (true)"/>
      </constraint>
      <constraint>
        <key value="sdf-16"/>
        <requirements value="element ids need to be unique"/>
        <severity value="error"/>
        <human value="All element definitions must have unique ids (snapshot)"/>
        <expression value="snapshot.element.id.trace('ids').isDistinct()"/>
        <xpath value="count(*/f:element)=count(*/f:element/@id)"/>
      </constraint>
      <constraint>
        <key value="sdf-18"/>
        <requirements value="contextInvariant"/>
        <severity value="error"/>
        <human value="Context Invariants can only be used for extensions"/>
        <expression value="contextInvariant.exists() implies type = 'Extension'"/>
        <xpath value="not(exists(f:contextInvariant)) or (f:type/@value = 'Extension')"/>
      </constraint>
      <constraint>
        <key value="sdf-17"/>
        <requirements value="element ids need to be unique"/>
        <severity value="error"/>
        <human value="All element definitions must have unique ids (diff)"/>
        <expression value="differential.element.id.trace('ids').isDistinct()"/>
        <xpath value="count(*/f:element)=count(*/f:element/@id)"/>
      </constraint>
      <constraint>
        <key value="sdf-12"/>
        <requirements value="Ensure that element.base appears with base or not"/>
        <severity value="error"/>
        <human value="element.base cannot appear if there is no base on the structure definition"/>
        <expression value="snapshot.exists() implies (snapshot.element.base.exists() = baseDefinition.exists())"/>
        <xpath value="f:baseDefinition or not(exists(f:snapshot/f:element/f:base) or exists(f:differential/f:element/f:bas
        e))"/>
      </constraint>
      <constraint>
        <key value="sdf-11"/>
        <requirements value="Ensure that the type is not inconsistent with the other information in the structure"/>
        <severity value="error"/>
        <human value="If there's a type, its content must match the path name in the first element of a snapshot"/>
        <expression value="snapshot.empty() or snapshot.element.first().path = type"/>
        <xpath value="not(exists(f:snapshot)) or (f:type/@value = f:snapshot/f:element[1]/f:path/@value)"/>
      </constraint>
      <constraint>
        <key value="sdf-14"/>
        <requirements value="elements have id"/>
        <severity value="error"/>
        <human value="All element definitions must have an id"/>
        <expression value="snapshot.element.all(id.exists()) and differential.element.all(id.exists())"/>
        <xpath value="count(*/f:element)=count(*/f:element/@id)"/>
      </constraint>
      <constraint>
        <key value="sdf-1"/>
        <severity value="error"/>
        <human value="Element paths must be unique unless the structure is a constraint"/>
        <expression value="derivation = 'constraint' or snapshot.element.select(path).isDistinct()"/>
        <xpath value="(f:derivation/@value = 'constraint') or (count(f:snapshot/f:element) = count(distinct-values(f:snaps
        hot/f:element/f:path/@value)))"/>
      </constraint>
      <constraint>
        <key value="sdf-7"/>
        <severity value="error"/>
        <human value="If the structure describes a base Resource or Type, the URL has to start with &quot;http://hl7.org/f
        hir/StructureDefinition/&quot; and the tail must match the id"/>
        <expression value="(derivation = 'constraint') or (kind = 'logical') or (url = 'http://hl7.org/fhir/StructureDefinition
        /'+id)"/>
        <xpath value="(f:derivation/@value = 'constraint') or (f:derivation/@value = 'logical') or (f:url/@value=concat('h
        ttp://hl7.org/fhir/StructureDefinition/', f:id/@value))"/>
      </constraint>
      <constraint>
        <key value="sdf-6"/>
        <severity value="error"/>
        <human value="A structure must have either a differential, or a snapshot (or both)"/>
        <expression value="snapshot.exists() or differential.exists()"/>
        <xpath value="exists(f:snapshot) or exists(f:differential)"/>
      </constraint>
      <constraint>
        <key value="sdf-5"/>
        <severity value="error"/>
        <human value="If the structure defines an extension then the structure must have context information"/>
        <expression value="type != 'Extension' or derivation = 'specialization' or (context.exists() and contextType.exists())"/>
        <xpath value="not(f:type/@value = 'extension') or (f:derivation/@value = 'specialization') or (exists(f:context)
         and exists(f:contextType))"/>
      </constraint>
      <constraint>
        <key value="sdf-4"/>
