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Table 1 An overview of the Minnesota Code Classification System for Electrocardiographic Findings

From: Prospective associations between ECG abnormalities and death or myocardial infarction in a cohort of 980 employed, middle-aged Swedish men

Minnesota Code ECG abnormality
1-1-1….1-3-6 Q waves
2-1……3-5 QRS axis deviation
3-1……3-3 High amplitude R waves
4-1-1…4-4 ST junction (J) and segment depression
5-1…..5-4 T wave items
6-1…..6-8 A-V conduction defect
7-1-1…7-8 Ventricular conduction defect
8-1-1…8-9 Arrhythmias
  Miscellaneous including ST-segment elevation (9-2)