I79.0 — Aneurysm of aorta in diseases classified elsewhere
I79.0 is a billable, specific ICD-10-CM code for aneurysm of aorta in diseases classified elsewhere. It is valid for submission on a claim.
Excludes1 — never code together
These conditions cannot occur together. Billing both on the same encounter is a denial.
- syphilitic aneurysm (A52.01)
Code first
The underlying condition must be sequenced before this code.
- underlying disease
Risk adjustment
I79.0 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
I79.0 is named in 25 Medicare coverage policies — 25 listing it as supporting medical necessity. Which of them applies to you depends on your Medicare contractor, and coverage genuinely differs by state.
- A52850Billing and Coding: Cardiac Catheterization and Coronary Angiography
- A56232Billing and Coding: Foot Care
- A56421Billing and Coding: CT of the Abdomen and Pelvis
- A56476Billing and Coding: Cardiac Radionuclide Imaging
Related codes at this level
Codes that share I79. If I79.0 is not quite right, the correct code is usually one of these.
Questions about I79.0
- Is I79.0 a billable ICD-10-CM code?
- Yes. I79.0 is a billable, specific ICD-10-CM code and is valid for submission on a claim.
- Where does I79.0 sit in the tabular list?
- Diseases of the circulatory system (I00-I99), in the block Diseases of arteries, arterioles and capillaries (I70-I79).
- What cannot be coded together with I79.0?
- I79.0 carries an Excludes1 note, which means the conditions it lists can never be coded together with it on the same encounter.