        <requirements value="Ensure that the base types are abstract"/>
        <severity value="error"/>
        <human value="If the structure is not abstract, then there SHALL be a baseDefinition"/>
        <expression value="abstract = true or baseDefinition.exists()"/>
        <xpath value="(f:abstract/@value=true()) or exists(f:baseDefinition)"/>
      </constraint>
      <mapping>
        <identity value="rim"/>
        <map value="n/a"/>
      </mapping>
      <mapping>
        <identity value="w5"/>
        <map value="conformance.content"/>
      </mapping>
    </element>
    <element id="StructureDefinition.url">
      <path value="StructureDefinition.url"/>
      <short value="Logical uri to reference this structure definition (globally unique)"/>
      <definition value="An absolute URL that is used to identify this structure definition when it is referenced
       in a specification, model, design or an instance. This SHALL be a URL, SHOULD be globally
       unique, and SHOULD be an address at which this structure definition is (or will be) published.
       The URL SHOULD include the major version of the structure definition. For more information
       see [Technical and Business Versions](resource.html#versions)."/>
      <comments value="Can be a urn:uuid: or a urn:oid:, but real http: addresses are preferred."/>
      <requirements value="Allows the structure definition to be referenced by a single globally unique identifier."/>
      <alias value="url"/>
      <alias value="authoritative-url"/>
      <alias value="destination"/>
      <alias value="identity"/>
      <min value="1"/>
      <max value="1"/>
      <type>
        <code value="uri"/>
      </type>
      <isSummary value="true"/>
      <mapping>
        <identity value="w5"/>
        <map value="id"/>
      </mapping>
    </element>
    <element id="StructureDefinition.identifier">
      <path value="StructureDefinition.identifier"/>
      <short value="Additional identifier for the structure definition"/>
      <definition value="A formal identifier that is used to identify this structure definition when it is represented
       in other formats, or referenced in a specification, model, design or an instance."/>
      <comments value="Typically, this is used for identifiers that can go in an HL7 v3 II data type - e.g. to
       identify this structure definition outside of FHIR, where the logical URL is not possible
       to use."/>
      <requirements value="Allows externally provided and/or useable business identifiers to be easily associated
       with the module."/>
      <min value="0"/>
      <max value="*"/>
      <type>
        <code value="Identifier"/>
      </type>
      <isSummary value="true"/>
      <mapping>
        <identity value="iso11179"/>
        <map value="Identifier part"/>
      </mapping>
      <mapping>
        <identity value="objimpl"/>
        <map value="no-gen-base"/>
      </mapping>
      <mapping>
        <identity value="w5"/>
        <map value="id"/>
      </mapping>
    </element>
    <element id="StructureDefinition.version">
      <path value="StructureDefinition.version"/>
      <short value="Business version of the structure definition"/>
      <definition value="The identifier that is used to identify this version of the structure definition when
       it is referenced in a specification, model, design or instance. This is an arbitrary value
       managed by the structure definition 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 are orderable."/>
      <comments value="There may be multiple different instances of a structure definition that have the same
       identifier but different versions."/>
      <min value="0"/>
      <max value="1"/>
      <type>
        <code value="string"/>
      </type>
      <isSummary value="true"/>
      <mapping>
        <identity value="iso11179"/>
        <map value="Version"/>
      </mapping>
      <mapping>
        <identity value="w5"/>
        <map value="id.version"/>
      </mapping>
    </element>
    <element id="StructureDefinition.name">
      <path value="StructureDefinition.name"/>
      <short value="Name for this structure definition (Computer friendly)"/>
      <definition value="A natural language name identifying the structure definition. This name should be usable
       as an identifier for the module by machine processing applications such as code generation."/>
      <comments value="The name is not expected to be globally unique. The name should be a simple alpha-numeric
       type name to ensure it is computable friendly."/>
      <requirements value="Support human navigation &amp; code generation."/>
