{
  "resourceType": "StructureDefinition",
  "id": "au-substance",
  "url": "http://hl7.org.au/fhir/StructureDefinition/au-substance",
  "version": "1.1.0",
  "name": "AUBaseSubstance",
  "title": "AU Base Substance",
  "status": "draft",
  "date": "2019-08-16",
  "publisher": "Health Level Seven Australia",
  "contact": [
    {
      "telecom": [
        {
          "system": "url",
          "value": "http://hl7.org.au/fhir",
          "use": "work"
        }
      ]
    }
  ],
  "description": "This profile defines a substance structure including core localisation concepts for use in an Australian context.",
  "fhirVersion": "3.0.1",
  "kind": "resource",
  "abstract": false,
  "type": "Substance",
  "baseDefinition": "http://hl7.org/fhir/StructureDefinition/Substance",
  "derivation": "constraint",
  "differential": {
    "element": [
      {
        "id": "Substance",
        "path": "Substance",
        "short": "A substance in an Australian healthcare context"
      },
      {
        "id": "Substance.code",
        "path": "Substance.code",
        "binding": {
          "extension": [
            {
              "url": "http://hl7.org/fhir/StructureDefinition/elementdefinition-bindingName",
              "valueString": "SubstanceCode"
            }
          ],
          "strength": "preferred",
          "valueSetReference": {
            "reference": "https://healthterminologies.gov.au/fhir/ValueSet/substance-1"
          }
        }
      },
      {
        "id": "Substance.ingredient",
        "path": "Substance.ingredient"
      },
      {
        "id": "Substance.ingredient.substance[x]",
        "path": "Substance.ingredient.substance[x]",
        "slicing": {
          "discriminator": [
            {
              "type": "type",
              "path": "$this"
            }
          ],
          "rules": "closed"
        }
      },
      {
        "id": "Substance.ingredient.substance[x]:substanceCodeableConcept",
        "path": "Substance.ingredient.substance[x]",
        "sliceName": "substanceCodeableConcept",
        "min": 0,
        "type": [
          {
            "code": "CodeableConcept"
          }
        ],
        "binding": {
          "extension": [
            {
              "url": "http://hl7.org/fhir/StructureDefinition/elementdefinition-bindingName",
              "valueString": "SubstanceIngredient"
            }
          ],
          "strength": "preferred",
          "valueSetReference": {
            "reference": "https://healthterminologies.gov.au/fhir/ValueSet/substance-1"
          }
        }
      },
      {
        "id": "Substance.ingredient.substance[x]:substanceReference",
        "path": "Substance.ingredient.substance[x]",
        "sliceName": "substanceReference",
        "min": 0,
        "type": [
          {
            "code": "Reference",
            "targetProfile": "http://hl7.org.au/fhir/StructureDefinition/au-substance"
          }
        ]
      }
    ]
  }
}