OMOP-Convertible AllergyIntolerance → observation

{
  "resourceType": "StructureDefinition",
  "id": "omop-allergyintolerance-observation",
  "url": "https://fhir2omop.health-samurai.io/StructureDefinition/omop-allergyintolerance-observation",
  "version": "0.1.0",
  "name": "OmopAllergyIntoleranceObservation",
  "title": "OMOP-Convertible AllergyIntolerance → observation",
  "status": "draft",
  "experimental": true,
  "description": "FHIR AllergyIntolerance that can be converted to OMOP `observation`. OMOP has no dedicated allergy table — allergies live in the observation table with allergy-specific SNOMED concepts. clinicalStatus must be active or resolved (or absent); verificationStatus must not be entered-in-error or refuted; code is required.",
  "fhirVersion": "4.0.1",
  "kind": "resource",
  "abstract": false,
  "type": "AllergyIntolerance",
  "baseDefinition": "http://hl7.org/fhir/StructureDefinition/AllergyIntolerance",
  "derivation": "constraint",
  "extension": [
    {
      "url": "https://fhir2omop.health-samurai.io/StructureDefinition/omop-target-table",
      "valueString": "observation"
    },
    {
      "url": "https://fhir2omop.health-samurai.io/StructureDefinition/omop-edge",
      "valueString": "AllergyIntolerance__observation"
    }
  ],
  "differential": {
    "element": [
      {
        "id": "AllergyIntolerance.clinicalStatus",
        "path": "AllergyIntolerance.clinicalStatus",
        "binding": {
          "strength": "required",
          "valueSet": "http://hl7.org/fhir/ValueSet/allergyintolerance-clinical",
          "description": "active | resolved (inactive is skipped). Absent is mapped permissively."
        }
      },
      {
        "id": "AllergyIntolerance.verificationStatus",
        "path": "AllergyIntolerance.verificationStatus",
        "binding": {
          "strength": "required",
          "valueSet": "http://hl7.org/fhir/ValueSet/allergyintolerance-verification",
          "description": "Must not be entered-in-error or refuted."
        }
      },
      {
        "id": "AllergyIntolerance.code",
        "path": "AllergyIntolerance.code",
        "min": 1,
        "mustSupport": true,
        "binding": {
          "strength": "required",
          "valueSet": "https://fhir2omop.health-samurai.io/ValueSet/omop-observation-codes",
          "description": "SNOMED allergy/substance code. AllergyIntolerance routes to the OMOP observation table regardless of substance domain; this binding is the routing key. The omop-observation-codes ValueSet (domain Observation) is reused here pending a dedicated Allergy ValueSet."
        }
      },
      {
        "id": "AllergyIntolerance.patient",
        "path": "AllergyIntolerance.patient",
        "min": 1,
        "type": [
          {
            "code": "Reference",
            "targetProfile": [
              "http://hl7.org/fhir/StructureDefinition/Patient"
            ]
          }
        ],
        "comment": "Required for observation.person_id."
      }
    ]
  },
  "targetTable": "observation",
  "edgeKey": "AllergyIntolerance__observation"
}