      <min value="1"/>
      <max value="1"/>
      <type>
        <code value="string"/>
      </type>
      <isSummary value="true"/>
    </element>
    <element id="StructureDefinition.title">
      <path value="StructureDefinition.title"/>
      <short value="Name for this structure definition (Human friendly)"/>
      <definition value="A short, descriptive, user-friendly title for the structure definition."/>
      <comments value="null Applications don't have to use this name, but can always fall back to it. The title
       also corresponds to the label for the root element."/>
      <min value="0"/>
      <max value="1"/>
      <type>
        <code value="string"/>
      </type>
      <isSummary value="true"/>
    </element>
    <element id="StructureDefinition.status">
      <path value="StructureDefinition.status"/>
      <short value="draft | active | retired"/>
      <definition value="The status of this structure definition. Enables tracking the life-cycle of the content."/>
      <comments value="Allows filtering of structure definition that are appropriate for use vs. not."/>
      <min value="1"/>
      <max value="1"/>
      <type>
        <code value="code"/>
      </type>
      <isModifier value="true"/>
      <isSummary value="true"/>
      <binding>
        <strength value="required"/>
        <description value="The lifecycle status of a Value Set or Concept Map."/>
        <valueSetReference>
          <reference value="http://hl7.org/fhir/ValueSet/publication-status"/>
        </valueSetReference>
      </binding>
      <mapping>
        <identity value="iso11179"/>
        <map value="Registration status"/>
      </mapping>
      <mapping>
        <identity value="w5"/>
        <map value="status"/>
      </mapping>
    </element>
    <element id="StructureDefinition.experimental">
      <path value="StructureDefinition.experimental"/>
      <short value="If for testing purposes, not real usage"/>
      <definition value="A flag to indicate that this structure definition is authored for testing purposes (or
       education/evaluation/marketing), and is not intended to be used for genuine usage."/>
      <comments value="Allows filtering of structure definition that are appropriate for use vs. not."/>
      <requirements value="Enables experimental content to be developed following the same life-cycle as a production-level
       structure definition would."/>
      <min value="0"/>
      <max value="1"/>
      <type>
        <code value="boolean"/>
      </type>
      <isModifier value="true"/>
      <isSummary value="true"/>
      <mapping>
        <identity value="iso11179"/>
        <map value="Registration status"/>
      </mapping>
      <mapping>
        <identity value="w5"/>
        <map value="class"/>
      </mapping>
    </element>
    <element id="StructureDefinition.publisher">
      <path value="StructureDefinition.publisher"/>
      <short value="Name of the publisher (Organization or individual)"/>
      <definition value="The name of the individual or organization that published the structure definition."/>
      <comments value="Usually an organization, but may be an individual. The publisher (or steward) of the structure
       definition is the organization or individual primarily responsible for the maintenance
       and upkeep of the structure definition. 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 structure definition. This item SHOULD
       be populated unless the information is available from context."/>
      <requirements value="Helps establish the &quot;authority/credibility&quot; of the structure definition.  May
       also allow for contact."/>
      <min value="0"/>
      <max value="1"/>
      <type>
        <code value="string"/>
      </type>
      <isSummary value="true"/>
      <mapping>
        <identity value="iso11179"/>
        <map value="Registration Authority"/>
      </mapping>
      <mapping>
        <identity value="w5"/>
        <map value="who.witness"/>
      </mapping>
    </element>
    <element id="StructureDefinition.contact">
      <path value="StructureDefinition.contact"/>
      <short value="Contact details for the publisher"/>
      <definition value="Contact details to assist a user in finding and communicating with the publisher."/>
      <comments value="May be a web site, an email address, a telephone number, etc."/>
      <min value="0"/>
      <max value="*"/>
      <type>
        <code value="ContactDetail"/>
      </type>
      <isSummary value="true"/>
    </element>
    <element id="StructureDefinition.date">
