{
  "resourceType": "Observation",
  "id": "gcs-qa",
  "status": "final",
  "code": {
    "coding": [
      {
        "system": "http://loinc.org",
        "code": "9269-2",
        "display": "Glasgow coma score total"
      }
    ],
    "text": "Glasgow Coma Scale , (GCS)"
  },
  "subject": {
    "reference": "Patient/example",
    "display": "Peter James Chalmers"
  },
  "effectiveDateTime": "2014-12-11T04:44:16Z",
  "valueQuantity": {
    "value": 13,
    "system": "http://unitsofmeasure.org",
    "code": "{score}"
  },
  "referenceRange": [
    {
      "high": {
        "value": 8,
        "system": "http://unitsofmeasure.org",
        "code": "{score}"
      },
      "type": {
        "text": "Severe TBI"
      }
    },
    {
      "low": {
        "value": 9,
        "system": "http://unitsofmeasure.org",
        "code": "{score}"
      },
      "high": {
        "value": 12,
        "system": "http://unitsofmeasure.org",
        "code": "{score}"
      },
      "type": {
        "text": "Moderate TBI"
      }
    },
    {
      "low": {
        "value": 13,
        "system": "http://unitsofmeasure.org",
        "code": "{score}"
      },
      "type": {
        "text": "Mild TBI"
      }
    }
  ],
  "derivedFrom": [
    {
      "reference": "QuestionnaireResponse/gcs",
      "display": "GCS form results"
    }
  ],
  "meta": {
    "tag": [
      {
        "system": "http://terminology.hl7.org/CodeSystem/v3-ActReason",
        "code": "HTEST",
        "display": "test health data"
      }
    ]
  }
}