<StructureDefinition xmlns="http://hl7.org/fhir">
  <id value="SmartAL-Observation-Frailty" />
  <url value="http://alticelabs.com/fhir/StructureDefinition/SmartAL-Observation-Frailty" />
  <name value="SmartALObservationFrailty" />
  <title value="SmartAL Observation - Frailty Physical Assessment" />
  <status value="active" />
  <description value="Panel observation for frailty physical assessment including grip strength&#xA;(left and right hand), 4-meter walk gait&#xA;speed test. Dominant hand is not sent to Glintt (internal to MHR).&#xA;This observation has no enrichment (no ObservationDefinition thresholds)." />
  <fhirVersion value="4.0.1" />
  <kind value="resource" />
  <abstract value="false" />
  <type value="Observation" />
  <baseDefinition value="http://alticelabs.com/fhir/StructureDefinition/SmartAL-Observation-Base" />
  <derivation value="constraint" />
  <differential>
    <element id="Observation.code.coding">
      <path value="Observation.code.coding" />
      <max value="1" />
    </element>
    <element id="Observation.code.coding.system">
      <path value="Observation.code.coding.system" />
      <min value="1" />
      <fixedUri value="http://alticelabs.com/fhir/loinc-custom" />
    </element>
    <element id="Observation.code.coding.code">
      <path value="Observation.code.coding.code" />
      <min value="1" />
      <fixedCode value="3000-G" />
    </element>
    <element id="Observation.code.coding.display">
      <path value="Observation.code.coding.display" />
      <patternString value="Frailty Physical Assessment" />
    </element>
    <element id="Observation.value[x]">
      <path value="Observation.value[x]" />
      <max value="0" />
    </element>
    <element id="Observation.component">
      <path value="Observation.component" />
      <slicing>
        <discriminator>
          <type value="value" />
          <path value="code.coding.code" />
        </discriminator>
        <rules value="open" />
      </slicing>
    </element>
    <element id="Observation.component:gripStrengthLeft">
      <path value="Observation.component" />
      <sliceName value="gripStrengthLeft" />
      <short value="Grip strength - left hand (kg)" />
      <min value="0" />
      <max value="1" />
      <mustSupport value="true" />
    </element>
    <element id="Observation.component:gripStrengthLeft.code.coding.system">
      <path value="Observation.component.code.coding.system" />
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    </element>
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      <path value="Observation.component.code.coding.code" />
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      <fixedCode value="83173-5" />
    </element>
    <element id="Observation.component:gripStrengthLeft.code.coding.display">
      <path value="Observation.component.code.coding.display" />
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      <path value="Observation.component.value[x]" />
      <type>
        <code value="Quantity" />
      </type>
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      <path value="Observation.component.value[x].system" />
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      <sliceName value="gripStrengthRight" />
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      <path value="Observation.component.code.coding.system" />
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      <fixedCode value="83174-3" />
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      <path value="Observation.component.code.coding.display" />
      <patternString value="Grip strength Hand - right Dynamometer" />
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      </type>
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    </element>
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      <fixedCode value="kg" />
    </element>
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      <path value="Observation.component" />
      <sliceName value="gaitSpeed4m" />
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    </element>
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      <path value="Observation.component.code.coding.display" />
      <patternString value="4-Meter Walk Gait Speed Test [NIH Toolbox]" />
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      <fixedCode value="s" />
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  </differential>
</StructureDefinition>