      <path value="StructureDefinition.date"/>
      <short value="Date this was last changed"/>
      <definition value="The date  (and optionally time) when the structure definition was published. The date
       must change when the business version changes, if it does, and it must change if the status
       code changes. In addition, it should change when the substantive content of the structure
       definition changes."/>
      <comments value="Note that this is not the same as the resource last-modified-date, since the resource
       may be a secondary representation of the structure definition. Additional specific dates
       may be added as extensions."/>
      <min value="0"/>
      <max value="1"/>
      <type>
        <code value="dateTime"/>
      </type>
      <isSummary value="true"/>
      <mapping>
        <identity value="w5"/>
        <map value="when.recorded"/>
      </mapping>
    </element>
    <element id="StructureDefinition.description">
      <path value="StructureDefinition.description"/>
      <short value="Natural language description of the structure definition"/>
      <definition value="A free text natural language description of the structure definition from the consumer's
       perspective."/>
      <comments value="This description can be used to capture details such as why the structure definition was
       built, comments about misuse, instructions for clinical use and interpretation, literature
       references, examples from the paper world, etc. It is not a rendering of the module as
       conveyed in the text field of the resource itself. This item SHOULD be populated unless
       the information is available from context."/>
      <min value="0"/>
      <max value="1"/>
      <type>
        <code value="markdown"/>
      </type>
    </element>
    <element id="StructureDefinition.useContext">
      <path value="StructureDefinition.useContext"/>
      <short value="Content intends to support these contexts"/>
      <definition value="The content was developed with a focus and intent of supporting the contexts that are
       listed. These terms may be used to assist with indexing and searching of code system definitions."/>
      <comments value="When multiple usageContexts are specified, there is no expectation for whether all or
       any of the contexts apply."/>
      <requirements value="Assist in searching for appropriate content."/>
      <min value="0"/>
      <max value="*"/>
      <type>
        <code value="UsageContext"/>
      </type>
      <isSummary value="true"/>
    </element>
    <element id="StructureDefinition.jurisdiction">
      <path value="StructureDefinition.jurisdiction"/>
      <short value="Intended jurisdiction for structure definition (if applicable)"/>
      <definition value="A jurisdiction in which the structure definition is intended to be used."/>
      <min value="0"/>
      <max value="*"/>
      <type>
        <code value="CodeableConcept"/>
      </type>
      <isSummary value="true"/>
      <binding>
        <strength value="extensible"/>
        <description value="Countries and regions within which this artifact is targeted for use"/>
        <valueSetReference>
          <reference value="http://hl7.org/fhir/ValueSet/jurisdiction"/>
        </valueSetReference>
      </binding>
    </element>
    <element id="StructureDefinition.purpose">
      <path value="StructureDefinition.purpose"/>
      <short value="Why this structure definition is defined"/>
      <definition value="Explains why this structure definition is needed and why it has been designed as it has."/>
      <comments value="This element does not describe the usage of the structure definition (See, e.g, the comments
       element, or relatedArtifacts), rather it's for 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 structure definition."/>
      <min value="0"/>
      <max value="1"/>
      <type>
        <code value="markdown"/>
      </type>
      <mapping>
        <identity value="objimpl"/>
        <map value="no-gen-base"/>
      </mapping>
      <mapping>
        <identity value="w5"/>
        <map value="why"/>
      </mapping>
    </element>
    <element id="StructureDefinition.copyright">
      <path value="StructureDefinition.copyright"/>
      <short value="Use and/or publishing restrictions"/>
      <definition value="A copyright statement relating to the structure definition and/or its contents. Copyright
       statements are generally legal restrictions on the use and publishing of the structure
       definition."/>
      <requirements value="Consumers of the library must be able to determine any legal restrictions on the use of
