{
  "resourceType": "Questionnaire",
  "status": "active",
  "item": [
    {
      "linkId": "gcs",
      "text": "Glasgow Coma Scale",
      "type": "group",
      "item": [
        {
          "linkId": "gcs-intro",
          "text": "Record the best response the patient gives in each category.",
          "type": "display"
        },
        {
          "linkId": "gcs-eye",
          "code": [
            {
              "system": "http://loinc.org",
              "code": "9267-6"
            }
          ],
          "text": "Eye opening response",
          "type": "choice",
          "extension": [
            {
              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
              "valueCodeableConcept": {
                "coding": [
                  {
                    "system": "http://hl7.org/fhir/questionnaire-item-control",
                    "code": "radio-button"
                  }
                ]
              }
            }
          ],
          "required": true,
          "answerOption": [
            {
              "extension": [
                {
                  "url": "http://hl7.org/fhir/StructureDefinition/ordinalValue",
                  "valueDecimal": 1
                }
              ],
              "valueCoding": {
                "system": "http://loinc.org",
                "code": "LA6553-7",
                "display": "No eye opening"
              }
            },
            {
              "extension": [
                {
                  "url": "http://hl7.org/fhir/StructureDefinition/ordinalValue",
                  "valueDecimal": 2
                }
              ],
              "valueCoding": {
                "system": "http://loinc.org",
                "code": "LA6554-5",
                "display": "Eye opening to pain"
              }
            },
            {
              "extension": [
                {
                  "url": "http://hl7.org/fhir/StructureDefinition/ordinalValue",
                  "valueDecimal": 3
                }
              ],
              "valueCoding": {
                "system": "http://loinc.org",
                "code": "LA6555-2",
                "display": "Eye opening to verbal command"
              }
            },
            {
              "extension": [
                {
                  "url": "http://hl7.org/fhir/StructureDefinition/ordinalValue",
                  "valueDecimal": 4
                }
              ],
              "valueCoding": {
                "system": "http://loinc.org",
                "code": "LA6556-0",
                "display": "Eyes open spontaneously"
              }
            }
          ]
        },
        {
          "linkId": "gcs-verbal",
          "code": [
            {
              "system": "http://loinc.org",
              "code": "9270-0"
            }
          ],
          "text": "Verbal response",
          "type": "choice",
          "extension": [
            {
              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
              "valueCodeableConcept": {
                "coding": [
                  {
                    "system": "http://hl7.org/fhir/questionnaire-item-control",
                    "code": "radio-button"
                  }
                ]
              }
            }
          ],
          "required": true,
          "answerOption": [
            {
              "extension": [
                {
                  "url": "http://hl7.org/fhir/StructureDefinition/ordinalValue",
                  "valueDecimal": 1
                }
              ],
              "valueCoding": {
                "system": "http://loinc.org",
                "code": "LA6557-8",
                "display": "No verbal response (>2 yrs); no vocal response (<=2 yrs)"
              }
            },
            {
              "extension": [
                {
                  "url": "http://hl7.org/fhir/StructureDefinition/ordinalValue",
                  "valueDecimal": 2
                }
              ],
              "valueCoding": {
                "system": "http://loinc.org",
                "code": "LA6558-6",
                "display": "Incomprehensible sounds"
              }
            },
            {
              "extension": [
                {
                  "url": "http://hl7.org/fhir/StructureDefinition/ordinalValue",
                  "valueDecimal": 3
                }
              ],
              "valueCoding": {
                "system": "http://loinc.org",
                "code": "LA6559-4",
                "display": "Inappropriate words"
              }
            },
            {
              "extension": [
                {
                  "url": "http://hl7.org/fhir/StructureDefinition/ordinalValue",
                  "valueDecimal": 4
                }
              ],
              "valueCoding": {
                "system": "http://loinc.org",
                "code": "LA6560-2",
                "display": "Confused"
              }
            },
            {
              "extension": [
                {
                  "url": "http://hl7.org/fhir/StructureDefinition/ordinalValue",
