Table 1

Classifications used by the Minnesota Code

Minnesota CodeECG abnormality
1-1-1 . . . . . .1-3-6Q waves
2-1 . . . . . .2-5QRS axis deviation
3-1 . . . . . .3-3High amplitude R waves
4-1-1 . . . . . .4-4ST junction (J) and segment depression
5-1 . . . . . .5-4T wave items
6-1 . . . . . .6-8A-V conduction defect
7-1-1 . . . . . .7-8Ventricular conduction defect
8-1-1 . . . . . .8-9Arrhythmias
9-1 . . . . . .9-8-2Miscellaneous including ST segment elevation (9-2)
• Codes 1, 4, 5, and 9-2 (ST elevation) are grouped by leads, resulting in three subclassifications of anterolateral, posterior (inferior) and anterior.