A recent OIG report, "Hospital Incident Reporting Systems Do Not Capture Most Patient Harm,” estimates that hospital incident reporting systems captured only about 14% of the “patient harm events” experienced by Medicare beneficiaries. Because of what the OIG characterizes as an “absence of clear event reporting requirements,” administrators classified the remainder of unreported events as either events that staff did not perceive as reportable (62% of events) or that staff commonly reported but did not report in this case (25%). The OIG also reports that few policy or practice changes were made as a result of reported events. The OIG recommended that: (1) the Agency for Healthcare Research and Quality (AHRQ) and CMS collaborate to create and promote a list of potentially reportable events for hospitals to use; (2) CMS provide guidance to accreditors regarding their assessments of hospital efforts to track and analyze events; (3) surveyors evaluate the information collected by hospitals using AHRQ’s Common Formats; and (4) CMS review survey standards related to incident reporting systems. The agencies generally concurred.