Objective: This study describes a large database of closed medical professional liability (MPL) claims involving family physicians in the United States. The purpose of this report is to provide information for practicing family physicians that will be useful in improving the quality of care, thereby reducing the incidence of patient injury and the consequent frequency of MPL claims. Methods: The Physician Insurers Association of America (PIAA) established a registry of closed MPL claims in 1985. This registry contains data describing 239,756 closed claims in the United States through 2008. The registry is maintained for educational programs that are designed to improve quality of care and reduce patient injury MPL claims. We summarized this closed claims database. Results: Of 239,756 closed claims, 27,556 (11.5%) involved family physicians. Of these 27,556 closed claims, 8797 (31.9%) resulted in a payment, and the average payment was $164,107. In the entire registry, 29.5% of closed claims were paid, and the average payment was $209,156. The most common allegation among family medicine closed claims was diagnostic error, and the most prevalent diagnosis was acute myocardial infarction, which represented 24.1% of closed claims with diagnostic errors. Diagnostic errors related to patients with breast cancer represented the next most common condition, accounting for 21.3% of closed claims with diagnostic errors. Conclusions: MPL issues are common and are important to all practicing family physicians. Knowledge of the details of liability claims should assist practicing family physicians in improving quality of care, reducing patient injury, and reducing the incidence of MPL claims. (J Am Board Fam Med 2010;23:753-761.)
