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I25.4

⚠ Non-billable (Header)

Coronary artery aneurysm and dissection

Diseases of the circulatory system (I00-I99)

⚠️ This is a category header code — not billable. Use a more specific child code below.

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⚠️ Excludes2

inherited from I25

Rules from parent category I25: Chronic ischemic heart disease

  • • non-ischemic myocardial injury (I5A)

📋 Code Instructions

from I25
  • • code to identify:
  • • chronic total occlusion of coronary artery (I25.82)
  • • exposure to environmental tobacco smoke (Z77.22)
  • • history of tobacco dependence (Z87.891)
  • • occupational exposure to environmental tobacco smoke (Z57.31)
  • • tobacco dependence (F17.-)
  • • tobacco use (Z72.0)

Child Codes (2)

I25.41Coronary artery aneurysmI25.42Coronary artery dissection

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Code Information

CodeI25.4
BillableNo — Header code
ParentI25
CategoryDiseases of the circulatory system (I00-I99)
Excludes10 rule(s)
Excludes21 note(s)
Child codes2

Data Source

CMS ICD-10-CM 2026 Tabular List

Updated October 1, 2025 (FY2026)