{
  "resourceType": "StructureDefinition",
  "url": "https://example.org/fhir/StructureDefinition/CMSPatient",
  "name": "CMSPatient",
  "status": "draft",
  "fhirVersion": "4.0.1",
  "kind": "resource",
  "abstract": false,
  "type": "Patient",
  "baseDefinition": "http://hl7.org/fhir/StructureDefinition/Patient",
  "derivation": "constraint",
  "differential": {
    "element": [
      {
        "id": "Patient.identifier",
        "path": "Patient.identifier",
        "label": "http://hl7.org/fhir/sid/us-mbi",
        "slicing": {
          "description": "slice",
          "rules": "open"
        },
        "short": "An identifier for CMS",
        "min": 1
      },
      {
        "id": "Patient.identifier:CMS",
        "path": "Patient.identifier",
        "sliceName": "CMS",
        "code": [
          {
            "system": "http://hl7.org/fhir/sid/us-mbi"
          }
        ],
        "min": 1,
        "max": "1",
        "mustSupport": true
      },
      {
        "id": "Patient.identifier:CMS.system",
        "path": "Patient.identifier.system",
        "patternUri": "http://hl7.org/fhir/sid/us-mbi",
        "mustSupport": true
      }
    ]
  }
}