I71.9

I71.9: Aortic aneurysm of unspecified site, without rupture

Billable / specific codeICD-10-CM

I71.9 is a billable, specific ICD-10-CM code for aortic aneurysm of unspecified site, without rupture. It is valid for submission on a claim.

Check I71.9 with the rest of the claim: free scrubber

Inclusion terms

Alternative wordings a physician may use in the chart for this same code.

Aneurysm of aorta
Dilatation of aorta
Hyaline necrosis of aorta

Other codes that can never be billed with I71.9

Their own Excludes1 notes name this code, so the conflict is not listed above.

I77.81Aortic ectasia

Risk adjustment

No CMS-HCC V28 category: this code does not change a RAF score.

Medicare coverage

I71.9 is named in 9 Medicare coverage policies: 9 listing it as supporting medical necessity. Which one applies depends on your Medicare contractor.

A52850Billing and Coding: Cardiac Catheterization and Coronary Angiography
A56421Billing and Coding: CT of the Abdomen and Pelvis
A56476Billing and Coding: Cardiac Radionuclide Imaging
A56722Billing and Coding: Intraoperative Neurophysiological Testing

Alphabetic index entries that lead here

Fernell's disease(aortic aneurysm)
Aneurysm›aorta, aortic(nonsyphilitic)
Aneurysm›cylindroid(aorta)
Disease, diseased›Fernels'(aortic aneurysm)
Aneurysm›aorta, aortic›arteriosclerotic
Aneurysm›aorta, aortic›descending

Code history

Unchanged in every release from FY2024 to FY2027.