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I22Non-billableSave

I22 - Subsequent ST elevation (STEMI) and non-ST elevation (NSTEMI) myocardial infarction

ICD-10-CM Chapter 9: Diseases of the circulatory system · I20-I25 Ischemic heart diseases (I20-I25) · Top-level category · FY2027

Coding Guidance

I22 is a non-billable heading. Report one of the 5 more specific codes below.

Includes, Excludes and Coding Notes

IncludesFrom I22

Conditions this code covers.

  • acute myocardial infarction occurring within four weeks (28 days) of a previous acute myocardial infarction, regardless of site
  • cardiac infarction
  • coronary (artery) embolism
  • coronary (artery) occlusion
  • coronary (artery) rupture
  • coronary (artery) thrombosis
  • infarction of heart, myocardium, or ventricle
  • recurrent myocardial infarction
  • reinfarction of myocardium
  • rupture of heart, myocardium, or ventricle
  • subsequent type 1 myocardial infarction
Excludes 1 — Not Coded HereFrom I22

Mutually exclusive: these conditions are never reported together with this code.

  • subsequent myocardial infarction, type 2 (I21.A1)
  • subsequent myocardial infarction of other type (type 3) (type 4) (type 5) (I21.A9)
Use Additional CodeFrom I22

Add a secondary code to identify the associated condition or cause when it is documented.

  • 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)
Code AlsoFrom I20-I25 Ischemic heart diseases (I20-I25)

Report an additional code when both conditions apply.

  • the presence of hypertension (I10-I1A)
Excludes 2 — Not Included HereFrom Chapter I00-I99

Not part of this code; report both codes when the patient has both conditions.

  • 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.-)

More Specific Codes (5)

I22.0Subsequent ST elevation (STEMI) myocardial infarction of anterior wall→I22.1Subsequent ST elevation (STEMI) myocardial infarction of inferior wall→I22.2Subsequent non-ST elevation (NSTEMI) myocardial infarction→I22.8Subsequent ST elevation (STEMI) myocardial infarction of other sites→I22.9Subsequent ST elevation (STEMI) myocardial infarction of unspecified site→