{description: This field indicates the last point of entry prior to being admitted as an inpatient to the reporting facility.  It is contributed in  PV1-14 in HL7v2 and is used by the resource element  Encounter.hospitalization.admitSource in FHIR, package_name: ontariomicdrfhirimplementationguide-0.10.00, name: AacAdmitSource, type: null, package_version: 0.9.11, class: unknown, kind: null, url: 'http://cihi.ca/fhir/CodeSystem/aac-admit-source', version: '2018'}