I71.21
I71.21: Aneurysm of the ascending aorta, without rupture
Billable / specific codeICD-10-CM
I71.21 is a billable, specific ICD-10-CM code for aneurysm of the ascending aorta, without rupture. It is valid for submission on a claim.
Check I71.21 with the rest of the claim: free scrubberOther codes that can never be billed with I71.21
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
I71.21 is named in 31 Medicare coverage policies: 31 listing it as supporting medical necessity. Which one applies depends on your Medicare contractor.
- A52850Billing and Coding: Cardiac Catheterization and Coronary Angiography
- A52868Billing and Coding: Transesophageal Echocardiography (TEE)
- A56451Billing and Coding: Cardiac Computed Tomography (CCT) and Coronary Computed Tomography Angiography (CCTA)
- A56500Billing and Coding: Cardiac Catheterization and Coronary Angiography
Alphabetic index entries that lead here
- Aneurysm›aorta, aortic›ascending
- Aneurysm›aorta, aortic›thorax, thoracic›ascending
Code history
Unchanged in every release from FY2024 to FY2027.