CDC National Healthcare Safety Network (NHSN) Digital Quality Measures (dQM) Content Package IG
1.0.0 - Release 1

CDC National Healthcare Safety Network (NHSN) Digital Quality Measures (dQM) Content Package IG - Downloaded Version 1.0.0 See the Directory of published versions

## Extension: OriginalElementValue - XML Profile

Page standards status: Trial-use | Maturity Level: 1

XML representation of the link-original-element-value-extension extension.

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    <StructureDefinition xmlns="http://hl7.org/fhir">
      <id value="link-original-element-value-extension"/>
      <text>
        <status value="extensions"/>
        <div xmlns="http://www.w3.org/1999/xhtml"><p class="res-header-id"><b>Generated Narrative: StructureDefinition link-original-element-value-extension</b></p><a name="link-original-element-value-extension"> </a><a name="hclink-original-element-value-extension"> </a><table border="0" cellpadding="0" cellspacing="0" style="border: 0px #F0F0F0 solid; font-size: 11px; font-family: verdana; vertical-align: top;"><tr style="border: 1px #F0F0F0 solid; font-size: 11px; font-family: verdana; vertical-align: top"><th style="vertical-align: top; text-align : var(--ig-left,left); background-color: white; border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px; padding-top: 3px; padding-bottom: 3px" class="hierarchy"><a href="https://build.fhir.org/ig/FHIR/ig-guidance/readingIgs.html#table-views" title="The logical name of the element">Name</a></th><th style="vertical-align: top; text-align : var(--ig-left,left); background-color: white; border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px; padding-top: 3px; padding-bottom: 3px" class="hierarchy"><a href="https://build.fhir.org/ig/FHIR/ig-guidance/readingIgs.html#table-views" title="Information about the use of the element">Flags</a></th><th style="vertical-align: top; text-align : var(--ig-left,left); background-color: white; border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px; padding-top: 3px; padding-bottom: 3px" class="hierarchy"><a href="https://build.fhir.org/ig/FHIR/ig-guidance/readingIgs.html#table-views" title="Minimum and Maximum # of times the element can appear in the instance">Card.</a></th><th style="vertical-align: top; text-align : var(--ig-left,left); background-color: white; border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px; padding-top: 3px; padding-bottom: 3px; width: 100px" class="hierarchy"><a href="https://build.fhir.org/ig/FHIR/ig-guidance/readingIgs.html#table-views" title="Reference to the type of the element">Type</a></th><th style="vertical-align: top; text-align : var(--ig-left,left); background-color: white; border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px; padding-top: 3px; padding-bottom: 3px" class="hierarchy"><a href="https://build.fhir.org/ig/FHIR/ig-guidance/readingIgs.html#table-views" title="Additional information about the element">Description &amp; Constraints</a><span style="float: right"><a href="https://build.fhir.org/ig/FHIR/ig-guidance/readingIgs.html#table-views" title="Legend for this format"><img src="data:image/png;base64, " alt="doco" style="background-color: inherit"/></a></span></th></tr><tr style="border: 0px #F0F0F0 solid; padding:0px; vertical-align: top; background-color: white"><td style="vertical-align: top; text-align : var(--ig-left,left); background-color: white; border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px; white-space: nowrap; background-image: url(tbl_bck1.png)" class="hierarchy"><img src="tbl_spacer.png" alt="." style="background-color: inherit" class="hierarchy"/><img src="icon_element.gif" alt="." style="background-color: white; background-color: inherit" title="Element" class="hierarchy"/> <a href="StructureDefinition-link-original-element-value-extension-definitions.html#Extension" title="This extension stores the original value of an element from a source that was modified by a processing system (e.g., NHSNLink) to make it usable for NHSN. Modification may include changing logically invalid data, changing data that does not match specification requirements (this modification is used sparingly, for specific instances only), or normalizing data.">Extension</a><a name="Extension"> </a></td><td style="vertical-align: top; text-align : var(--ig-left,left); background-color: white; border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px" class="hierarchy"/><td style="vertical-align: top; text-align : var(--ig-left,left); background-color: white; border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px" class="hierarchy"><span style="opacity: 0.5">0</span><span style="opacity: 0.5">..</span><span style="opacity: 0.5">*</span></td><td style="vertical-align: top; text-align : var(--ig-left,left); background-color: white; border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px" class="hierarchy"><a href="http://hl7.org/fhir/R4/extensibility.html#Extension">Extension</a></td><td style="vertical-align: top; text-align : var(--ig-left,left); background-color: white; border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px" class="hierarchy">Original Element Value</td></tr>
