AHA Coding Clinic® for ICD-10-CM and ICD-10-PCS - 2018 Issue 3; Ask the Editor

Acute Myocardial Infarction and Chronic Total Occlusion

The patient has been diagnosed with an acute myocardial infarction (AMI) and chronic total occlusion of the coronary artery. There is an excludes1 note at code I25.82, Chronic total occlusion of coronary artery, which excludes “acute coronary occlusion with myocardial infarction (I21.-, I22.-).” However, in this case, the occlusion and myocardial infarction are in different arteries. Is it acceptable to assign a code for both the acute MI and the chronic total occlusion? ...

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