{
  "resourceType" : "Observation",
  "id" : "observation-derived-bmi-example",
  "meta" : {
    "profile" : ["http://doh.gov.ph/fhir/ph-core/StructureDefinition/ph-core-observation"]
  },
  "text" : {
    "status" : "generated",
    "div" : "<div xmlns=\"http://www.w3.org/1999/xhtml\">BMI: 23.5 kg/m2 (Normal) calculated from weight and height measurements for Juan Dela Cruz.</div>"
  },
  "status" : "final",
  "category" : [{
    "coding" : [{
      "system" : "http://terminology.hl7.org/CodeSystem/observation-category",
      "code" : "vital-signs",
      "display" : "Vital Signs"
    }]
  }],
  "code" : {
    "coding" : [{
      "system" : "http://loinc.org",
      "code" : "39156-5",
      "display" : "Body mass index (BMI) [Ratio]"
    }]
  },
  "subject" : {
    "reference" : "Patient/patient-single-example"
  },
  "effectiveDateTime" : "2023-06-15T09:00:00Z",
  "performer" : [{
    "reference" : "PractitionerRole/practitionerrole-single-example"
  }],
  "valueQuantity" : {
    "value" : 23.5,
    "unit" : "kg/m2",
    "system" : "http://unitsofmeasure.org",
    "code" : "kg/m2"
  },
  "interpretation" : [{
    "coding" : [{
      "system" : "http://terminology.hl7.org/CodeSystem/v3-ObservationInterpretation",
      "code" : "N",
      "display" : "Normal"
    }]
  }],
  "derivedFrom" : [{
    "reference" : "Observation/observation-weight-example"
  },
  {
    "reference" : "Observation/observation-height-example"
  }]
}