{ "description": "The actual start date of the Encounter (Backport from R5). The parameter cannot repeat or have multiple values.", "_filename": "encounter-date-start-SearchParameter.json", "package_name": "accdr.fhir.ig.pkg", "date": "2025-10-15", "expression": "Encounter.period.start", "publisher": "Ontario Health", "name": "date-start", "type": "date", "experimental": "false", "resourceType": "SearchParameter", "title": null, "package_version": "0.9.28", "status": "active", "id": "f1f39b75-1df1-4191-bab4-8368eb116bdb", "kind": null, "url": "http://ontariohealth.ca/fhir/accdr/SearchParameter/Encounter-date-start", "code": "date-start", "comparator": [ "eq", "ne", "gt", "ge", "lt", "le", "sa", "eb", "ap" ], "base": [ "Encounter" ], "version": "4.0.1" }