    <tr style="border: 0px #F0F0F0 solid; padding:0px; vertical-align: top; background-color: #F7F7F7"><td style="vertical-align: top; text-align : var(--ig-left,left); background-color: #F7F7F7; border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px; white-space: nowrap; background-image: url(tbl_bck10.png)" class="hierarchy"><img src="tbl_spacer.png" alt="." style="background-color: inherit" class="hierarchy"/><img src="tbl_vjoin.png" alt="." style="background-color: inherit" class="hierarchy"/><img src="icon_extension_simple.png" alt="." style="background-color: #F7F7F7; background-color: inherit" title="Simple Extension" class="hierarchy"/> <span style="text-decoration:line-through">extension</span><a name="Extension.extension"> </a></td><td style="vertical-align: top; text-align : var(--ig-left,left); background-color: #F7F7F7; border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px" class="hierarchy"/><td style="vertical-align: top; text-align : var(--ig-left,left); background-color: #F7F7F7; border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px" class="hierarchy"><span style="text-decoration:line-through"/><span style="text-decoration:line-through">0</span><span style="text-decoration:line-through">..</span><span style="text-decoration:line-through">0</span></td><td style="vertical-align: top; text-align : var(--ig-left,left); background-color: #F7F7F7; border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px" class="hierarchy"/><td style="vertical-align: top; text-align : var(--ig-left,left); background-color: #F7F7F7; border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px" class="hierarchy"/></tr>
    <tr style="border: 0px #F0F0F0 solid; padding:0px; vertical-align: top; background-color: white"><td style="vertical-align: top; text-align : var(--ig-left,left); background-color: white; border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px; white-space: nowrap; background-image: url(tbl_bck10.png)" class="hierarchy"><img src="tbl_spacer.png" alt="." style="background-color: inherit" class="hierarchy"/><img src="tbl_vjoin.png" alt="." style="background-color: inherit" class="hierarchy"/><img src="icon_element.gif" alt="." style="background-color: white; background-color: inherit" title="Element" class="hierarchy"/> <a href="StructureDefinition-link-original-element-value-extension-definitions.html#Extension.url">url</a><a name="Extension.url"> </a></td><td style="vertical-align: top; text-align : var(--ig-left,left); background-color: white; border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px" class="hierarchy"/><td style="vertical-align: top; text-align : var(--ig-left,left); background-color: white; border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px" class="hierarchy"><span style="opacity: 0.5">1</span><span style="opacity: 0.5">..</span><span style="opacity: 0.5">1</span></td><td style="vertical-align: top; text-align : var(--ig-left,left); background-color: white; border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px" class="hierarchy"><a style="opacity: 0.5; opacity: 0.5" href="http://hl7.org/fhir/R4/datatypes.html#uri">uri</a></td><td style="vertical-align: top; text-align : var(--ig-left,left); background-color: white; border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px" class="hierarchy"><span style="color: darkgreen">&quot;http://www.cdc.gov/nhsn/fhirportal/dqm/ig/StructureDefinition/link-original-element-value-extension&quot;</span></td></tr>
