I72.5 — Aneurysm of other precerebral arteries
I72.5 is a billable, specific ICD-10-CM code for aneurysm of other precerebral arteries. It is valid for submission on a claim.
Excludes2 — not included here, but may coexist
The excluded condition is not part of this code, but a patient can have both. You may code both.
Inclusion terms
Alternative wordings a physician may use in the chart for this same code.
- Aneurysm of basilar artery (trunk)
Risk adjustment
I72.5 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
I72.5 is named in 10 Medicare coverage policies — 10 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
- A56580Billing and Coding: Computerized Axial Tomography (CT), Thorax
- A56612Billing and Coding: CT of the Head
- A56631Billing and Coding: Thoracic Aortography and Carotid, Vertebral, and Subclavian Angiography
How I72.5 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 I72.5.
- Aneurysm›basilar(trunk)
- Aneurysm›precerebral›specified site, NEC
Related codes at this level
Codes that share I72. If I72.5 is not quite right, the correct code is usually one of these.
Questions about I72.5
- Is I72.5 a billable ICD-10-CM code?
- Yes. I72.5 is a billable, specific ICD-10-CM code and is valid for submission on a claim.
- Where does I72.5 sit in the tabular list?
- Diseases of the circulatory system (I00-I99), in the block Diseases of arteries, arterioles and capillaries (I70-I79).