       the structure definition and/or its content."/>
      <alias value="License"/>
      <alias value="Restrictions"/>
      <min value="0"/>
      <max value="1"/>
      <type>
        <code value="markdown"/>
      </type>
      <mapping>
        <identity value="objimpl"/>
        <map value="no-gen-base"/>
      </mapping>
    </element>
    <element id="StructureDefinition.keyword">
      <path value="StructureDefinition.keyword"/>
      <short value="Assist with indexing and finding"/>
      <definition value="A set of key words or terms from external terminologies that may be used to assist with
       indexing and searching of templates."/>
      <requirements value="Assist in searching for appropriate StructureDefinitions."/>
      <min value="0"/>
      <max value="*"/>
      <type>
        <code value="Coding"/>
      </type>
      <isSummary value="true"/>
      <binding>
        <strength value="example"/>
        <description value="Codes for the meaning of the defined structure (SNOMED CT and LOINC codes, as an example)."/>
        <valueSetReference>
          <reference value="http://hl7.org/fhir/ValueSet/profile-code"/>
        </valueSetReference>
      </binding>
      <mapping>
        <identity value="iso11179"/>
        <map value="keywords"/>
      </mapping>
    </element>
    <element id="StructureDefinition.fhirVersion">
      <path value="StructureDefinition.fhirVersion"/>
      <short value="FHIR Version this StructureDefinition targets"/>
      <definition value="The version of the FHIR specification on which this StructureDefinition is based - this
       is the formal version of the specification, without the revision number, e.g. [publication].[major].
      [minor], which is 1.8.0 for this version."/>
      <comments value="A StructureDefinition does not need to specify the target it applies to,as StructureDefinitions
       will often be valid across multiple versions of FHIR. FHIR tooling can determine whether
       a StructureDefinition is consistent with a particular StructureDefinition if desired."/>
      <min value="0"/>
      <max value="1"/>
      <type>
        <code value="id"/>
      </type>
      <isSummary value="true"/>
    </element>
    <element id="StructureDefinition.mapping">
      <path value="StructureDefinition.mapping"/>
      <short value="External specification that the content is mapped to"/>
      <definition value="An external specification that the content is mapped to."/>
      <min value="0"/>
      <max value="*"/>
      <type>
        <code value="BackboneElement"/>
      </type>
      <constraint>
        <key value="sdf-2"/>
        <severity value="error"/>
        <human value="Must have at least a name or a uri (or both)"/>
        <expression value="name.exists() or uri.exists()"/>
        <xpath value="exists(f:uri) or exists(f:name)"/>
      </constraint>
    </element>
    <element id="StructureDefinition.mapping.identity">
      <path value="StructureDefinition.mapping.identity"/>
      <short value="Internal id when this mapping is used"/>
      <definition value="An Internal id that is used to identify this mapping set when specific mappings are made."/>
      <comments value="The specification is described once, with general comments, and then specific mappings
       are made that reference this declaration."/>
      <min value="1"/>
      <max value="1"/>
      <type>
        <code value="id"/>
      </type>
    </element>
    <element id="StructureDefinition.mapping.uri">
      <path value="StructureDefinition.mapping.uri"/>
      <short value="Identifies what this mapping refers to"/>
      <definition value="An absolute URI that identifies the specification that this mapping is expressed to."/>
      <comments value="A formal identity for the specification being mapped to helps with identifying maps consistently."/>
      <min value="0"/>
      <max value="1"/>
      <type>
        <code value="uri"/>
      </type>
      <condition value="sdf-2"/>
    </element>
    <element id="StructureDefinition.mapping.name">
      <path value="StructureDefinition.mapping.name"/>
      <short value="Names what this mapping refers to"/>
      <definition value="A name for the specification that is being mapped to."/>
      <min value="0"/>
      <max value="1"/>
      <type>
        <code value="string"/>
      </type>
      <condition value="sdf-2"/>
    </element>
    <element id="StructureDefinition.mapping.comments">
      <path value="StructureDefinition.mapping.comments"/>
      <short value="Versions, Issues, Scope limitations etc."/>
