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I77.81

⚠ Non-billable (Header)

Aortic ectasia

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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Also Known As

Ectasis aorta

❌ Excludes1

direct

Cannot be coded with I77.81

  • • aortic aneurysm and dissection (I71.-)

Child Codes (4)

I77.810Thoracic aortic ectasiaI77.811Abdominal aortic ectasiaI77.812Thoracoabdominal aortic ectasiaI77.819Aortic ectasia, unspecified site

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Code Information

CodeI77.81
BillableNo — Header code
ParentI77.8
CategoryDiseases of the circulatory system (I00-I99)
Excludes11 rule(s)
Excludes20 note(s)
Child codes4

Data Source

CMS ICD-10-CM 2026 Tabular List

Updated October 1, 2025 (FY2026)