Simple Weight Example (id = "example")

<?xml version="1.0" encoding="UTF-8"?>

<!--   
 This is an example of a simple weight measurement.
   --><Observation xmlns="http://hl7.org/fhir">
  <id value="example"/> 
  <!--    the mandatory quality flags:    -->
  <status value="final"/> 
  <!--   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> 
  <category> 
    <coding> 
      <system value="http://loinc.org"/> 
      <code value="29463-7"/> 
      <!--   methodless LOINC "interoperability category" code   -->
      <display value="Body Weight"/> 
    </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="3141-9"/> 
      <!--   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>