I63.033 – Cerebral infarction due to thrombosis of bilateral carotid arteries

ICD-10-CM 2027 diagnosis code · Cerebrovascular diseases

Billable code

ICD-10-CM code I63.033
Code
I63.033 (claims format: I63033)
Description
Cerebral infarction due to thrombosis of bilateral carotid arteries
Short description
Cerebral infrc due to thombos of bilateral carotid arteries
Billable
Yes – valid for HIPAA-covered transactions
Valid for
Dates of service October 1, 2026 – September 30, 2027 (FY2027)
Chapter
9. Diseases of the circulatory system (I00-I99)
Block
I60-I69 Cerebrovascular diseases
Parent codes
I63 › I63.0 › I63.03

Notes inherited from parent codes

Instructional notes at a category or block level apply to every code below it.

I63 – Cerebral infarction

Includes:
  • occlusion and stenosis of cerebral and precerebral arteries, resulting in cerebral infarction
Excludes1 (not coded here):
  • neonatal cerebral infarction (P91.82-)
Excludes2 (not included here):
  • chronic, without residual deficits (sequelae) (Z86.73)
  • sequelae of cerebral infarction (I69.3-)
Use additional code:
  • code, if applicable, to identify status post administration of tPA (rtPA) in a different facility within the last 24 hours prior to admission to current facility (Z92.82)
  • code, if known, to indicate National Institutes of Health Stroke Scale (NIHSS) score (R29.7-)

Block I60-I69

Excludes1 (not coded here):
  • traumatic intracranial hemorrhage (S06.-)
Use additional code:
  • code to identify presence of:
  • alcohol abuse and dependence (F10.-)
  • exposure to environmental tobacco smoke (Z77.22)
  • history of tobacco dependence (Z87.891)
  • hypertension (I10-I1A)
  • occupational exposure to environmental tobacco smoke (Z57.31)
  • tobacco dependence (F17.-)
  • tobacco use (Z72.0)

Related codes in I63.03

Frequently asked questions

What is ICD-10 code I63.033?

I63.033 is the ICD-10-CM code for cerebral infarction due to thrombosis of bilateral carotid arteries, in the block I60-I69 (Cerebrovascular diseases).

Is I63.033 a billable code?

Yes. I63.033 is a billable/specific code that can be used to indicate a diagnosis for reimbursement purposes.

What category does I63.033 belong to?

It belongs to category I63 – Cerebral infarction.

Source: CDC/NCHS ICD-10-CM FY2027 code files, tabular list and index. Reference only – code assignment must follow the official ICD-10-CM guidelines and documentation in the medical record.