Acute myocardial infarction - I21

 Category Includes

  • cardiac infarction
  • coronary (artery) embolism
  • coronary (artery) occlusion
  • coronary (artery) rupture
  • coronary (artery) thrombosis
  • infarction of heart, myocardium, or ventricle
  • myocardial infarction specified as acute or with a stated duration of 4 weeks (28 days) or less from onset

 Use Additional

  • code, if applicable, to identify:
  • exposure to environmental tobacco smoke (Z77.22)
  • history of tobacco dependence (Z87.891)
  • occupational exposure to environmental tobacco smoke (Z57.31)
  • status post administration of tPA (rtPA) in a different facility within the last 24 hours prior to admission to current facility (Z92.82)
  • tobacco dependence (F17.-)
  • tobacco use (Z72.0)

 Type 2 Excludes

  • old myocardial infarction (I25.2)
  • postmyocardial infarction syndrome (I24.1)
  • subsequent type 1 myocardial infarction (I22.-)

 Codes

  • 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
  • I21.9 - Acute myocardial infarction, unspecified
  • 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