I68.2 — Cerebral arteritis in other diseases classified elsewhere
I68.2 is a billable, specific ICD-10-CM code for cerebral arteritis in other 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.
Code first
The underlying condition must be sequenced before this code.
- underlying disease
Risk adjustment
I68.2 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
I68.2 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.
- A56551Billing and Coding: Visual Fields Testing
- A56612Billing and Coding: CT of the Head
- A56631Billing and Coding: Thoracic Aortography and Carotid, Vertebral, and Subclavian Angiography
- A56799Billing and Coding: Visual Fields Testing
How I68.2 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 I68.2.
- Arteritis›cerebral›in›diseases classified elsewhere
Related codes at this level
Codes that share I68. If I68.2 is not quite right, the correct code is usually one of these.
Questions about I68.2
- Is I68.2 a billable ICD-10-CM code?
- Yes. I68.2 is a billable, specific ICD-10-CM code and is valid for submission on a claim.
- Where does I68.2 sit in the tabular list?
- Diseases of the circulatory system (I00-I99), in the block Cerebrovascular diseases (I60-I69).
- What cannot be coded together with I68.2?
- I68.2 carries an Excludes1 note, which means the conditions it lists can never be coded together with it on the same encounter.