In this module, you will review the history of patient safety and quality improvement in healthcare. You will start with defining the scope of the problem of preventable harm in healthcare which leads into the history of the work that has been done to date that has helped to define, measure and improve preventable harm. You review three landmark reports to ensure you have a deep understanding of this work. At the end of this module, you will be able to: 1) identify a minimum of four key events in the history of patient safety an quality improvement, 2) describe the key characteristics of each of the three landmark patient safety publications and 3) summarize the impact of preventable harm on patients, communities and society.