      <definition value="Comments about this mapping, including version notes, issues, scope limitations, and other
       important notes for usage."/>
      <min value="0"/>
      <max value="1"/>
      <type>
        <code value="string"/>
      </type>
    </element>
    <element id="StructureDefinition.kind">
      <path value="StructureDefinition.kind"/>
      <short value="primitive-type | complex-type | resource | logical"/>
      <definition value="Defines the kind of structure that this definition is describing."/>
      <min value="1"/>
      <max value="1"/>
      <type>
        <code value="code"/>
      </type>
      <isSummary value="true"/>
      <binding>
        <strength value="required"/>
        <description value="Defines the type of structure that a definition is describing."/>
        <valueSetReference>
          <reference value="http://hl7.org/fhir/ValueSet/structure-definition-kind"/>
        </valueSetReference>
      </binding>
    </element>
    <element id="StructureDefinition.abstract">
      <path value="StructureDefinition.abstract"/>
      <short value="Whether the structure is abstract"/>
      <definition value="Whether structure this definition describes is abstract or not  - that is, whether the
       structure is not intended to be instantiated. For Resources and Data types, abstract types
       will never be exchanged  between systems."/>
      <comments value="Abstract Resources cannot be instantiated - a concrete sub-type must be used. Abstract
       datatypes and extensions cannot be used in an instance. For logical models, the exact
       implication of &quot;abstract&quot; will rest with the author, depending how the logical
       model is used. Flagging a constraint structure as abstract conveys design intent but makes
       no difference to how the structure definition is handled. Note that inline declared elements
       that are given the type &quot;Element&quot; in the profile, but have children described,
       are anonymous concrete types that specialise Element."/>
      <min value="1"/>
      <max value="1"/>
      <type>
        <code value="boolean"/>
      </type>
      <isSummary value="true"/>
    </element>
    <element id="StructureDefinition.contextType">
      <path value="StructureDefinition.contextType"/>
      <short value="resource | datatype | extension"/>
      <definition value="If this is an extension, Identifies the context within FHIR resources where the extension
       can be used."/>
      <min value="0"/>
      <max value="1"/>
      <type>
        <code value="code"/>
      </type>
      <condition value="sdf-5"/>
      <isSummary value="true"/>
      <binding>
        <strength value="required"/>
        <description value="How an extension context is interpreted."/>
        <valueSetReference>
          <reference value="http://hl7.org/fhir/ValueSet/extension-context"/>
        </valueSetReference>
      </binding>
    </element>
    <element id="StructureDefinition.context">
      <path value="StructureDefinition.context"/>
      <short value="Where the extension can be used in instances"/>
      <definition value="Identifies the types of resource or data type elements to which the extension can be applied."/>
      <comments value="If the context is an element that can have multiple types, then use (e.g.) value[x] if
       the extension works on all choice types, or otherwise an enumeration of explicitly named
       elements if not. Note that a context of &quot;string&quot; doesn't mean that the extension
       can be used with one of the string patterns such as &quot;id&quot; etc."/>
      <min value="0"/>
      <max value="*"/>
      <type>
        <code value="string"/>
      </type>
      <condition value="sdf-5"/>
      <isSummary value="true"/>
    </element>
    <element id="StructureDefinition.contextInvariant">
      <path value="StructureDefinition.contextInvariant"/>
      <short value="FluentPath invariants - when the extension can be used"/>
      <definition value="A set of rules as Fluent Invariants about when the extension can be used (e.g. co-occurance
       variants for the extension)."/>
      <comments value="All the rules must be true. When evaluating the invariant, the fluentpath focus is the
       element that holds the extension, and %extension refers to the extension itself."/>
      <min value="0"/>
      <max value="*"/>
      <type>
        <code value="string"/>
      </type>
      <condition value="sdf-18"/>
      <isSummary value="true"/>
    </element>
    <element id="StructureDefinition.type">
      <path value="StructureDefinition.type"/>
