This consensus paper of the Harvard-affiliated hospitals was prepared by clinicians, risk managers, and patients to provide an in-depth understanding of preventable adverse events, their impact on patients, families, and providers, and how to manage such events. The report provides detailed guidelines based on the premise that all care should be safe and patient-centered and that all actions require full disclosure. In addition to offering recommendations on how to effectively communicate with patients and families, the report discusses support for caregivers and a detailed strategy for institutions to respond to such events in a timely and appropriate fashion. Finally, the comprehensive report offers several appendices that include recommendations and a case study on communicating with patients and families.