                  "valueDecimal": 5
                }
              ],
              "valueCoding": {
                "system": "http://loinc.org",
                "code": "LA6561-0",
                "display": "Oriented"
              }
            }
          ]
        },
        {
          "linkId": "gcs-motor",
          "code": [
            {
              "system": "http://loinc.org",
              "code": "9268-4"
            }
          ],
          "text": "Motor response",
          "type": "choice",
          "extension": [
            {
              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
              "valueCodeableConcept": {
                "coding": [
                  {
                    "system": "http://hl7.org/fhir/questionnaire-item-control",
                    "code": "radio-button"
                  }
                ]
              }
            }
          ],
          "required": true,
          "answerOption": [
            {
              "extension": [
                {
                  "url": "http://hl7.org/fhir/StructureDefinition/ordinalValue",
                  "valueDecimal": 1
                }
              ],
              "valueCoding": {
                "system": "http://loinc.org",
                "code": "LA6562-8",
                "display": "No motor response"
              }
            },
            {
              "extension": [
                {
                  "url": "http://hl7.org/fhir/StructureDefinition/ordinalValue",
                  "valueDecimal": 2
                }
              ],
              "valueCoding": {
                "system": "http://loinc.org",
                "code": "LA6563-6",
                "display": "Extension to pain"
              }
            },
            {
              "extension": [
                {
                  "url": "http://hl7.org/fhir/StructureDefinition/ordinalValue",
                  "valueDecimal": 3
                }
              ],
              "valueCoding": {
                "system": "http://loinc.org",
                "code": "LA6564-4",
                "display": "Flexion to pain"
              }
            },
            {
              "extension": [
                {
                  "url": "http://hl7.org/fhir/StructureDefinition/ordinalValue",
                  "valueDecimal": 4
                }
              ],
              "valueCoding": {
                "system": "http://loinc.org",
                "code": "LA6565-1",
                "display": "Withdrawal from pain"
              }
            },
            {
              "extension": [
                {
                  "url": "http://hl7.org/fhir/StructureDefinition/ordinalValue",
                  "valueDecimal": 5
                }
              ],
              "valueCoding": {
                "system": "http://loinc.org",
                "code": "LA6566-9",
                "display": "Localizing pain"
              }
            },
            {
              "extension": [
                {
                  "url": "http://hl7.org/fhir/StructureDefinition/ordinalValue",
                  "valueDecimal": 6
                }
              ],
              "valueCoding": {
                "system": "http://loinc.org",
                "code": "LA6567-7",
                "display": "Obeys commands"
              }
            }
          ]
        },
        {
          "linkId": "gcs-total",
          "code": [
            {
              "system": "http://loinc.org",
              "code": "9269-2"
            }
          ],
          "text": "Glasgow Coma Scale total score (3–15)",
          "type": "decimal",
          "readOnly": true,
          "extension": [
            {
              "url": "http://hl7.org/fhir/uv/sdc/StructureDefinition/sdc-questionnaire-calculatedExpression",
              "valueExpression": {
                "language": "text/fhirpath",
                "expression": "iif(%resource.repeat(item).where(linkId in ('gcs-eye' | 'gcs-verbal' | 'gcs-motor')).answer.valueCoding.extension('http://hl7.org/fhir/StructureDefinition/ordinalValue').valueDecimal.count() = 3, %resource.repeat(item).where(linkId in ('gcs-eye' | 'gcs-verbal' | 'gcs-motor')).answer.valueCoding.extension('http://hl7.org/fhir/StructureDefinition/ordinalValue').valueDecimal.sum(), {})"
              }
            }
          ]
        },
        {
          "linkId": "gcs-severity",
          "text": "Severity",
          "type": "string",
          "readOnly": true,
          "extension": [
            {
              "url": "http://hl7.org/fhir/uv/sdc/StructureDefinition/sdc-questionnaire-calculatedExpression",
              "valueExpression": {
                "language": "text/fhirpath",
                "expression": "iif(%resource.repeat(item).where(linkId='gcs-total').answer.valueDecimal.exists(), iif(%resource.repeat(item).where(linkId='gcs-total').answer.valueDecimal < 9, 'Severe (GCS 3–8)', iif(%resource.repeat(item).where(linkId='gcs-total').answer.valueDecimal < 13, 'Moderate (GCS 9–12)', 'Mild (GCS 13–15)')), {})"
              }
            }
          ]
        }
      ]
    }
  ]
}