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Table 1 Classification of medication errors according to the National Coordinating Council for Medication Error Reporting and Prevention [10]

From: Using Positive Deviance to reduce medication errors in a tertiary care hospital

Error class Definition
A No error The circumstances or events have the capacity to cause error
B Error, no harm An error occurred but did not reach the patient
C An error occurred, reached the patient but did not cause harm
D An error occurred, reached the patient and required monitoring to confirm that it resulted in no harm to the patient and/or required intervention to preclude harm
E Error, harm An error occurred, that may have contributed to temporary harm and required intervention
F An error occurred, that may have contributed to or resulted in temporary harm, and required initial or prolonged hospitalization
G An error occurred that may have contributed to or resulted in permanent harm
H An error occurred that required intervention necessary to sustain life
I Error, death An error occurred that may have contributed to or resulted in the patient’s death