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    v1.0.28
    OpenPayerBilling CodesCerebrovascular diseasesICD-10-CM i63-cerebral-infarction
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    ICD-10-CM Code For Cerebral Infarction: Group Overview

    The International Classification of Diseases, Tenth Revision, Clinical Modification (ICD-10-CM) code group I63 includes ischemic strokes and cerebral infarctions caused by occlusion or stenosis of cerebral arteries, specifying affected brain areas and laterality. These ICD-10-CM diagnosis codes are used to document acute cerebral ischemia events, capturing information about infarct location, extent, and any associated cerebral artery occlusion or recanalization status. Accurate coding within the ICD-10-CM I63 group supports proper claim adjudication and complete clinical documentation and appropriate reimbursement.

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    ICD-10-CM I63: Cerebral Infarction Overview

    The ICD-10-CM I63 group includes codes for cerebral infarction, commonly known as ischemic stroke, which result from occlusion of cerebral arteries leading to brain tissue ischemia and necrosis. These diagnoses target the cerebrovascular system and involve specifying the affected brain region, laterality, and any associated cerebral artery occlusion. Accurate coding matters for clinical communication and supports correct billing and reimbursement by reflecting severity and complications.

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    When to Use

    Use a code from this group when a clinician documents an acute ischemic stroke or cerebral infarction with specification of the affected brain region or artery. Select the most specific code that reflects laterality, anatomical site, and any documented arterial occlusion or recanalization.

    ICD-10-CM Codes

    91 rows

    ICD-10-CM CodeDescription
    I63.00Cerebral infarction due to thrombosis of unspecified precerebral artery
    I63.011Cerebral infarction due to thrombosis of right vertebral artery
    I63.012Cerebral infarction due to thrombosis of left vertebral artery
    I63.013Cerebral infarction due to thrombosis of bilateral vertebral arteries
    I63.019Cerebral infarction due to thrombosis of unspecified vertebral artery
    I63.02Cerebral infarction due to thrombosis of basilar artery
    I63.031Cerebral infarction due to thrombosis of right carotid artery
    I63.032Cerebral infarction due to thrombosis of left carotid artery
    I63.033Cerebral infarction due to thrombosis of bilateral carotid arteries
    I63.039Cerebral infarction due to thrombosis of unspecified carotid artery
    I63.09Cerebral infarction due to thrombosis of other precerebral artery
    I63.10Cerebral infarction due to embolism of unspecified precerebral artery
    I63.111Cerebral infarction due to embolism of right vertebral artery
    I63.112Cerebral infarction due to embolism of left vertebral artery
    I63.113Cerebral infarction due to embolism of bilateral vertebral arteries
    I63.119Cerebral infarction due to embolism of unspecified vertebral artery
    I63.12Cerebral infarction due to embolism of basilar artery
    I63.131Cerebral infarction due to embolism of right carotid artery
    I63.132Cerebral infarction due to embolism of left carotid artery
    I63.133Cerebral infarction due to embolism of bilateral carotid arteries

    Showing 1–20 of 91

    DRG Codes

    10 rows

    DRG CodeDescription
    023Craniotomy with Major Device Implant or Acute Complex CNS Principal Diagnosis with MCC or Antineoplastic Implant or Epilepsy with Neurostimulator
    024Craniotomy with Major Device Implant or Acute Complex CNS Principal Diagnosis without MCC
    061Ischemic Stroke, Precerebral Occlusion or Transient Ischemia with Thrombolytic Agent with MCC
    062Ischemic Stroke, Precerebral Occlusion or Transient Ischemia with Thrombolytic Agent with CC
    063Ischemic Stroke, Precerebral Occlusion or Transient Ischemia with Thrombolytic Agent without CC/MCC
    064Intracranial Hemorrhage or Cerebral Infarction with MCC
    065Intracranial Hemorrhage or Cerebral Infarction with CC or tPA in 24 Hours
    066Intracranial Hemorrhage or Cerebral Infarction without CC/MCC
    791Prematurity with Major Problems
    793Full Term Neonate with Major Problems

    Typical Clinical Scenarios

    • An older adult presents to the emergency department with sudden left-sided weakness, slurred speech, and right gaze preference that started 2 hours ago; CT head without hemorrhage and CTA show an acute right middle cerebral artery territory ischemic stroke, and thrombolytic therapy or mechanical thrombectomy is being considered. A code from this group is assigned to document the acute cerebral infarction localized to the right MCA distribution on initial hospital encounter. Typical codes: I63.331, I63.332.
    • A 72-year-old patient with atrial fibrillation on anticoagulation is seen in clinic two months after hospitalization for an ischemic stroke with residual expressive aphasia and mild hemiparesis; the visit documents ongoing deficits and secondary prevention management. A code from this group is assigned to capture the prior cerebral infarction responsible for the current chronic neurological deficits. Typical codes: I63.9.
    • A middle-aged patient admitted for carotid endarterectomy after transient ischemic events is found on perioperative imaging to have a new focal infarct in the left anterior cerebral circulation that occurred during the hospitalization and complicates surgical care; the stroke is managed as an in-hospital complication with adjustments to the perioperative plan. A code from this group is assigned to indicate the new cerebral infarction as a complication/comorbidity arising during the admission. Typical codes: I63.411, I63.412.

    Related Codes

    I60-NONTRAUMATIC-SUBARACHNOID-HEMORRHAGE

    ICD-10-CM Code For Nontraumatic Subarachnoid Hemorrhage: Group Overview

    I61-NONTRAUMATIC-INTRACEREBRAL-HEMORRHAGE

    ICD-10-CM Code For Nontraumatic Intracerebral Hemorrhage: Group Overview

    I62-OTHER-AND-UNSPECIFIED-INTRACRANIAL-HEMORRHAGE

    ICD-10-CM Code For Other And Unspecified Nontraumatic Intracranial Hemorrhage: Group Overview

    I65-OCCLUSION-AND-STENOSIS-PRECEREBRAL-ARTERIES

    ICD-10-CM Code For Occlusion And Stenosis Of Precerebral Arteries: Group Overview

    I66-OCCLUSION-AND-STENOSIS-OF-CEREBRAL-ARTERIES

    ICD-10-CM Code For Occlusion And Stenosis Of Cerebral Arteries Not Resulting In Cerebral Infarction: Group Overview

    I67-OTHER-CEREBROVASCULAR-DISEASES

    ICD-10-CM Code For Other Cerebrovascular Diseases: Group Overview

    I68-CEREBROVASCULAR-DISORDERS-IN-DISEASES-CLASSIFIED-ELSEWHERE

    ICD-10-CM Code For Cerebrovascular Disorders In Diseases Classified Elsewhere: Group Overview

    I69-SEQUELAE-OF-CEREBROVASCULAR-DISEASE

    ICD-10-CM Code For Sequelae Of Cerebrovascular Disease: Group Overview

    Frequently Asked Questions

    References

    1. 1.CPT® Codes and Descriptions. AAPC. Retrieved Aug 11, 2026.Maintains the CPT code set's official descriptions and guidelines, licensed from the American Medical Association, used as the definitional source for CPT codes on this page.
    2. 2.HCPCS Quarterly Update. Centers for Medicare & Medicaid Services (CMS). Retrieved Aug 11, 2026.CMS's quarterly release of HCPCS Level II codes and short/long descriptors, the source for HCPCS code definitions and update history.
    3. 3.ICD-10-CM Full Code List. Centers for Medicare & Medicaid Services (CMS). Retrieved Aug 11, 2026.CMS's complete ICD-10-CM diagnosis code list, used to cross-reference diagnosis codes associated with this procedure or service.
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