I63.09 — Cerebral infarction due to thrombosis of other precerebral artery
I63.09 is a billable, specific ICD-10-CM code for cerebral infarction due to thrombosis of other precerebral artery. It is valid for submission on a claim.
Risk adjustment
I63.09 risk-adjusts. Under the CMS-HCC V28 model it maps to this category:
- HCC 249 Ischemic or Unspecified Stroke0.239 RAF
Coefficient shown for the Community Non-dual Aged segment. A higher HCC in the same hierarchy will suppress this one, so capturing it does not always add score.
Medicare coverage
I63.09 is named in 36 Medicare coverage policies — 36 listing it as supporting medical necessity. Which of them applies to you depends on your Medicare contractor, and coverage genuinely differs by state.
- A52992Billing and Coding: Non-Invasive Cerebrovascular Arterial Studies
- A52992Billing and Coding: Non-Invasive Cerebrovascular Arterial Studies
- A56505Billing and Coding: Transesophageal Echocardiography (TEE)
- A56551Billing and Coding: Visual Fields Testing
How I63.09 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 I63.09.
- Occlusion, occluded›artery›precerebral›specified NEC›with infarction›due to›thrombosis
- Occlusion, occluded›artery›precerebral›with infarction›due to›thrombosis›specified NEC
Related codes at this level
Codes that share I63.0. If I63.09 is not quite right, the correct code is usually one of these.
Questions about I63.09
- Is I63.09 a billable ICD-10-CM code?
- Yes. I63.09 is a billable, specific ICD-10-CM code and is valid for submission on a claim.
- Where does I63.09 sit in the tabular list?
- Diseases of the circulatory system (I00-I99), in the block Cerebrovascular diseases (I60-I69).