interoperability 5 HL7 v2 Messages: ADT, ORM, ORU and SIU Oct 18, 2026 FHIR Fundamentals: Resources, REST APIs and SMART on FHIR Oct 18, 2026 EHR, Practice Management and Payer Core Systems Oct 18, 2026 Medical Imaging Systems: DICOM, PACS and RIS Oct 18, 2026 CMS Interoperability and Prior Authorization Rule: Payer FHIR APIs Oct 18, 2026