Is I63.3 a billable ICD-10-CM code?

No. I63.3 is a non-billable header code. Code to a higher level of specificity using one of its child codes.

Where does I63.3 sit in the tabular list?

Diseases of the circulatory system (I00-I99), in the block Cerebrovascular diseases (I60-I69).

I63.3

I63.3 — Cerebral infarction due to thrombosis of cerebral arteries

Non-billable headerICD-10-CM

I63.3 is a non-billable header ICD-10-CM code for cerebral infarction due to thrombosis of cerebral arteries. It cannot be billed on its own: choose one of the more specific child codes below.

Other codes that can never be billed with I63.3

These codes carry an Excludes1 note pointing at I63.3. The conflict binds both ways, but ICD-10-CM only writes it down on one side — so you would not find this by reading I63.3 alone.

I66Occlusion and stenosis of cerebral arteries, not resulting in cerebral infarction
I67Other cerebrovascular diseases

Risk adjustment

I63.3 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.

Code to one of these instead I63.3

6 child codes. Green means billable.

Related codes at this level

Codes that share I63. If I63.3 is not quite right, the correct code is usually one of these.

Questions about I63.3

Is I63.3 a billable ICD-10-CM code?: No. I63.3 is a non-billable header code. Code to a higher level of specificity using one of its child codes.
Where does I63.3 sit in the tabular list?: Diseases of the circulatory system (I00-I99), in the block Cerebrovascular diseases (I60-I69).