I22.8

✓ Billable

Subsequent ST elevation (STEMI) myocardial infarction of other sites

Diseases of the circulatory system (I00-I99)

Also Known As

Subsequent acute transmural myocardial infarction of other sitesSubsequent apical-lateral transmural (Q wave) myocardial infarction (acute)Subsequent basal-lateral transmural (Q wave) myocardial infarction (acute)Subsequent high lateral transmural (Q wave) myocardial infarction (acute)Subsequent transmural (Q wave) myocardial infarction (acute)(of) lateral (wall) NOSSubsequent posterior (true) transmural (Q wave) myocardial infarction (acute)Subsequent posterobasal transmural (Q wave) myocardial infarction (acute)Subsequent posterolateral transmural (Q wave) myocardial infarction (acute)Subsequent posteroseptal transmural (Q wave) myocardial infarction (acute)Subsequent septal NOS transmural (Q wave) myocardial infarction (acute)

❌ Excludes1

inherited from I22

Rules from parent category I22: Subsequent ST elevation (STEMI) and non-ST elevation (NSTEMI) myocardial infarction

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

📋 Code Instructions

from I22

• 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)

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Code Information

CodeI22.8

BillableYes

ParentI22

CategoryDiseases of the circulatory system (I00-I99)

Excludes12 rule(s)

Excludes20 note(s)

Data Source

CMS ICD-10-CM 2026 Tabular List

Updated October 1, 2025 (FY2026)