Acute myocardial infarction (AMI) 1) ST elevation myocardial infarction (STEMI) and non ST elevation myocardial infarction (NSTEMI) The ICD-9-CM codes for acute myocardial infarction (AMI) identify the site, such as anterolateral wall or true posterior wall. Subcategories 410.0-410.6 and 410.8 ...