<?xml version=“1.0” encoding=“UTF-8”?> <Observation xmlns=“hl7.org/fhir”>

      <id value="map-sitting"/>

      <!--    To be used only when the body position in not precoordinated in the observation code.  -->
      <meta>
  <security>
    <system value="http://terminology.hl7.org/CodeSystem/v3-ActReason"/>
    <code value="HTEST"/>
    <display value="test health data"/>
  </security>
</meta>
<extension url="http://hl7.org/fhir/StructureDefinition/observation-bodyPosition">
              <valueCodeableConcept>
                      <coding>
                              <system value="http://snomed.info/sct"/>
                              <code value="33586001"/>
                              <display value="Sitting position (finding)"/>
                      </coding>
              </valueCodeableConcept>
      </extension>
              <!--    The qualitative change in the value relative to the previous measurement. Usually only recorded if the change is clinically significant.  -->
      <extension url="http://hl7.org/fhir/StructureDefinition/observation-delta">
              <valueCodeableConcept>
                      <coding>
                              <system value="http://snomed.info/sct"/>
                              <code value="1250004"/>
                              <display value="Decreased (qualifier value)"/>
                      </coding>
              </valueCodeableConcept>
      </extension>
      <status value="final"/>
      <category>
              <coding>
                      <system value="http://terminology.hl7.org/CodeSystem/observation-category"/>
                      <code value="laboratory"/>
                      <display value="Laboratory"/>
              </coding>
      </category>
      <code>
              <coding>
                      <system value="http://loinc.org"/>
                      <code value="8478-0"/>
                      <display value="Mean blood pressure"/>
              </coding>
      </code>
      <subject>
              <reference value="Patient/example"/>
      </subject>
      <encounter>
              <reference value="Encounter/example"/>
      </encounter>
      <effectivePeriod>
              <start value="2018-04-02T10:30:10+01:00"/>
              <end value="2018-04-05T10:30:10+01:00"/>
      </effectivePeriod>
      <issued value="2018-04-03T15:30:10+01:00"/>
      <valueQuantity>
              <value value="60"/>
              <unit value="mm Hg"/>
              <system value="http://unitsofmeasure.org"/>
              <code value="mm[Hg]"/>
      </valueQuantity>
      <interpretation>
              <coding>
                      <system value="http://terminology.hl7.org/CodeSystem/v2-0078"/>
                      <code value="L"/>
                      <display value="Low"/>
              </coding>
              <text value="Below low normal"/>
      </interpretation>

</Observation>