I77.811 — Abdominal aortic ectasia
I77.811 is a billable, specific ICD-10-CM code for abdominal aortic ectasia. It is valid for submission on a claim.
Risk adjustment
I77.811 does not map to an HCC and does not risk-adjust under CMS-HCC V28. That is normal — most ICD-10 codes do not. It still needs to be coded correctly; it just will not move a RAF score.
Medicare coverage
I77.811 is named in 12 Medicare coverage policies — 12 listing it as supporting medical necessity. Which of them applies to you depends on your Medicare contractor, and coverage genuinely differs by state.
- A56580Billing and Coding: Computerized Axial Tomography (CT), Thorax
- A56682Billing and Coding: Diagnostic Abdominal Aortography and Renal Angiography
- A56697Billing and Coding: Non-Invasive Vascular Studies
- A56747Billing and Coding: Magnetic Resonance Angiography (MRA)
How I77.811 is indexed
Coders do not find codes by browsing the tabular list — they look them up in the alphabetic index, under the word the physician wrote. These are the index entries that lead here, so you can see which chart wordings map to I77.811.
- Ectasia, ectasis›aorta›abdominal
Related codes at this level
Codes that share I77.81. If I77.811 is not quite right, the correct code is usually one of these.
Questions about I77.811
- Is I77.811 a billable ICD-10-CM code?
- Yes. I77.811 is a billable, specific ICD-10-CM code and is valid for submission on a claim.
- Where does I77.811 sit in the tabular list?
- Diseases of the circulatory system (I00-I99), in the block Diseases of arteries, arterioles and capillaries (I70-I79).