    <tr style="border: 0px #F0F0F0 solid; padding:0px; vertical-align: top; background-color: #F7F7F7"><td style="vertical-align: top; text-align : var(--ig-left,left); background-color: #F7F7F7; border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px; white-space: nowrap; background-image: url(tbl_bck00.png)" class="hierarchy"><img src="tbl_spacer.png" alt="." style="background-color: inherit" class="hierarchy"/><img src="tbl_vjoin_end.png" alt="." style="background-color: inherit" class="hierarchy"/><img src="icon_element.gif" alt="." style="background-color: #F7F7F7; background-color: inherit" title="Element" class="hierarchy"/> <a href="StructureDefinition-link-original-element-value-extension-definitions.html#Extension.value[x]">value[x]</a><a name="Extension.value_x_"> </a></td><td style="vertical-align: top; text-align : var(--ig-left,left); background-color: #F7F7F7; border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px" class="hierarchy"/><td style="vertical-align: top; text-align : var(--ig-left,left); background-color: #F7F7F7; border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px" class="hierarchy">1..<span style="opacity: 0.5">1</span></td><td style="vertical-align: top; text-align : var(--ig-left,left); background-color: #F7F7F7; border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px" class="hierarchy"><a style="opacity: 0.5; opacity: 0.5" href="http://hl7.org/fhir/R4/datatypes.html#base64Binary">base64Binary</a><span style="opacity: 0.5">, </span><a style="opacity: 0.5; opacity: 0.5" href="http://hl7.org/fhir/R4/datatypes.html#boolean">boolean</a><span style="opacity: 0.5">, </span><a href="http://hl7.org/fhir/R4/references.html">canonical</a>()<span style="opacity: 0.5">, </span><a style="opacity: 0.5; opacity: 0.5" href="http://hl7.org/fhir/R4/datatypes.html#code">code</a><span style="opacity: 0.5">, </span><a style="opacity: 0.5; opacity: 0.5" href="http://hl7.org/fhir/R4/datatypes.html#date">date</a><span style="opacity: 0.5">, </span><a style="opacity: 0.5; opacity: 0.5" href="http://hl7.org/fhir/R4/datatypes.html#dateTime">dateTime</a><span style="opacity: 0.5">, </span><a style="opacity: 0.5; opacity: 0.5" href="http://hl7.org/fhir/R4/datatypes.html#decimal">decimal</a><span style="opacity: 0.5">, </span><a style="opacity: 0.5; opacity: 0.5" href="http://hl7.org/fhir/R4/datatypes.html#id">id</a><span style="opacity: 0.5">, </span><a style="opacity: 0.5; opacity: 0.5" href="http://hl7.org/fhir/R4/datatypes.html#instant">instant</a><span style="opacity: 0.5">, </span><a style="opacity: 0.5; opacity: 0.5" href="http://hl7.org/fhir/R4/datatypes.html#integer">integer</a><span style="opacity: 0.5">, </span><a style="opacity: 0.5; opacity: 0.5" href="http://hl7.org/fhir/R4/datatypes.html#markdown">markdown</a><span style="opacity: 0.5">, </span><a style="opacity: 0.5; opacity: 0.5" href="http://hl7.org/fhir/R4/datatypes.html#oid">oid</a><span style="opacity: 0.5">, </span><a style="opacity: 0.5; opacity: 0.5" href="http://hl7.org/fhir/R4/datatypes.html#positiveInt">positiveInt</a><span style="opacity: 0.5">, </span><a style="opacity: 0.5; opacity: 0.5" href="http://hl7.org/fhir/R4/datatypes.html#string">string</a><span style="opacity: 0.5">, </span><a style="opacity: 0.5; opacity: 0.5" href="http://hl7.org/fhir/R4/datatypes.html#time">time</a><span style="opacity: 0.5">, </span><a style="opacity: 0.5; opacity: 0.5" href="http://hl7.org/fhir/R4/datatypes.html#unsignedInt">unsignedInt</a><span style="opacity: 0.5">, </span><a style="opacity: 0.5; opacity: 0.5" href="http://hl7.org/fhir/R4/datatypes.html#uri">uri</a><span style="opacity: 0.5">, </span><a style="opacity: 0.5; opacity: 0.5" href="http://hl7.org/fhir/R4/datatypes.html#url">url</a><span style="opacity: 0.5">, </span><a style="opacity: 0.5; opacity: 0.5" href="http://hl7.org/fhir/R4/datatypes.html#uuid">uuid</a><span style="opacity: 0.5">, </span><a style="opacity: 0.5; opacity: 0.5" href="http://hl7.org/fhir/R4/datatypes.html#Address">Address</a><span style="opacity: 0.5">, </span><a style="opacity: 0.5; opacity: 0.5" href="http://hl7.org/fhir/R4/datatypes.html#Age">Age</a><span style="opacity: 0.5">, </span><a style="opacity: 0.5; opacity: 0.5" href="http://hl7.org/fhir/R4/datatypes.html#Annotation">Annotation</a><span style="opacity: 0.5">, </span><a style="opacity: 0.5; opacity: 0.5" href="http://hl7.org/fhir/R4/datatypes.html#Attachment">Attachment</a><span style="opacity: 0.5">, </span><a style="opacity: 0.5; opacity: 0.5" href="http://hl7.org/fhir/R4/datatypes.html#CodeableConcept">CodeableConcept</a><span style="opacity: 0.5">, </span><a style="opacity: 0.5; opacity: 0.5" href="http://hl7.org/fhir/R4/datatypes.html#Coding">Coding</a><span style="opacity: 0.5">, </span><a style="opacity: 0.5; opacity: 0.5" href="http://hl7.org/fhir/R4/datatypes.html#ContactPoint">ContactPoint</a><span style="opacity: 0.5">, </span><a style="opacity: 0.5; opacity: 0.5" href="http://hl7.org/fhir/R4/datatypes.html#Count">Count</a><span style="opacity: 0.5">, </span><a