ICD10BillableValid for clinical use

ICD-10 Code I63.212: Cerebral infarction due to unspecified occlusion or stenosis of left vertebral artery

I63.212 is a billable ICD-10 diagnosis code used to classify Cerebral infarction due to unspecified occlusion or stenosis of left vertebral artery in medical records and claims. You may see this code in hospital records, discharge summaries, insurance claims, encounter documentation, referrals, or other healthcare billing and coding records. ICD-10 codes are diagnosis classification codes used in healthcare records, reporting, coding workflows, and billing support. This code sits within the broader ICD-10 area for Diseases of the circulatory system (I00-I99).

Reviewed by HealthAssure Clinical TeamUpdated 26 May 2026

What is this code?

ICD-10 codes are diagnosis classification codes used in healthcare records, reporting, coding workflows, and billing support. This code sits within the broader ICD-10 area for Diseases of the circulatory system (I00-I99).

When is it used?

  • May be used when a clinician documents cerebral infarction due to unspecified occlusion or stenosis of left vertebral artery in a patient's medical record.
  • May appear in hospital records, claims, referrals, and clinical documentation.
  • This code can be used as a clinically usable diagnosis entry in standardized coding workflows.

What it does not mean

  • A code alone does not explain severity, treatment plan, or outcome.
  • A medical code should not be treated as a substitute for a doctor's diagnosis or advice.

Code hierarchy

chapter
9Diseases of the circulatory system (I00-I99)
block
I60-I69Cerebrovascular diseases
category
I63Cerebral infarction
category
I63.2Cerebral infarction due to unspecified occlusion or stenosis of precerebral arteries
category
I63.21Cerebral infarction due to unspecified occlusion or stenosis of vertebral arteries
currentI63.21

Where you may see this code

You may see this code in hospital records, discharge summaries, insurance claims, encounter documentation, referrals, or other healthcare billing and coding records.

Related specialists

CardiologistGeneral PhysicianNeurologistStroke Specialist

Coding guidelines

Common synonyms

Cerebral infarction due to unspecified occlusion or stenosis of left vertebral arteryCerebral infarction due to occlusion or stenosis of left vertebral artery

Frequently asked questions

Code details

CodeI63.212
SystemICD10
Display nameCerebral infarction due to unspecified occlusion or stenosis of left vertebral artery
ChapterDiseases of the circulatory system (I00-I99)
BlockCerebrovascular diseases

Flags

BillableYes
Valid clinical useYes

Source

SourceICD-10
Version2026-annual
Releaseannual
Year2026

About this content

This page is prepared by HealthAssure's clinical team using official coding standards from ICD-10. AI tools assist with drafting explanations, which are then reviewed and verified by healthcare professionals for accuracy. This content is for informational purposes and does not replace professional medical advice. Meet our team.

ICD-10 Code I63.212 for Cerebral infarction due to unspecified occlusion or stenosis of left vertebral artery | HealthAssure