{
  "description": "Extension to capture the age of onset of a rare disease using structured HPO age of onset terms",
  "_filename": "StructureDefinition-mii-ex-seltene-age-of-onset.json",
  "package_name": "de.medizininformatikinitiative.kerndatensatz.seltene",
  "date": null,
  "derivation": "constraint",
  "publisher": "Medizininformatik Initiative",
  "fhirVersion": "4.0.1",
  "name": "AgeOfOnset",
  "abstract": false,
  "type": "Extension",
  "experimental": null,
  "resourceType": "StructureDefinition",
  "title": "MII EX SE Age of Onset",
  "package_version": "2026.0.0-ballot",
  "status": "draft",
  "id": "7ce5a90f-1e70-4b9a-b6c3-d82e94f3d0c2",
  "kind": "complex-type",
  "url": "https://www.medizininformatik-initiative.de/fhir/ext/modul-seltene/StructureDefinition/mii-ex-seltene-age-of-onset",
  "context": [ {
    "type": "element",
    "expression": "Condition"
  } ],
  "version": "2026.0.0-ballot",
  "differential": {
    "element": [ {
      "id": "Extension",
      "path": "Extension",
      "short": "MII EX SE Age of Onset",
      "definition": "Extension to capture the age of onset of a rare disease using structured HPO age of onset terms"
    }, {
      "id": "Extension.extension",
      "max": "0",
      "path": "Extension.extension"
    }, {
      "id": "Extension.url",
      "path": "Extension.url",
      "fixedUri": "https://www.medizininformatik-initiative.de/fhir/ext/modul-seltene/StructureDefinition/mii-ex-seltene-age-of-onset"
    }, {
      "id": "Extension.value[x]",
      "path": "Extension.value[x]",
      "type": [ {
        "code": "CodeableConcept"
      } ],
      "short": "HPO age of onset term",
      "binding": {
        "strength": "required",
        "valueSet": "https://www.medizininformatik-initiative.de/fhir/ext/modul-seltene/ValueSet/mii-vs-seltene-hpo-age-of-onset"
      },
      "definition": "Age of onset coded using HPO age of onset terms (e.g., HP:0003577 Congenital onset, HP:0003593 Infantile onset)"
    } ]
  },
  "contact": [ {
    "telecom": [ {
      "value": "https://www.medizininformatik-initiative.de",
      "system": "url"
    } ]
  } ],
  "baseDefinition": "http://hl7.org/fhir/StructureDefinition/Extension"
}