Which ICD-10-CM code is appropriate for acute myocardial infarction?

The appropriate ICD-10-CM code for acute myocardial infarction is I21.11. This code specifically classifies an ST elevation myocardial infarction (STEMI) that occurs in the left main coronary artery, which is a critical type of heart attack that requires immediate medical attention.

In the context of the other options, I21.9 is a non-specific code for acute myocardial infarction unspecified, which lacks the detail needed for proper diagnosis coding. I21.03 represents a STEMI of the right coronary artery, while I25.10 is used for ischemic heart disease, which does not directly indicate an acute myocardial infarction event. These distinctions are crucial in accurately capturing the patient's condition and ensuring proper treatment and resource allocation.