I21.9 Acute myocardial infarction, unspecified

Billable / valid for submission ICD10CM Release FY2026

Version history

Related codes in I21

• I21 Acute myocardial infarction
• I21.0 ST elevation (STEMI) myocardial infarction of anterior wall
• 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
• I21.1 ST elevation (STEMI) myocardial infarction of inferior 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
• I21.2 ST elevation (STEMI) myocardial infarction of other sites
• 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.A Other type of myocardial infarction
• I21.A1 Myocardial infarction type 2
• I21.A9 Other myocardial infarction type
• I21.B Myocardial infarction with coronary microvascular dysfunction

All I21 codes →