{
  "resourceType": "StructureDefinition",
  "id": "ext-SubstituteDecisionMakers",
  "url": "https://vitalhub.com/fhir/StructureDefinition/ext-SubstituteDecisionMakers",
  "name": "SubstituteDecisionMakersExtension",
  "title": "Substitute Decision Makers Extension",
  "status": "active",
  "publisher": "VitalHub",
  "description": "Extension to capture substitute decision maker details including type, subtype, contact, period, legal status, and linked document GUID.",
  "fhirVersion": "4.0.1",
  "kind": "complex-type",
  "abstract": false,
  "type": "Extension",
  "baseDefinition": "http://hl7.org/fhir/StructureDefinition/Extension",
  "derivation": "constraint",
  "context": [
    {
      "type": "element",
      "expression": "Consent"
    }
  ],
  "differential": {
    "element": [
      {
        "id": "Extension",
        "path": "Extension",
        "short": "Substitute Decision Makers",
        "definition": "Complex extension capturing SDM type, subtype, contact, period, legal status, and linked document GUID."
      },
      {
        "id": "Extension.url",
        "path": "Extension.url",
        "min": 1,
        "max": "1",
        "fixedUri": "https://vitalhub.com/fhir/StructureDefinition/ext-SubstituteDecisionMakers"
      },
      {
        "id": "Extension.valueBoolean",
        "path": "Extension.valueBoolean",
        "short": "Substitute decision makers flag",
        "definition": "True if substitute decision makers are present, false if not.",
        "min": 0,
        "max": "1",
        "type": [
          {
            "code": "boolean"
          }
        ]
      },
      {
        "id": "Extension.extension",
        "path": "Extension.extension",
        "min": 0,
        "max": "*",
        "slicing": {
          "discriminator": [
            {
              "type": "value",
              "path": "url"
            }
          ],
          "ordered": false,
          "rules": "open"
        }
      },
      {
        "id": "Extension.extension:type",
        "path": "Extension.extension",
        "sliceName": "type",
        "short": "SDM type",
        "definition": "Type of substitute decision maker.",
        "min": 0,
        "max": "1"
      },
      {
        "id": "Extension.extension:type.url",
        "path": "Extension.extension.url",
        "fixedUri": "https://vitalhub.com/fhir/StructureDefinition/ext-SubstituteDecisionMakers#type",
        "min": 1,
        "max": "1"
      },
      {
        "id": "Extension.extension:type.valueCodeableConcept",
        "path": "Extension.extension.valueCodeableConcept",
        "min": 1,
        "max": "1",
        "type": [
          {
            "code": "CodeableConcept"
          }
        ],
        "binding": {
          "strength": "required",
          "valueSet": "https://vitalhub.com/fhir/ValueSet/vs-SDMTypes"
        }
      },
      {
        "id": "Extension.extension:subtype",
        "path": "Extension.extension",
        "sliceName": "subtype",
        "short": "SDM subtype",
        "definition": "Subtype of substitute decision maker.",
        "min": 0,
        "max": "1"
      },
      {
        "id": "Extension.extension:subtype.url",
        "path": "Extension.extension.url",
        "min": 0,
        "max": "1",
        "fixedUri": "https://vitalhub.com/fhir/StructureDefinition/ext-SubstituteDecisionMakers#subtype"
      },
      {
        "id": "Extension.extension:subtype.valueCodeableConcept",
        "path": "Extension.extension.valueCodeableConcept",
        "min": 1,
        "max": "1",
        "type": [
          {
            "code": "CodeableConcept"
          }
        ],
        "binding": {
          "strength": "required",
          "valueSet": "https://vitalhub.com/fhir/ValueSet/vs-SDMSubtypes"
        }
      },
      {
        "id": "Extension.extension:contact",
        "path": "Extension.extension",
        "sliceName": "contact",
        "short": "Contact GUID",
        "definition": "GUID linking to Patient.contact entry.",
        "min": 0,
        "max": "1"
      },
      {
        "id": "Extension.extension:contact.url",
        "path": "Extension.extension.url",
        "fixedUri": "https://vitalhub.com/fhir/StructureDefinition/ext-SubstituteDecisionMakers#contact",
        "min": 1,
        "max": "1"