style="opacity: 0.5; opacity: 0.5" href="http://hl7.org/fhir/R4/datatypes.html#Distance">Distance</a><span style="opacity: 0.5">, </span><a style="opacity: 0.5; opacity: 0.5" href="http://hl7.org/fhir/R4/datatypes.html#Duration">Duration</a><span style="opacity: 0.5">, </span><a style="opacity: 0.5; opacity: 0.5" href="http://hl7.org/fhir/R4/datatypes.html#HumanName">HumanName</a><span style="opacity: 0.5">, </span><a style="opacity: 0.5; opacity: 0.5" href="http://hl7.org/fhir/R4/datatypes.html#Identifier">Identifier</a><span style="opacity: 0.5">, </span><a style="opacity: 0.5; opacity: 0.5" href="http://hl7.org/fhir/R4/datatypes.html#Money">Money</a><span style="opacity: 0.5">, </span><a style="opacity: 0.5; opacity: 0.5" href="http://hl7.org/fhir/R4/datatypes.html#Period">Period</a><span style="opacity: 0.5">, </span><a style="opacity: 0.5; opacity: 0.5" href="http://hl7.org/fhir/R4/datatypes.html#Quantity">Quantity</a><span style="opacity: 0.5">, </span><a style="opacity: 0.5; opacity: 0.5" href="http://hl7.org/fhir/R4/datatypes.html#Range">Range</a><span style="opacity: 0.5">, </span><a style="opacity: 0.5; opacity: 0.5" href="http://hl7.org/fhir/R4/datatypes.html#Ratio">Ratio</a><span style="opacity: 0.5">, </span><a href="http://hl7.org/fhir/R4/references.html">Reference</a>()<span style="opacity: 0.5">, </span><a style="opacity: 0.5; opacity: 0.5" href="http://hl7.org/fhir/R4/datatypes.html#SampledData">SampledData</a><span style="opacity: 0.5">, </span><a style="opacity: 0.5; opacity: 0.5" href="http://hl7.org/fhir/R4/datatypes.html#Signature">Signature</a><span style="opacity: 0.5">, </span><a style="opacity: 0.5; opacity: 0.5" href="http://hl7.org/fhir/R4/datatypes.html#Timing">Timing</a><span style="opacity: 0.5">, </span><a style="opacity: 0.5; opacity: 0.5" href="http://hl7.org/fhir/R4/metadatatypes.html#ContactDetail">ContactDetail</a><span style="opacity: 0.5">, </span><a style="opacity: 0.5; opacity: 0.5" href="http://hl7.org/fhir/R4/metadatatypes.html#Contributor">Contributor</a><span style="opacity: 0.5">, </span><a style="opacity: 0.5; opacity: 0.5" href="http://hl7.org/fhir/R4/metadatatypes.html#DataRequirement">DataRequirement</a><span style="opacity: 0.5">, </span><a style="opacity: 0.5; opacity: 0.5" href="http://hl7.org/fhir/R4/datatypes.html#Expression">Expression</a><span style="opacity: 0.5">, </span><a style="opacity: 0.5; opacity: 0.5" href="http://hl7.org/fhir/R4/metadatatypes.html#ParameterDefinition">ParameterDefinition</a><span style="opacity: 0.5">, </span><a style="opacity: 0.5; opacity: 0.5" href="http://hl7.org/fhir/R4/metadatatypes.html#RelatedArtifact">RelatedArtifact</a><span style="opacity: 0.5">, </span><a style="opacity: 0.5; opacity: 0.5" href="http://hl7.org/fhir/R4/metadatatypes.html#TriggerDefinition">TriggerDefinition</a><span style="opacity: 0.5">, </span><a style="opacity: 0.5; opacity: 0.5" href="http://hl7.org/fhir/R4/metadatatypes.html#UsageContext">UsageContext</a><span style="opacity: 0.5">, </span><a style="opacity: 0.5; opacity: 0.5" href="http://hl7.org/fhir/R4/datatypes.html#Dosage">Dosage</a><span style="opacity: 0.5">, </span><a style="opacity: 0.5; opacity: 0.5" href="http://hl7.org/fhir/R4/datatypes.html#Meta">Meta</a></td><td style="vertical-align: top; text-align : var(--ig-left,left); background-color: #F7F7F7; border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px" class="hierarchy"><span style="opacity: 0.5">Value of extension</span></td></tr>
    <tr><td colspan="5" class="hierarchy"><br/><a href="https://build.fhir.org/ig/FHIR/ig-guidance/readingIgs.html#table-views" title="Legend for this format"><img src="data:image/png;base64, " alt="doco" 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="1">
          <extension
                     url="http://hl7.org/fhir/StructureDefinition/structuredefinition-conformance-derivedFrom">
            <valueCanonical
                            value="http://www.cdc.gov/nhsn/fhirportal/dqm/ig/ImplementationGuide/gov.cdc.nhsn.measures"/>
          </extension>
        </valueInteger>
      </extension>
      <extension
                 url="http://hl7.org/fhir/StructureDefinition/structuredefinition-standards-status">
        <valueCode value="trial-use">
          <extension
                     url="http://hl7.org/fhir/StructureDefinition/structuredefinition-conformance-derivedFrom">
            <valueCanonical
                            value="http://www.cdc.gov/nhsn/fhirportal/dqm/ig/ImplementationGuide/gov.cdc.nhsn.measures"/>
          </extension>
        </valueCode>
      </extension>
