“…These include the Applied Strategies for Improving Patient Safety (APIS) [13], the Australian Incident Monitoring Study (AIMS) [14], the Medical Error Reporting SystemTransfusion Medicine (MERS-TM) [15,16], the Joint Commission for Accreditation for Healthcare Organization Patient Safety Event Taxonomy (JCAHO-PSET) [17], The Linnaeus Primary Care Collaborative [18], and the Cognitive Taxonomy [19]. Each system classifies and collects events for inpatient and/or outpatient care settings with varying degrees of validation, and using idiosyncratic terminology or complex classification frameworks [20]. Data sources vary from retrospective malpractice closed claims [14,21] to specific error types or sentinel events (retained foreign bodies, wrong sided surgery [22], unplanned returns [23], anesthetic events [24], respiratory events [25], and to types and locations of clinical care: ambulatory care [18], recovery room [26], or catheterization lab [27].…”