<Observation xmlns="http://hl7.org/fhir">
  <id value="binet-stage-group-B" />
  <meta>
    <profile value="http://hl7.org/fhir/us/mcode/StructureDefinition/mcode-cancer-stage" />
  </meta>
  <status value="final" />
  <category>
    <coding>
      <system value="http://terminology.hl7.org/CodeSystem/observation-category" />
      <code value="laboratory" />
    </coding>
  </category>
  <code>
    <coding>
      <system value="http://ncicb.nci.nih.gov/xml/owl/EVS/Thesaurus.owl" />
      <code value="C141212" />
      <display value="Binet Stage" />
    </coding>
  </code>
  <subject>
    <reference value="Patient/example" />
  </subject>
  <focus>
    <reference value="Condition/primary-cancer-condition-cll" />
  </focus>
  <effectiveDateTime value="2021-04-01" />
  <performer>
    <reference value="Practitioner/us-core-practitioner-kyle-anydoc" />
  </performer>
  <valueCodeableConcept>
    <coding>
      <system value="http://ncicb.nci.nih.gov/xml/owl/EVS/Thesaurus.owl" />
      <code value="C80135" />
      <display value="Binet Stage B" />
    </coding>
  </valueCodeableConcept>
  <method>
    <coding>
      <system value="http://snomed.info/sct" />
      <code value="1149099005" />
      <display value="Binet staging classification for chronic lymphocytic leukemia (tumor staging)" />
    </coding>
  </method>
  <derivedFrom>
    <reference value="Observation/lab-result-observation-hemoglobin" />
  </derivedFrom>
</Observation>