ICD-10-CM Codes 2026 (USA)

• I21.21	ST elevation (STEMI) myocardial infarction involving left circumflex coronary artery

• I21.01	ST elevation (STEMI) myocardial infarction involving left main coronary artery
  I21.02	ST elevation (STEMI) myocardial infarction involving left anterior descending coronary artery
  I21.09	ST elevation (STEMI) myocardial infarction involving other coronary artery of anterior wall
  I21.11	ST elevation (STEMI) myocardial infarction involving right coronary artery
  I21.19	ST elevation (STEMI) myocardial infarction involving other coronary artery of inferior wall
  I21.21	ST elevation (STEMI) myocardial infarction involving left circumflex coronary artery
  I21.29	ST elevation (STEMI) myocardial infarction involving other sites
  I21.3	ST elevation (STEMI) myocardial infarction of unspecified site
  I21.4	Non-ST elevation (NSTEMI) myocardial infarction
  I21.9	Acute myocardial infarction, unspecified
  I21.A1	Acute myocardial infarction type 2
  I21.A9	Other myocardial infarction type
  I21.B	Myocardial infarction with coronary microvascular dysfunction

Created by Peter Blahut, MD