{
  "resourceType" : "Observation",
  "id" : "BMIExample",
  "meta" : {
    "profile" : ["http://hl7.org/fhir/us/core/StructureDefinition/us-core-bmi|6.1.0"]
  },
  "language" : "en",
  "text" : {
    "status" : "generated",
    "div" : "<div xml:lang=\"en\" xmlns=\"http://www.w3.org/1999/xhtml\" lang=\"en\">BMI: 27.5 kg/m2 measured on 2026-01-15</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/PatientExample"
  },
  "effectiveDateTime" : "2026-01-15T10:30:00Z",
  "valueQuantity" : {
    "value" : 27.5,
    "unit" : "kg/m2",
    "system" : "http://unitsofmeasure.org",
    "code" : "kg/m2"
  }
}