ICD-10-CM > I00-I99 > I20-I25 > I25 > I25.4 > I25.41 I25.41 Coronary artery aneurysm Billable/Specific Copy Code Copy Description Applicable To Coronary arteriovenous fistula, acquired Type 1 Excludes congenital coronary (artery) aneurysm (Q24.5)