I77.811 – Abdominal aortic ectasia

ICD-10-CM 2027 diagnosis code · Diseases of arteries, arterioles and capillaries

Billable code

ICD-10-CM code I77.811

Code: I77.811 (claims format: I77811)
Description: Abdominal aortic ectasia
Billable: Yes – valid for HIPAA-covered transactions
Valid for: Dates of service October 1, 2026 – September 30, 2027 (FY2027)
Chapter: 9. Diseases of the circulatory system (I00-I99)
Block: I70-I79 Diseases of arteries, arterioles and capillaries
Parent codes: I77 › I77.8 › I77.81

Notes inherited from parent codes

Instructional notes at a category or block level apply to every code below it.

I77 – Other disorders of arteries and arterioles

Excludes2 (not included here):

collagen (vascular) diseases (M30-M36)
hypersensitivity angiitis (M31.0)
pulmonary artery (I28.-)

I77.81 – Aortic ectasia

Applicable to:

Ectasis aorta

Excludes1 (not coded here):

aortic aneurysm and dissection (I71.-)

Index terms for I77.811

Entries in the ICD-10-CM alphabetic index that lead to this code:

Ectasia, ectasis, aorta, abdominal

Related codes in I77.81

I77.810 – Thoracic aortic ectasiaBillable
I77.812 – Thoracoabdominal aortic ectasiaBillable
I77.819 – Aortic ectasia, unspecified siteBillable

Frequently asked questions

What is ICD-10 code I77.811?

I77.811 is the ICD-10-CM code for abdominal aortic ectasia, in the block I70-I79 (Diseases of arteries, arterioles and capillaries).

Is I77.811 a billable code?

Yes. I77.811 is a billable/specific code that can be used to indicate a diagnosis for reimbursement purposes.

What category does I77.811 belong to?

It belongs to category I77 – Other disorders of arteries and arterioles.

Source: CDC/NCHS ICD-10-CM FY2027 code files, tabular list and index. Reference only – code assignment must follow the official ICD-10-CM guidelines and documentation in the medical record.