<StructureDefinition xmlns="http://hl7.org/fhir">
  <meta>
    <lastUpdated value="2022-09-08T16:14:11.4322497+00:00" />
  </meta>
  <url value="http://telus.com/fhir/patientChart/StructureDefinition/profile-observation-drug-use-frequency" />
  <name value="ObservationDrugUseFrequency" />
  <status value="draft" />
  <date value="2022-06-30T18:37:43.6867192+00:00" />
  <description value="This aligns closely with the TELUS DW profile" />
  <fhirVersion value="4.0.1" />
  <mapping>
    <identity value="workflow" />
    <uri value="http://hl7.org/fhir/workflow" />
    <name value="Workflow Pattern" />
  </mapping>
  <mapping>
    <identity value="sct-concept" />
    <uri value="http://snomed.info/conceptdomain" />
    <name value="SNOMED CT Concept Domain Binding" />
  </mapping>
  <mapping>
    <identity value="v2" />
    <uri value="http://hl7.org/v2" />
    <name value="HL7 v2 Mapping" />
  </mapping>
  <mapping>
    <identity value="rim" />
    <uri value="http://hl7.org/v3" />
    <name value="RIM Mapping" />
  </mapping>
  <mapping>
    <identity value="w5" />
    <uri value="http://hl7.org/fhir/fivews" />
    <name value="FiveWs Pattern Mapping" />
  </mapping>
  <mapping>
    <identity value="sct-attr" />
    <uri value="http://snomed.org/attributebinding" />
    <name value="SNOMED CT Attribute Binding" />
  </mapping>
  <kind value="resource" />
  <abstract value="false" />
  <type value="Observation" />
  <baseDefinition value="http://hl7.org/fhir/StructureDefinition/Observation" />
  <derivation value="constraint" />
  <differential>
    <element id="Observation.id">
      <path value="Observation.id" />
      <mustSupport value="true" />
    </element>
    <element id="Observation.meta">
      <path value="Observation.meta" />
      <mustSupport value="true" />
    </element>
    <element id="Observation.meta.lastUpdated">
      <path value="Observation.meta.lastUpdated" />
      <min value="1" />
      <mustSupport value="true" />
    </element>
    <element id="Observation.meta.source">
      <path value="Observation.meta.source" />
      <mustSupport value="true" />
    </element>
    <element id="Observation.meta.profile">
      <path value="Observation.meta.profile" />
      <comment value="Usage:  When the profile is specified in the message instance, it may be validated against the profile.&#xD;&#xA;It is up to the server and/or other infrastructure of policy to determine whether/how these claims are verified and/or updated over time.  The list of profile URLs is a set." />
      <mustSupport value="true" />
    </element>
    <element id="Observation.text">
      <path value="Observation.text" />
      <mustSupport value="true" />
    </element>
    <element id="Observation.status">
      <path value="Observation.status" />
      <comment value="Usage Note - Historical load do not send the deleted entries. For delta send all updated resource including deleted PSS --&gt;FHIR &#xD;&#xA;Needs Review, unfinished --&gt; Final &#xD;&#xA;Updated --&gt; amended - only if delta is being send &#xD;&#xA;deleted --&gt; entered-in-error - only if delta is being send TBD question for Lloyd&#xD;&#xA;&#xD;&#xA;MA --&gt; FHIR &#xD;&#xA;Active --&gt; Final &#xD;&#xA;deleted --&gt; entered-in-error - only if delta is being send&#xD;&#xA;This element is labeled as a modifier because the status contains codes that mark the resource as not currently valid.&#xD;&#xA;&#xD;&#xA;Conformance Rule - PSS status for active risk factors the status should be final. For updated risk factor the status should be updated to amended" />
      <mustSupport value="true" />
    </element>
    <element id="Observation.code">
      <path value="Observation.code" />
      <mustSupport value="true" />
    </element>
    <element id="Observation.code.coding">
      <path value="Observation.code.coding" />
      <mustSupport value="true" />
    </element>
    <element id="Observation.code.coding.system">
      <path value="Observation.code.coding.system" />
      <mustSupport value="true" />
    </element>
    <element id="Observation.code.coding.code">
      <path value="Observation.code.coding.code" />
      <mustSupport value="true" />
    </element>
    <element id="Observation.code.text">
      <path value="Observation.code.text" />
      <mustSupport value="true" />
    </element>
    <element id="Observation.subject">
      <path value="Observation.subject" />
      <mustSupport value="true" />
    </element>
    <element id="Observation.effective[x]">
      <path value="Observation.effective[x]" />
      <mustSupport value="true" />
    </element>
    <element id="Observation.value[x]">
      <path value="Observation.value[x]" />
      <comment value="Usage note - use valueCodeableConcept&#xD;&#xA;&#xD;&#xA;An observation may have; 1)  a single value here, 2)  both a value and a set of related or component values,  or 3)  only a set of related or component values. If a value is present, the datatype for this element should be determined by Observation.code.  A CodeableConcept with just a text would be used instead of a string if the field was usually coded, or if the type associated with the Observation.code defines a coded value.  For additional guidance, see the [Notes section](observation.html#notes) below." />
      <mustSupport value="true" />
    </element>
    <element id="Observation.note">
      <path value="Observation.note" />
      <mustSupport value="true" />
    </element>
    <element id="Observation.bodySite">
      <path value="Observation.bodySite" />
      <max value="0" />
    </element>
    <element id="Observation.specimen">
      <path value="Observation.specimen" />
      <max value="0" />
    </element>
    <element id="Observation.device">
      <path value="Observation.device" />
      <max value="0" />
    </element>
    <element id="Observation.referenceRange">
      <path value="Observation.referenceRange" />
      <max value="0" />
    </element>
  </differential>
</StructureDefinition>