      },
      {
        "id": "Extension.extension:contact.valueUri",
        "path": "Extension.extension.valueUri",
        "min": 1,
        "max": "1",
        "type": [
          {
            "code": "uri"
          }
        ]
      },
      {
        "id": "Extension.extension:start",
        "path": "Extension.extension",
        "sliceName": "start",
        "short": "SDM start date/time",
        "definition": "Start date/time of the SDM period.",
        "min": 0,
        "max": "1"
      },
      {
        "id": "Extension.extension:start.url",
        "path": "Extension.extension.url",
        "min": 1,
        "max": "1",
        "fixedUri": "https://vitalhub.com/fhir/StructureDefinition/ext-SubstituteDecisionMakers#start"
      },
      {
        "id": "Extension.extension:start.valueDateTime",
        "path": "Extension.extension.valueDateTime",
        "min": 0,
        "max": "1",
        "type": [
          {
            "code": "dateTime"
          }
        ]
      },
      {
        "id": "Extension.extension:Notes",
        "path": "Extension.extension",
        "sliceName": "Notes",
        "short": "Notes",
        "definition": "Notes",
        "min": 0,
        "max": "1"
      },
      {
        "id": "Extension.extension:Notes.url",
        "path": "Extension.extension.url",
        "min": 1,
        "max": "1",
        "fixedUri": "https://vitalhub.com/fhir/StructureDefinition/ext-SubstituteDecisionMakers#Notes"
      },
      {
        "id": "Extension.extension:Notes.valueString",
        "path": "Extension.extension.valueString",
        "min": 0,
        "max": "1",
        "type": [
          {
            "code": "string"
          }
        ]
      },
      {
        "id": "Extension.extension:end",
        "path": "Extension.extension",
        "sliceName": "end",
        "short": "SDM end date/time",
        "definition": "End date/time of the SDM period.",
        "min": 0,
        "max": "1"
      },
      {
        "id": "Extension.extension:end.url",
        "path": "Extension.extension.url",
        "min": 1,
        "max": "1",
        "fixedUri": "https://vitalhub.com/fhir/StructureDefinition/ext-SubstituteDecisionMakers#end"
      },
      {
        "id": "Extension.extension:end.valueDateTime",
        "path": "Extension.extension.valueDateTime",
        "min": 0,
        "max": "1",
        "type": [
          {
            "code": "dateTime"
          }
        ]
      },
      {
        "id": "Extension.extension:legalStatus",
        "path": "Extension.extension",
        "sliceName": "legalStatus",
        "short": "SDM legal status",
        "definition": "Legal status of the substitute decision maker.",
        "min": 0,
        "max": "1"
      },
      {
        "id": "Extension.extension:legalStatus.url",
        "path": "Extension.extension.url",
        "min": 1,
        "max": "1",
        "fixedUri": "https://vitalhub.com/fhir/StructureDefinition/ext-SubstituteDecisionMakers#legalStatus"
      },
      {
        "id": "Extension.extension:legalStatus.valueCodeableConcept",
        "path": "Extension.extension.valueCodeableConcept",
        "min": 1,
        "max": "1",
        "type": [
          {
            "code": "CodeableConcept"
          }
        ],
        "binding": {
          "strength": "required",
          "valueSet": "https://vitalhub.com/fhir/ValueSet/vs-SDMLegalStatus"
        }
      },
      {
        "id": "Extension.extension:linkedDocumentGUID",
        "path": "Extension.extension",
        "sliceName": "linkedDocumentGUID",
        "short": "Linked document GUID",
        "definition": "GUID linking this SDM record to its supporting document (from ext-Document).",
        "min": 0,
        "max": "1"
      },
      {
        "id": "Extension.extension:linkedDocumentGUID.url",
        "path": "Extension.extension.url",
        "min": 1,
        "max": "1",
        "fixedUri": "https://vitalhub.com/fhir/StructureDefinition/ext-SubstituteDecisionMakers#linkedDocumentGUID"
      },
      {
        "id": "Extension.extension:linkedDocumentGUID.valueUri",
        "path": "Extension.extension.valueUri",
        "min": 1,
        "max": "1",
        "type": [
          {
            "code": "uri"
          }
        ]
      }
    ]
  }
}