The Agency for Healthcare Research and Quality?s Patient Safety Indicators (PSI) are a set of metrics that provide information on the potential for inpatient hospital complications and adverse events following surgeries, procedures, and childbirth. PSIs can be used to help hospitals identify potential adverse events that might need further evaluation, provide the opportunity to assess the incidence of adverse events and complications, and understand patient safety events on a broader level. In the United States in 2013, adverse outcomes were attributable to:
2,176,763 additional days of stay
$8,011,500,131 in additional total hospital costs of care
