Computerized provider order entry has been shown to decrease adverse drug events, but it can also introduce new medication errors. This retrospective study examined medication ordering errors intercepted by pharmacists for pediatric patients. As with prior studies in pediatrics, this investigation uncovered dosing errors associated with weight-based dosing, including calculation errors and missing weight information. The most common medication associated with errors was acetaminophen, which can cause severe harm if incorrectly dosed. The authors call for improving electronic health record prescribing interfaces, better user training, and enhancing communication among providers to prevent medication errors.