      <url
           value="http://www.cdc.gov/nhsn/fhirportal/dqm/ig/StructureDefinition/link-original-element-value-extension"/>
      <version value="1.0.0"/>
      <name value="OriginalElementValue"/>
      <title value="Original Element Value"/>
      <status value="active"/>
      <date value="2023-04-27T12:06:35-07:00"/>
      <publisher value="CDC National Healthcare Safety Network (NHSN)"/>
      <contact>
        <name value="CDC National Healthcare Safety Network (NHSN)"/>
        <telecom>
          <system value="url"/>
          <value value="http://www.cdc.gov/nhsn"/>
        </telecom>
        <telecom>
          <system value="email"/>
          <value value="nhsn@cdc.gov"/>
        </telecom>
      </contact>
      <description
                   value="This extension stores the original value of an element from a source that was modified by a processing system (e.g., NHSNLink) to make it usable for NHSN. Modification may include changing logically invalid data, changing data that does not match specification requirements (this modification is used sparingly, for specific instances only), or normalizing data."/>
      <jurisdiction>
        <coding>
          <system value="urn:iso:std:iso:3166"/>
          <code value="US"/>
        </coding>
      </jurisdiction>
      <fhirVersion value="4.0.1"/>
      <mapping>
        <identity value="rim"/>
        <uri value="http://hl7.org/v3"/>
        <name value="RIM Mapping"/>
      </mapping>
      <kind value="complex-type"/>
      <abstract value="false"/>
      <context>
        <type value="element"/>
        <expression value="Element"/>
      </context>
      <type value="Extension"/>
      <baseDefinition value="http://hl7.org/fhir/StructureDefinition/Extension"/>
      <derivation value="constraint"/>
      <snapshot>
        <extension
                   url="http://hl7.org/fhir/tools/StructureDefinition/snapshot-base-version">
          <valueString value="4.0.1"/>
        </extension>
        <element id="Extension">
          <path value="Extension"/>
          <short value="Original Element Value"/>
          <definition
                      value="This extension stores the original value of an element from a source that was modified by a processing system (e.g., NHSNLink) to make it usable for NHSN. Modification may include changing logically invalid data, changing data that does not match specification requirements (this modification is used sparingly, for specific instances only), or normalizing data."/>
          <min value="0"/>
          <max value="*"/>
          <base>
            <path value="Extension"/>
            <min value="0"/>
            <max value="*"/>
          </base>
          <condition value="ele-1"/>
          <constraint>
            <key value="ele-1"/>
            <severity value="error"/>
            <human value="All FHIR elements must have a @value or children"/>
            <expression
                        value="hasValue() or (children().count() &gt; id.count())"/>
            <xpath value="@value|f:*|h:div"/>
            <source value="http://hl7.org/fhir/StructureDefinition/Element"/>
          </constraint>
          <constraint>
            <key value="ext-1"/>
            <severity value="error"/>
            <human value="Must have either extensions or value[x], not both"/>
            <expression value="extension.exists() != value.exists()"/>
            <xpath
                   value="exists(f:extension)!=exists(f:*[starts-with(local-name(.), 'value')])"/>
            <source value="http://hl7.org/fhir/StructureDefinition/Extension"/>
          </constraint>
          <isModifier value="false"/>
        </element>
        <element id="Extension.id">
          <path value="Extension.id"/>
          <representation value="xmlAttr"/>
          <short value="Unique id for inter-element referencing"/>
          <definition
                      value="Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces."/>
          <min value="0"/>
          <max value="1"/>
          <base>
            <path value="Element.id"/>
            <min value="0"/>
            <max value="1"/>
          </base>
          <type>
            <extension
                       url="http://hl7.org/fhir/StructureDefinition/structuredefinition-fhir-type">
              <valueUrl value="string"/>
            </extension>
            <code value="http://hl7.org/fhirpath/System.String"/>
          </type>
          <isModifier value="false"/>
          <isSummary value="false"/>
          <mapping>
            <identity value="rim"/>