      <short value="Type defined or constrained by this structure"/>
      <definition value="The type this structure is describes. If the derivation kind is 'specialization' then
       this is the master definition for a type, and there is always one of these (a data type,
       an extension, a resource, including abstract ones). Otherwise the structure definition
       is a constraint on the stated type (and in this case, the type cannot be an abstract type)."/>
      <comments value="Note that in the case of constraints, the type could be determined by chasing through
       the baseDefinition references until a concrete structure (derivation = specialization)
       is reached, or by looking at the path of the first element in the snapshot - if present
       - but providing the type directly makes for simpler tooling and indexing."/>
      <min value="1"/>
      <max value="1"/>
      <type>
        <code value="code"/>
      </type>
      <condition value="sdf-4"/>
      <condition value="sdf-11"/>
      <isSummary value="true"/>
      <binding>
        <strength value="extensible"/>
        <description value="Either a resource or a data type, including logical model types"/>
        <valueSetReference>
          <reference value="http://hl7.org/fhir/ValueSet/defined-types"/>
        </valueSetReference>
      </binding>
    </element>
    <element id="StructureDefinition.baseDefinition">
      <path value="StructureDefinition.baseDefinition"/>
      <short value="Definition that this type is constrained/specialized from"/>
      <definition value="An absolute URI that is the base structure from which this type is derived, either by
       specialization or constraint."/>
      <comments value="If differential constraints are specified in this structure, they are applied to the base
       in a &quot;differential&quot; fashion. If there is no base, then the differential constraints
       cannot be provided (snapshot only). Differential structures are useful for the editing
       perspective, and snapshot structures are suitable for operational use. The FHIR Project
       provides a number of tools/services to populate snapshots from differential constraints.
       Logical Models have a base of &quot;Element&quot; or another logical model."/>
      <min value="0"/>
      <max value="1"/>
      <type>
        <code value="uri"/>
      </type>
      <condition value="sdf-4"/>
      <isSummary value="true"/>
    </element>
    <element id="StructureDefinition.derivation">
      <path value="StructureDefinition.derivation"/>
      <short value="specialization | constraint - How relates to base definition"/>
      <definition value="How the type relates to the baseDefinition."/>
      <comments value="If the definition is a specialization, then it adds new elements in the differential,
       and the snapshot includes the inherited elements.  If the definition is a constraint,
       then it can not define new elements, it can only make new rules about existing content
       (see [Profiling Resources](profiling.html#resources))."/>
      <min value="0"/>
      <max value="1"/>
      <type>
        <code value="code"/>
      </type>
      <condition value="sdf-12"/>
      <isSummary value="true"/>
      <binding>
        <strength value="required"/>
        <description value="How a type relates to it's baseDefinition."/>
        <valueSetReference>
          <reference value="http://hl7.org/fhir/ValueSet/type-derivation-rule"/>
        </valueSetReference>
      </binding>
    </element>
    <element id="StructureDefinition.snapshot">
      <path value="StructureDefinition.snapshot"/>
      <short value="Snapshot view of the structure"/>
      <definition value="A snapshot view is expressed in a stand alone form that can be used and interpreted without
       considering the base StructureDefinition."/>
      <min value="0"/>
      <max value="1"/>
      <type>
        <code value="BackboneElement"/>
      </type>
      <condition value="sdf-6"/>
      <constraint>
        <key value="sdf-15"/>
        <requirements value="No Type on the root element (snapshot)"/>
        <severity value="error"/>
        <human value="The first element in a snapshot has no type"/>
        <expression value="element.first().type.empty()"/>
        <xpath value="not(f:element[1]/f:type)"/>
      </constraint>
      <constraint>
        <key value="sdf-8"/>
        <severity value="error"/>
        <human value="In any snapshot, all the elements must be in the specified type"/>
        <expression value="element.first().path = %resource.type and element.tail().all(path.startsWith(%resource.type&amp;'.')
