{
  "resourceType": "StructureDefinition",
  "id": "ext-substance-details",
  "url": "https://fhir.synapxe.sg/StructureDefinition/ext-substance-details",
  "name": "SubstanceDetails",
  "title": "Allergy Substance Details Extension",
  "status": "active",
  "publisher": "Synapxe",
  "description": "Extension for additional drug information associated with an AllergyIntolerance reaction substance.",
  "fhirVersion": "5.0.0",
  "kind": "complex-type",
  "abstract": false,
  "context": [
    {
      "type": "element",
      "expression": "AllergyIntolerance.reaction.substance"
    }
  ],
  "type": "Extension",
  "baseDefinition": "http://hl7.org/fhir/StructureDefinition/Extension",
  "derivation": "constraint",
  "differential": {
    "element": [
      {
        "id": "Extension",
        "path": "Extension"
      },
      {
        "id": "Extension.extension",
        "path": "Extension.extension",
        "min": 7
      },
      {
        "id": "Extension.extension:period",
        "path": "Extension.extension",
        "sliceName": "period",
        "min": 1,
        "max": "1"
      },
      {
        "id": "Extension.extension:period.url",
        "path": "Extension.extension.url",
        "fixedUri": "period"
      },
      {
        "id": "Extension.extension:period.value[x]",
        "path": "Extension.extension.value[x]",
        "min": 1,
        "type": [
          {
            "code": "Period"
          }
        ]
      },
      {
        "id": "Extension.extension:probability",
        "path": "Extension.extension",
        "sliceName": "probability",
        "min": 1,
        "max": "1"
      },
      {
        "id": "Extension.extension:probability.url",
        "path": "Extension.extension.url",
        "fixedUri": "probability"
      },
      {
        "id": "Extension.extension:probability.value[x]",
        "path": "Extension.extension.value[x]",
        "min": 1,
        "type": [
          {
            "code": "CodeableConcept"
          }
        ],
        "binding": {
          "strength": "required",
          "valueSet": "https://fhir.synapxe.sg/ValueSet/drug-probability"
        }
      },
      {
        "id": "Extension.extension:brand",
        "path": "Extension.extension",
        "sliceName": "brand",
        "min": 1,
        "max": "1"
      },
      {
        "id": "Extension.extension:brand.url",
        "path": "Extension.extension.url",
        "fixedUri": "brand"
      },
      {
        "id": "Extension.extension:brand.value[x]",
        "path": "Extension.extension.value[x]",
        "min": 1,
        "type": [
          {
            "code": "CodeableConcept"
          }
        ],
        "binding": {
          "strength": "required",
          "valueSet": "https://fhir.synapxe.sg/ValueSet/drug-brand"
        }
      },
      {
        "id": "Extension.extension:type",
        "path": "Extension.extension",
        "sliceName": "type",
        "min": 1,
        "max": "1"
      },
      {
        "id": "Extension.extension:type.url",
        "path": "Extension.extension.url",
        "fixedUri": "type"
      },
      {
        "id": "Extension.extension:type.value[x]",
        "path": "Extension.extension.value[x]",
        "min": 1,
        "type": [
          {
            "code": "string"
          }
        ]
      },
      {
        "id": "Extension.extension:note",
        "path": "Extension.extension",
        "sliceName": "note",
        "min": 1,
        "max": "1"
      },
      {
        "id": "Extension.extension:note.url",
        "path": "Extension.extension.url",
        "fixedUri": "note"
      },
      {
        "id": "Extension.extension:note.value[x]",
        "path": "Extension.extension.value[x]",
        "min": 1,
        "type": [
          {
            "code": "string"
          }
        ]
      },
      {
        "id": "Extension.extension:indication",
        "path": "Extension.extension",
        "sliceName": "indication",
        "min": 1,
        "max": "1"
      },
      {
        "id": "Extension.extension:indication.url",
        "path": "Extension.extension.url",
        "fixedUri": "indication"
      },
      {
        "id": "Extension.extension:indication.value[x]",
        "path": "Extension.extension.value[x]",
        "min": 1,
        "type": [
          {
            "code": "string"
          }
        ]
      },
      {
        "id": "Extension.extension:batchNo",
        "path": "Extension.extension",
        "sliceName": "batchNo",
        "min": 1,
        "max": "1"
      },
      {
        "id": "Extension.extension:batchNo.url",
        "path": "Extension.extension.url",
        "fixedUri": "batchNo"
      },
      {
        "id": "Extension.extension:batchNo.value[x]",
        "path": "Extension.extension.value[x]",
        "min": 1,
        "type": [
          {
            "code": "string"
          }
        ]
      },
      {
        "id": "Extension.url",
        "path": "Extension.url",
        "fixedUri": "https://fhir.synapxe.sg/StructureDefinition/ext-substance-details"
      },
      {
        "id": "Extension.value[x]",
        "path": "Extension.value[x]",
        "max": "0"
      }
    ]
  }
}