            <map value="n/a"/>
          </mapping>
        </element>
        <element id="Extension.extension">
          <path value="Extension.extension"/>
          <slicing>
            <discriminator>
              <type value="value"/>
              <path value="url"/>
            </discriminator>
            <description value="Extensions are always sliced by (at least) url"/>
            <rules value="open"/>
          </slicing>
          <short value="Extension"/>
          <definition value="An Extension"/>
          <min value="0"/>
          <max value="0"/>
          <base>
            <path value="Element.extension"/>
            <min value="0"/>
            <max value="*"/>
          </base>
          <type>
            <code value="Extension"/>
          </type>
          <constraint>
            <key value="ele-1"/>
            <severity value="error"/>
            <human value="All FHIR elements must have a @value or children"/>
            <expression
                        value="hasValue() or (children().count() &gt; id.count())"/>
            <xpath value="@value|f:*|h:div"/>
            <source value="http://hl7.org/fhir/StructureDefinition/Element"/>
          </constraint>
          <constraint>
            <key value="ext-1"/>
            <severity value="error"/>
            <human value="Must have either extensions or value[x], not both"/>
            <expression value="extension.exists() != value.exists()"/>
            <xpath
                   value="exists(f:extension)!=exists(f:*[starts-with(local-name(.), &quot;value&quot;)])"/>
            <source value="http://hl7.org/fhir/StructureDefinition/Extension"/>
          </constraint>
          <isModifier value="false"/>
          <isSummary value="false"/>
        </element>
        <element id="Extension.url">
          <path value="Extension.url"/>
          <representation value="xmlAttr"/>
          <short value="identifies the meaning of the extension"/>
          <definition
                      value="Source of the definition for the extension code - a logical name or a URL."/>
          <comment
                   value="The definition may point directly to a computable or human-readable definition of the extensibility codes, or it may be a logical URI as declared in some other specification. The definition SHALL be a URI for the Structure Definition defining the extension."/>
          <min value="1"/>
          <max value="1"/>
          <base>
            <path value="Extension.url"/>
            <min value="1"/>
            <max value="1"/>
          </base>
          <type>
            <extension
                       url="http://hl7.org/fhir/StructureDefinition/structuredefinition-fhir-type">
              <valueUrl value="uri"/>
            </extension>
            <code value="http://hl7.org/fhirpath/System.String"/>
          </type>
          <fixedUri
                    value="http://www.cdc.gov/nhsn/fhirportal/dqm/ig/StructureDefinition/link-original-element-value-extension"/>
          <isModifier value="false"/>
          <isSummary value="false"/>
          <mapping>
            <identity value="rim"/>
            <map value="N/A"/>
          </mapping>
        </element>
        <element id="Extension.value[x]">
          <path value="Extension.value[x]"/>
          <short value="Value of extension"/>
          <definition
                      value="Value of extension - must be one of a constrained set of the data types (see [Extensibility](http://hl7.org/fhir/R4/extensibility.html) for a list)."/>
          <min value="1"/>
          <max value="1"/>
          <base>
            <path value="Extension.value[x]"/>
            <min value="0"/>
            <max value="1"/>
          </base>
          <type>
            <code value="base64Binary"/>
          </type>
          <type>
            <code value="boolean"/>
          </type>
          <type>
            <code value="canonical"/>
          </type>
          <type>
            <code value="code"/>
          </type>
          <type>
            <code value="date"/>
          </type>
          <type>
            <code value="dateTime"/>
          </type>
          <type>
            <code value="decimal"/>
          </type>
          <type>
            <code value="id"/>
          </type>
          <type>
            <code value="instant"/>
          </type>
          <type>
            <code value="integer"/>
          </type>
          <type>
            <code value="markdown"/>
          </type>
          <type>