        )"/>
        <xpath value="f:element[1]/f:path/@value=parent::f:StructureDefinition/f:type/@value and count(f:element[position(
        )!=1])=count(f:element[position()!=1][starts-with(f:path/@value, concat(ancestor::f:StructureDefiniti
        on/f:type/@value, '.'))])"/>
      </constraint>
      <constraint>
        <key value="sdf-3"/>
        <severity value="error"/>
        <human value="Each element definition in a snapshot must have a formal definition and cardinalities"/>
        <expression value="element.all(definition and min and max)"/>
        <xpath value="count(f:element) = count(f:element[exists(f:definition) and exists(f:min) and exists(f:max)])"/>
      </constraint>
    </element>
    <element id="StructureDefinition.snapshot.element">
      <path value="StructureDefinition.snapshot.element"/>
      <short value="Definition of elements in the resource (if no StructureDefinition)"/>
      <definition value="Captures constraints on each element within the resource."/>
      <min value="1"/>
      <max value="*"/>
      <type>
        <code value="ElementDefinition"/>
      </type>
      <condition value="sdf-3"/>
      <mapping>
        <identity value="iso11179"/>
        <map value="--"/>
      </mapping>
    </element>
    <element id="StructureDefinition.differential">
      <path value="StructureDefinition.differential"/>
      <short value="Differential view of the structure"/>
      <definition value="A differential view is expressed relative to the base StructureDefinition - a statement
       of differences that it applies."/>
      <min value="0"/>
      <max value="1"/>
      <type>
        <code value="BackboneElement"/>
      </type>
      <condition value="sdf-6"/>
      <constraint>
        <key value="sdf-15a"/>
        <requirements value="No Type on the root element (differential)"/>
        <severity value="error"/>
        <human value="If the first element in a differential has no &quot;.&quot; in the path, it has no type"/>
        <expression value="element.first().path.contains('.').not() implies element.first().type.empty()"/>
        <xpath value="not(f:element[1][not(contains(f:path/@value, '.'))]/f:type)"/>
      </constraint>
      <constraint>
        <key value="sdf-20"/>
        <requirements value="no slicing on root"/>
        <severity value="error"/>
        <human value="No slicing on the root element"/>
        <expression value="element.first().slicing.empty()"/>
        <xpath value="not(f:element[1]/f:slicing)"/>
      </constraint>
      <constraint>
        <key value="sdf-8a"/>
        <severity value="error"/>
        <human value="In any differential, all the elements must be in the specified type"/>
        <expression value="element.first().path.startsWith(%resource.type) and element.tail().all(path.startsWith(%resource.typ
        e&amp;'.'))"/>
        <xpath value="count(f:element)=count(f:element[f:path/@value=ancestor::f:StructureDefinition/f:type/@value
         or starts-with(f:path/@value, concat(ancestor::f:StructureDefinition/f:type/@value, '.'))])"/>
      </constraint>
    </element>
    <element id="StructureDefinition.differential.element">
      <path value="StructureDefinition.differential.element"/>
      <short value="Definition of elements in the resource (if no StructureDefinition)"/>
      <definition value="Captures constraints on each element within the resource."/>
      <min value="1"/>
      <max value="*"/>
      <type>
        <code value="ElementDefinition"/>
      </type>
      <mapping>
        <identity value="iso11179"/>
        <map value="--"/>
      </mapping>
    </element>
  </differential>
</StructureDefinition>

Usage note: every effort has been made to ensure that the examples are correct and useful, but they are not a normative part of the specification.