Table 2.

Severity Categories of Adverse Events Based on the System Used for Classifying Medication Errors by the National Coordinating Council for Medication Error Reporting and Prevention (National Coordinating Council for Medication Error Reporting and Prevention 2001)

Category E:	contributed to or resulted in temporary harm to the patient and required intervention
Category F:	contributed to or resulted in temporary harm to the patient and required initial or prolonged hospitalization
Category G:	contributed to or resulted in permanent patient harm
Category H:	required intervention to sustain life
Category I:	contributed to or resulted in the patient's death