observation-example.xml

<?xml version="1.0" encoding="UTF-8"?><Observation xmlns="http://hl7.org/fhir">
	<id value="example"/>
	<!--    the mandatory quality flags:    -->
	<text><status value="generated"/><div xmlns="http://www.w3.org/1999/xhtml"><p><b>Generated Narrative with Details</b></p><p><b>id</b>: example</p><p><b>status</b>: final</p><p><b>category</b>: Vital Signs <span>(Details : {http://terminology.hl7.org/CodeSystem/observation-category code &#39;vital-signs&#39; = &#39;Vital Signs&#39;, given as &#39;Vital Signs&#39;})</span></p><p><b>code</b>: Body Weight <span>(Details : {LOINC code &#39;29463-7&#39; = &#39;Body weight&#39;, given as &#39;Body Weight&#39;}; {LOINC code &#39;3141-9&#39; = &#39;Body weight Measured&#39;, given as &#39;Body weight Measured&#39;}; {SNOMED CT code &#39;27113001&#39; = &#39;Body weight&#39;, given as &#39;Body weight&#39;}; {http://acme.org/devices/clinical-codes code &#39;body-weight&#39; = &#39;body-weight&#39;, given as &#39;Body Weight&#39;})</span></p><p><b>subject</b>: <a>Patient/example</a></p><p><b>encounter</b>: <a>Encounter/example</a></p><p><b>effective</b>: 28/03/2016</p><p><b>value</b>: 185 lbs<span> (Details: UCUM code [lb_av] = &#39;lb_av&#39;)</span></p></div></text><status value="final"/>
	<extension url="http://example.com/fhir/StructureDefinition/patient-age">
		<valueAge>
			<value value="41" />
			<system value="http://unitsofmeasure.org" />
			<code value="a" />
		</valueAge>
	</extension>
	<!--   category code is A code that classifies the general type of observation being made. This is used for searching, sorting and display purposes.  -->
	<category>
		<coding>
			<system value="http://terminology.hl7.org/CodeSystem/observation-category"/>
			<code value="vital-signs"/>
			<display value="Vital Signs"/>
		</coding>
	</category>
	<!--   
    Observations are often coded in multiple code systems.
      - LOINC provides codes of varying granularity (though not usefully more specific in this particular case) and more generic LOINCs  can be mapped to more specific codes as shown here
      - 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
     -->
	<code>
		<!--    LOINC - always recommended to have a LOINC code    -->
		<coding>
			<system value="http://loinc.org"/>
			<code value="29463-7"/> <!--  more generic methodless LOINC  -->
			<display value="Body Weight"/>
		</coding>
		<coding>
			<system value="http://loinc.org"/>
			<code value="3141-9"/><!--  translation is more specific method = measured LOINC  -->
			<display value="Body weight Measured"/>
		</coding>
		<!--    SNOMED CT Codes - becoming more common    -->
		<coding>
			<system value="http://snomed.info/sct"/>
			<code value="27113001"/>
			<display value="Body weight"/>
		</coding>
		<!--    Also, a local code specific to the source system    -->
		<coding>
			<system value="http://acme.org/devices/clinical-codes"/>
			<code value="body-weight"/>
			<display value="Body Weight"/>
		</coding>
	</code>
	<subject>
		<reference value="Patient/example"/>
	</subject>
	<encounter>
		<reference value="Encounter/example"/>
	</encounter>
	<effectiveDateTime value="2016-03-28"/>
	<!--    In FHIR, units may be represented twice. Once in the
    agreed human representation, and once in a coded form.
    Both is best, since it's not always possible to infer
    one from the other in code.

    When a computable unit is provided, UCUM (http://unitsofmeasure.org)
    is always preferred, but it doesn't provide notional units (such as
    "tablet"), etc. For these, something else is required (e.g. SNOMED CT)
      -->
	<valueQuantity>
		<value value="185"/>
		<unit value="lbs"/>
		<system value="http://unitsofmeasure.org"/>
		<code value="[lb_av]"/>
	</valueQuantity>
</Observation>