            <code value="oid"/>
          </type>
          <type>
            <code value="positiveInt"/>
          </type>
          <type>
            <code value="string"/>
          </type>
          <type>
            <code value="time"/>
          </type>
          <type>
            <code value="unsignedInt"/>
          </type>
          <type>
            <code value="uri"/>
          </type>
          <type>
            <code value="url"/>
          </type>
          <type>
            <code value="uuid"/>
          </type>
          <type>
            <code value="Address"/>
          </type>
          <type>
            <code value="Age"/>
          </type>
          <type>
            <code value="Annotation"/>
          </type>
          <type>
            <code value="Attachment"/>
          </type>
          <type>
            <code value="CodeableConcept"/>
          </type>
          <type>
            <code value="Coding"/>
          </type>
          <type>
            <code value="ContactPoint"/>
          </type>
          <type>
            <code value="Count"/>
          </type>
          <type>
            <code value="Distance"/>
          </type>
          <type>
            <code value="Duration"/>
          </type>
          <type>
            <code value="HumanName"/>
          </type>
          <type>
            <code value="Identifier"/>
          </type>
          <type>
            <code value="Money"/>
          </type>
          <type>
            <code value="Period"/>
          </type>
          <type>
            <code value="Quantity"/>
          </type>
          <type>
            <code value="Range"/>
          </type>
          <type>
            <code value="Ratio"/>
          </type>
          <type>
            <code value="Reference"/>
          </type>
          <type>
            <code value="SampledData"/>
          </type>
          <type>
            <code value="Signature"/>
          </type>
          <type>
            <code value="Timing"/>
          </type>
          <type>
            <code value="ContactDetail"/>
          </type>
          <type>
            <code value="Contributor"/>
          </type>
          <type>
            <code value="DataRequirement"/>
          </type>
          <type>
            <code value="Expression"/>
          </type>
          <type>
            <code value="ParameterDefinition"/>
          </type>
          <type>
            <code value="RelatedArtifact"/>
          </type>
          <type>
            <code value="TriggerDefinition"/>
          </type>
          <type>
            <code value="UsageContext"/>
          </type>
          <type>
            <code value="Dosage"/>
          </type>
          <type>
            <code value="Meta"/>
          </type>
          <constraint>
            <key value="ele-1"/>
            <severity value="error"/>
            <human value="All FHIR elements must have a @value or children"/>
            <expression
                        value="hasValue() or (children().count() &gt; id.count())"/>
            <xpath value="@value|f:*|h:div"/>
            <source value="http://hl7.org/fhir/StructureDefinition/Element"/>
          </constraint>
          <isModifier value="false"/>
          <isSummary value="false"/>
          <mapping>
            <identity value="rim"/>
            <map value="N/A"/>
          </mapping>
        </element>
      </snapshot>
      <differential>
        <element id="Extension">
          <path value="Extension"/>
          <short value="Original Element Value"/>
          <definition
                      value="This extension stores the original value of an element from a source that was modified by a processing system (e.g., NHSNLink) to make it usable for NHSN. Modification may include changing logically invalid data, changing data that does not match specification requirements (this modification is used sparingly, for specific instances only), or normalizing data."/>
        </element>
        <element id="Extension.extension">
          <path value="Extension.extension"/>
          <max value="0"/>
        </element>
        <element id="Extension.url">
          <path value="Extension.url"/>
          <fixedUri
                    value="http://www.cdc.gov/nhsn/fhirportal/dqm/ig/StructureDefinition/link-original-element-value-extension"/>
        </element>
        <element id="Extension.value[x]">
          <path value="Extension.value[x]"/>
          <min value="1"/>
        </element>
      </differential>
    </StructureDefinition>