<?xml version="1.0" encoding="UTF-8"?><Observation xmlns="http://hl7.org/fhir">
  <id value="blood-pressure-cancel"/>
  <meta>
    <profile value="http://hl7.org/fhir/StructureDefinition/vitalsigns"/>
  
    <security>
      <system value="http://terminology.hl7.org/CodeSystem/v3-ActReason"/>
      <code value="HTEST"/>
      <display value="test health data"/>
    </security>
  </meta>
  <!-- EH  Narrative created by build
	<text>
		<status value="generated"/>
		<div xmlns="http://www.w3.org/1999/xhtml">Sept 17, 2012: Systolic Blood pressure 107/60 mmHg (low)</div>
	</text> -->
  <identifier>
    <system value="urn:ietf:rfc:3986"/>
    <value value="urn:uuid:187e0c12-8dd2-67e2-99b2-bf273c878281"/>
  </identifier>
  <status value="cancelled"/>
  <category>
    <coding>
      <system value="http://terminology.hl7.org/CodeSystem/observation-category"/>
      <code value="vital-signs"/>
      <display value="Vital Signs"/>
    </coding>
  </category>
  <code>
    <!-- replaced by 85354-9
		<coding>
			<system value="http://loinc.org"/>
			<code value="85354-9"/>
			<display value="Blood pressure systolic &amp; diastolic"/>
		</coding> -->
    <coding>
      <system value="http://loinc.org"/>
      <code value="85354-9"/>
      <display value="Blood pressure panel with all children optional"/>
    </coding>
    <text value="Blood pressure systolic &amp; diastolic"/>
  </code>
  <subject>
    <reference value="Patient/example"/>
  </subject>
  <effectiveDateTime value="2012-09-17"/>
  <performer>
    <reference value="Practitioner/example"/>
  </performer>
  <!-- an interpretation offered to the combination observation
        generally, it would only be appropriate to offer an interpretation
        of an observation that has no value if it has "COMP" (component)
        observations -->
  <interpretation>
    <coding>
      <system value="http://terminology.hl7.org/CodeSystem/v3-ObservationInterpretation"/>
      <code value="L"/>
      <display value="low"/>
    </coding>
    <text value="Below low normal"/>
  </interpretation>
  <note>
    <text value="In this example, the blood pressure measurements are not available due to cancellation of the order.  Data absent reason is present for each component"/>
  </note>
  <!-- for an observation with components, these cannot disagree with the flags on the components -->
  <bodySite>
    <coding>
      <system value="http://snomed.info/sct"/>
      <code value="368209003"/>
      <display value="Right arm"/>
    </coding>
  </bodySite>
  <component>
    <!-- Observations are often coded in multiple code systems.
           - LOINC provides a very specific code (though not usefully more specific in this particular case)
           - snomed provides a clinically relevant code that is usually less granular than LOINC
           - the source system provides its own code, which may be less or more granular than LOINC
	 this instance shows the concept. The other codes only have a LOINC code -->
    <!-- that shows the concept. The next two names only have a LOINC code -->
    <code>
      <!-- LOINC - always recommended to have a LOINC code -->
      <coding>
        <system value="http://loinc.org"/>
        <code value="8480-6"/>
        <display value="Systolic blood pressure"/>
      </coding>
      <!-- SNOMED CT Codes - becoming more common -->
      <coding>
        <system value="http://snomed.info/sct"/>
        <code value="271649006"/>
        <display value="Systolic blood pressure"/>
      </coding>
      <!-- Also, a local code specific to the source system -->
      <coding>
        <system value="http://acme.org/devices/clinical-codes"/>
        <code value="bp-s"/>
        <display value="Systolic Blood pressure"/>
      </coding>
    </code>
    <!-- no value due to some error
    <valueQuantity>
      <value value="107"/>
      <unit value="mm[Hg]"/>
    </valueQuantity> -->
    <dataAbsentReason>
      <coding>
        <system value="http://terminology.hl7.org/CodeSystem/data-absent-reason"/>
        <code value="not-asked"/>
        <display value="Not Asked"/>
      </coding>
    </dataAbsentReason>
  </component>
  <component>
    <code>
      <coding>
        <system value="http://loinc.org"/>
        <code value="8462-4"/>
        <display value="Diastolic blood pressure"/>
      </coding>
    </code>
    <!-- no value due to some error
    <valueQuantity>
      <value value="60"/>
      <unit value="mm[Hg]"/>
    </valueQuantity> -->
    <dataAbsentReason>
      <coding>
        <system value="http://terminology.hl7.org/CodeSystem/data-absent-reason"/>
        <code value="not-asked"/>
        <display value="Not Asked"/>
      </coding>
    </dataAbsentReason>
  </component>
</Observation>