An example of an order for physical therapy with a ratio quantity (id = "physicaltherapy")

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

<ServiceRequest xmlns="http://hl7.org/fhir">
  <id value="physicaltherapy"/> 
  <!--   Example of ambulation service request  -->
  <identifier> 
    <value value="12345"/> 
  </identifier> 
  <status value="completed"/> 
  <intent value="order"/> 
  <code> 
    <concept> 
      <coding> 
        <system value="http://snomed.info/sct"/> 
        <code value="722138006"/> 
        <display value="Physical therapy"/> 
      </coding> 
      <text value="Physical therapy"/> 
    </concept> 
  </code> 
  <quantityRatio> 
    <numerator> 
      <value value="20"/> 
      <unit value="treatment"/> 
    </numerator> 
    <denominator> 
      <value value="1"/> 
      <unit value="month"/> 
    </denominator> 
  </quantityRatio> 
  <subject> 
    <reference value="Patient/example"/> 
  </subject> 
  <authoredOn value="2017-03-05"/> 
  <requester> 
    <reference value="Practitioner/3ad0687e-f477-468c-afd5-fcc2bf897809"/> 
    <display value="Dr. Beverly Crusher"/> 
  </requester> 
</ServiceRequest>