{
  "resourceType": "NamingSystem",
  "id": "PatientMrnNS",
  "name": "PatientMrn",
  "status": "draft",
  "kind": "identifier",
  "type": {
    "coding": [
      {
        "code": "MR",
        "system": "http://terminology.hl7.org/CodeSystem/v2-0203",
        "display": "Medical record number"
      }
    ]
  },
  "date": "2026-08-22",
  "publisher": "WELLSTAR Technologies Corp.",
  "responsible": "Nexus EMR (WELL Health) -- EMR-local identifier system",
  "description": "Identifies a patient's local Medical Record Number (chart number) as issued by the source EMR. EMR-LOCAL: values are unique only within the deployment that issued them, they are assigned by the source system rather than by any jurisdictional authority, and no format is guaranteed -- converted charts carry whatever the legacy system used. Consumers MUST NOT treat a value under this system as identifying a person across deployments, and MUST NOT match patients on it alone; the provincial health number carried on the Patient profile's jurisdictional identifier slice is the identifier with external meaning. Identifiers under this system carry the HL7 v2-0203 type code MR. The URI is stable and is pinned in stored Identifier.system values.",
  "uniqueId": [
    {
      "type": "uri",
      "value": "https://fhir.apps.health/NamingSystem/patient-mrn",
      "preferred": true
    }
  ]
}