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I71.9

✓ Billable

Aortic aneurysm of unspecified site, without rupture

Diseases of the circulatory system (I00-I99)

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Also Known As

Aneurysm of aortaDilatation of aortaHyaline necrosis of aorta

📋 Code Instructions

from I71
  • • Code first: , if applicable:
  • • Code first: syphilitic aortic aneurysm (A52.01)
  • • Code first: traumatic aortic aneurysm (S25.09, S35.09)
✅ No additional coding notes for I71.9

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Code Information

CodeI71.9
BillableYes
ParentI71
CategoryDiseases of the circulatory system (I00-I99)
Excludes10 rule(s)
Excludes20 note(s)

Data Source

CMS ICD-10-CM 2026 Tabular List

Updated October 1, 2025 (FY2026)