{
  "description": "A modifier extension for ElementDefinition that indicates the element uses a custom non-FHIR type. Supported types include 'any' (arbitrary JSON value), 'password' (sensitive credential), 'secret' (encrypted sensitive data), etc.",
  "_filename": "StructureDefinition-additional-properties-custom-type.json",
  "package_name": "io.health-samurai.core.r4",
  "date": null,
  "derivation": "constraint",
  "publisher": null,
  "fhirVersion": "4.0.1",
  "name": "CustomType",
  "abstract": false,
  "type": "Extension",
  "experimental": null,
  "resourceType": "StructureDefinition",
  "title": "Custom Type",
  "package_version": "0.2601.0",
  "status": "active",
  "id": "b44956e0-13d2-4f19-948f-25b85e9d4682",
  "kind": "complex-type",
  "url": "http://health-samurai.io/fhir/core/StructureDefinition/additional-properties-custom-type",
  "context": [ {
    "type": "element",
    "expression": "ElementDefinition.type"
  } ],
  "version": "0.2601.0",
  "differential": {
    "element": [ {
      "id": "Extension",
      "max": "1",
      "min": 0,
      "path": "Extension",
      "short": "Marks element as using custom non-FHIR type",
      "definition": "When present, indicates that the element uses a custom type not defined in the FHIR specification.",
      "isModifier": true,
      "isModifierReason": "This extension fundamentally changes the validation behavior of the element, allowing values of a custom type instead of FHIR-typed values"
    }, {
      "id": "Extension.extension",
      "max": "0",
      "path": "Extension.extension"
    }, {
      "id": "Extension.url",
      "path": "Extension.url",
      "fixedUri": "http://health-samurai.io/fhir/core/StructureDefinition/additional-properties-custom-type"
    }, {
      "id": "Extension.value[x]",
      "max": "1",
      "min": 1,
      "path": "Extension.value[x]",
      "type": [ {
        "code": "code"
      } ],
      "short": "Custom type code",
      "definition": "The code identifying the custom type: 'any' for arbitrary JSON, 'password' for sensitive credentials, 'secret' for encrypted data, etc."
    } ]
  },
  "baseDefinition": "http://hl7.org/fhir/StructureDefinition/Extension"
}