<StructureDefinition xmlns="http://hl7.org/fhir">
  <id value="iso21090-uncertaintyType" />
  <extension url="http://hl7.org/fhir/StructureDefinition/structuredefinition-wg">
    <valueCode value="fhir" />
  </extension>
  <extension url="http://hl7.org/fhir/StructureDefinition/structuredefinition-fmm">
    <valueInteger value="1" />
  </extension>
  <url value="http://hl7.org/fhir/StructureDefinition/iso21090-uncertaintyType" />
  <name value="uncertaintyType" />
  <status value="draft" />
  <date value="2012-06-24" />
  <publisher value="Health Level Seven International (Modeling and Methodology)" />
  <contact>
    <telecom>
      <system value="url" />
      <value value="http://www.hl7.org/Special/committees/mnm" />
    </telecom>
  </contact>
  <description value="A code specifying the type of probability distribution for the uncertainty." />
  <fhirVersion value="3.0.1" />
  <mapping>
    <identity value="rim" />
    <uri value="http://hl7.org/v3" />
    <name value="RIM Mapping" />
  </mapping>
  <kind value="complex-type" />
  <abstract value="false" />
  <contextType value="datatype" />
  <context value="Quantity" />
  <type value="Extension" />
  <baseDefinition value="http://hl7.org/fhir/StructureDefinition/Extension" />
  <derivation value="constraint" />
  <differential>
    <element id="Extension">
      <path value="Extension" />
      <short value="Probability Distribution Type for uncertainty" />
      <definition value="A code specifying the type of probability distribution for the uncertainty." />
      <comment value="This is only meaningful if there is also an uncertainty extension. If there is an uncertainty extension with no type, this means  that the probability distribution type is unknown. In that case, the uncertainty has the meaning of an informal guess." />
      <min value="0" />
      <max value="1" />
      <mapping>
        <identity value="rim" />
        <map value="PPD.distributionType" />
      </mapping>
    </element>
    <element id="Extension.extension">
      <path value="Extension.extension" />
      <max value="0" />
    </element>
    <element id="Extension.url">
      <path value="Extension.url" />
      <type>
        <code value="uri" />
      </type>
      <fixedUri value="http://hl7.org/fhir/StructureDefinition/iso21090-uncertaintyType" />
    </element>
    <element id="Extension.valueCode">
      <path value="Extension.valueCode" />
      <type>
        <code value="code" />
      </type>
      <binding>
        <extension url="http://hl7.org/fhir/StructureDefinition/elementdefinition-bindingName">
          <valueString value="ProbabilityDistributionType" />
        </extension>
        <strength value="required" />
        <description value="Codes specifying the type of probability distribution" />
        <valueSetReference>
          <reference value="http://hl7.org/fhir/ValueSet/probability-distribution-type" />
        </valueSetReference>
      </binding>
    </element>
  </differential>
</StructureDefinition>