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ICD-10 I21 - ST elevation (STEMI) and non-ST elevation (NSTEMI) myocardial infarction
Chapter 9 Section I20-I25

I21

ICD-10 Not billable

ST elevation (STEMI) and non-ST elevation (NSTEMI) myocardial infarction

Use additional code:
  • 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)
Specifically for this code:
  • 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
Specifically for this code:
  • old myocardial infarction (I25.2)
  • postmyocardial infarction syndrome (I24.1)
  • subsequent myocardial infarction (I22.-)
From Chapter 9:
  • certain conditions originating in the perinatal period (P04-P96)
  • certain infectious and parasitic diseases (A00-B99)
  • complications of pregnancy, childbirth and the puerperium (O00-O9A)
  • congenital malformations, deformations, and chromosomal abnormalities (Q00-Q99)
  • endocrine, nutritional and metabolic diseases (E00-E88)
  • injury, poisoning and certain other consequences of external causes (S00-T88)
  • neoplasms (C00-D49)
  • symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R94)
  • systemic connective tissue disorders (M30-M36)
  • transient cerebral ischemic attacks and related syndromes (G45.-)
I21 is a "category code," which means it's non-billable. Billable codes require more specificity. Use the list below to navigate to codes that are more specific:
10
I21.0
ST elevation (STEMI) myocardial infarction of anterior wall
10
I21.1
ST elevation (STEMI) myocardial infarction of inferior wall
10
I21.2
ST elevation (STEMI) myocardial infarction of other sites
10
I21.3
ST elevation (STEMI) myocardial infarction of unspecified site
Billable
10
I21.4
Non-ST elevation (NSTEMI) myocardial infarction
Billable
      
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