Accuracy assessment of patient safety incident (PSI) codes and present-on-admission (POA) indicators: A cross-sectional analysis using the Patient Safety Incidents Inquiry (PSII) in Korea

Among the various methods used, administrative data collected for claims and billing purposes, such as diagnosis codes and present-on-admission (POA) indicators, can easily be employed to assess patient safety status. However, it is crucial that administrative data be accurate to generate valid estimates of adverse event (AE) occurrence.