Table 6: Categories of Medication Error Classification

Medications at Transitions and Clinical Handoffs (MATCH) Toolkit for Medication Reconciliation

CategoryDescriptionExample
ANo error, capacity to cause errorNA
BError that did not reach the patientNA
CError that reached patient but unlikely to cause harm (omissions considered to reach patient)Multivitamin was not ordered on admission
DError that reached the patient and could have necessitated monitoring and/or intervention to preclude harmRegular release metoprolol was ordered for patient instead of extended-release
EError that could have caused temporary harmBlood pressure medication was inadvertently omitted from the orders
FError that could have caused temporary harm requiring initial or prolonged hospitalizationAnticoagulant, such as warfarin, was ordered daily when the patient takes it every other day
GError that could have resulted in permanent harmImmunosuppressant medication was unintentionally ordered at one-fourth the dose
HError that could have necessitated intervention to sustain lifeAnticonvulsant therapy was inadvertently omitted
IError that could have resulted in deathBeta-blocker was not reordered post-operatively
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Page last reviewed August 2012
Internet Citation: Table 6: Categories of Medication Error Classification: Medications at Transitions and Clinical Handoffs (MATCH) Toolkit for Medication Reconciliation. August 2012. Agency for Healthcare Research and Quality, Rockville, MD. http://www.ahrq.gov/professionals/quality-patient-safety/patient-safety-resources/resources/match/matchtab6.html