2025 ICD-10-CM Diagnosis Code I25.41

Coronary artery aneurysm

• I25.41 is a billable/specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes.
• The 2025 edition of ICD-10-CM I25.41 became effective on October 1, 2024.
• This is the American ICD-10-CM version of I25.41 – other international versions of ICD-10 I25.41 may differ.

Applicable To

• Coronary arteriovenous fistula, acquired

Type 1 Excludes

• congenital coronary (artery) aneurysm (Q24.5)

The following code(s) above I25.41 contain annotation back-references

 that may be applicable to I25.41:

• I00-I99  Diseases of the circulatory system
• I20-I25  Ischemic heart diseases
• I25  Chronic ischemic heart disease

Approximate Synonyms

• Acquired arteriovenous fistula of heart
• Acquired coronary arteriovenous fistula
• Aneurysm of coronary artery due to acute febrile mucocutaneous lymph node syndrome
• Aneurysm of coronary vessels
• Aneurysm, coronary vessel
• Coronary aneurysm in kawasaki disease
• Dissecting aneurysm of coronary artery
• Dissecting coronary artery aneurysm

Clinical Information

• Abnormal balloon- or sac-like dilatation in the wall of coronary vessels. Most coronary aneurysms are due to coronary atherosclerosis, and the rest are due to inflammatory diseases, such as kawasaki disease.

ICD-10-CM I25.41 is grouped within Diagnostic Related Group(s) (MS-DRG v42.0):

• 314 Other circulatory system diagnoses with mcc
• 315 Other circulatory system diagnoses with cc
• 316 Other circulatory system diagnoses without cc/mcc

Convert I25.41 to ICD-9-CMCode History

• 2016 (effective 10/1/2015): New code (first year of non-draft ICD-10-CM)
• 2017 (effective 10/1/2016): No change
• 2018 (effective 10/1/2017): No change
• 2019 (effective 10/1/2018): No change
• 2020 (effective 10/1/2019): No change
• 2021 (effective 10/1/2020): No change
• 2022 (effective 10/1/2021): No change
• 2023 (effective 10/1/2022): No change
• 2024 (effective 10/1/2023): No change
• 2025 (effective 10/1/2024): No change

Diagnosis Index entries containing back-references to I25.41:

• Aneurysm (anastomotic) (artery) (cirsoid) (diffuse) (false) (fusiform) (multiple) (saccular) I72.9
  • arteriovenous (congenital) – see also Malformation, arteriovenous
    • acquiredI77.0
      • coronary I25.41
  • coronary (arteriosclerotic) (artery) I25.41
• Fistula (cutaneous) L98.8
  • arteriovenous (acquired) (nonruptured) I77.0
    • coronary I25.41
  • coronary, arteriovenous I25.41