1. Home
  2. ICD-10-CM Codes
  3. I00–I99
  4. I60-I69
  5. I63
  6. 2026 ICD-10-CM Code I63

2026 ICD-10-CM Diagnosis Code I63

Cerebral infarction

ICD-10-CM Code:
I63
ICD-10 Code for:
Cerebral infarction
Is Billable?
Not Valid for Submission
Code Navigator:

I63 is a non-specific and non-billable diagnosis code code, consider using a code with a higher level of specificity for a diagnosis of cerebral infarction. The code is not specific and is NOT valid for the year 2026 for the submission of HIPAA-covered transactions. Category or Header define the heading of a category of codes that may be further subdivided by the use of 4th, 5th, 6th or 7th characters.

Specific Coding Applicable to Cerebral infarction

Non-specific codes like I63 require more digits to indicate the appropriate level of specificity. Consider using any of the following ICD-10-CM codes with a higher level of specificity when coding for cerebral infarction:

  • I63.0 for Cerebral infarction due to thrombosis of precerebral arteries - NON-BILLABLE CODE

  • Use I63.00 for Cerebral infarction due to thrombosis of unspecified precerebral artery - BILLABLE CODE

  • I63.01 for Cerebral infarction due to thrombosis of vertebral artery - NON-BILLABLE CODE

  • Use I63.02 for Cerebral infarction due to thrombosis of basilar artery - BILLABLE CODE

  • I63.03 for Cerebral infarction due to thrombosis of carotid artery - NON-BILLABLE CODE

  • Use I63.09 for Cerebral infarction due to thrombosis of other precerebral artery - BILLABLE CODE

  • I63.1 for Cerebral infarction due to embolism of precerebral arteries - NON-BILLABLE CODE

  • Use I63.10 for Cerebral infarction due to embolism of unspecified precerebral artery - BILLABLE CODE

  • I63.11 for Cerebral infarction due to embolism of vertebral artery - NON-BILLABLE CODE

  • Use I63.12 for Cerebral infarction due to embolism of basilar artery - BILLABLE CODE

  • I63.13 for Cerebral infarction due to embolism of carotid artery - NON-BILLABLE CODE

  • Use I63.19 for Cerebral infarction due to embolism of other precerebral artery - BILLABLE CODE

  • I63.2 for Cerebral infarction due to unspecified occlusion or stenosis of precerebral arteries - NON-BILLABLE CODE

  • Use I63.20 for Cerebral infarction due to unspecified occlusion or stenosis of unspecified precerebral arteries - BILLABLE CODE

  • I63.21 for Cerebral infarction due to unspecified occlusion or stenosis of vertebral arteries - NON-BILLABLE CODE

  • Use I63.22 for Cerebral infarction due to unspecified occlusion or stenosis of basilar artery - BILLABLE CODE

  • I63.23 for Cerebral infarction due to unspecified occlusion or stenosis of carotid arteries - NON-BILLABLE CODE

  • Use I63.29 for Cerebral infarction due to unspecified occlusion or stenosis of other precerebral arteries - BILLABLE CODE

  • I63.3 for Cerebral infarction due to thrombosis of cerebral arteries - NON-BILLABLE CODE

  • Use I63.30 for Cerebral infarction due to thrombosis of unspecified cerebral artery - BILLABLE CODE

  • I63.31 for Cerebral infarction due to thrombosis of middle cerebral artery - NON-BILLABLE CODE

  • I63.32 for Cerebral infarction due to thrombosis of anterior cerebral artery - NON-BILLABLE CODE

  • I63.33 for Cerebral infarction due to thrombosis of posterior cerebral artery - NON-BILLABLE CODE

  • I63.34 for Cerebral infarction due to thrombosis of cerebellar artery - NON-BILLABLE CODE

  • Use I63.39 for Cerebral infarction due to thrombosis of other cerebral artery - BILLABLE CODE

  • I63.4 for Cerebral infarction due to embolism of cerebral arteries - NON-BILLABLE CODE

  • Use I63.40 for Cerebral infarction due to embolism of unspecified cerebral artery - BILLABLE CODE

  • I63.41 for Cerebral infarction due to embolism of middle cerebral artery - NON-BILLABLE CODE

  • I63.42 for Cerebral infarction due to embolism of anterior cerebral artery - NON-BILLABLE CODE

  • I63.43 for Cerebral infarction due to embolism of posterior cerebral artery - NON-BILLABLE CODE

  • I63.44 for Cerebral infarction due to embolism of cerebellar artery - NON-BILLABLE CODE

  • Use I63.49 for Cerebral infarction due to embolism of other cerebral artery - BILLABLE CODE

  • I63.5 for Cerebral infarction due to unspecified occlusion or stenosis of cerebral arteries - NON-BILLABLE CODE

  • Use I63.50 for Cerebral infarction due to unspecified occlusion or stenosis of unspecified cerebral artery - BILLABLE CODE

  • I63.51 for Cerebral infarction due to unspecified occlusion or stenosis of middle cerebral artery - NON-BILLABLE CODE

  • I63.52 for Cerebral infarction due to unspecified occlusion or stenosis of anterior cerebral artery - NON-BILLABLE CODE

  • I63.53 for Cerebral infarction due to unspecified occlusion or stenosis of posterior cerebral artery - NON-BILLABLE CODE

  • I63.54 for Cerebral infarction due to unspecified occlusion or stenosis of cerebellar artery - NON-BILLABLE CODE

  • Use I63.59 for Cerebral infarction due to unspecified occlusion or stenosis of other cerebral artery - BILLABLE CODE

  • Use I63.6 for Cerebral infarction due to cerebral venous thrombosis, nonpyogenic - BILLABLE CODE

  • I63.8 for Other cerebral infarction - NON-BILLABLE CODE

  • Use I63.81 for Other cerebral infarction due to occlusion or stenosis of small artery - BILLABLE CODE

  • Use I63.89 for Other cerebral infarction - BILLABLE CODE

  • Use I63.9 for Cerebral infarction, unspecified - BILLABLE CODE

Code Classification

  • Diseases of the circulatory system
    I00–I99
    • Cerebrovascular diseases
      I60-I69
      • Cerebral infarction
        I63

Clinical Information

  • Cerebral Infarction

    the formation of an area of necrosis in the cerebrum caused by an insufficiency of arterial or venous blood flow. infarcts of the cerebrum are generally classified by hemisphere (i.e., left vs. right), lobe (e.g., frontal lobe infarction), arterial distribution (e.g., infarction, anterior cerebral artery), and etiology (e.g., embolic infarction).

  • Infarction, Middle Cerebral Artery

    necrosis occurring in the middle cerebral artery distribution system which brings blood to the entire lateral aspects of each cerebral hemisphere. clinical signs include impaired cognition; aphasia; agraphia; weak and numbness in the face and arms, contralaterally or bilaterally depending on the infarction.

Tabular List of Diseases and Injuries

The following annotation back-references are applicable to this diagnosis code. The Tabular List of Diseases and Injuries is a list of ICD-10-CM codes, organized "head to toe" into chapters and sections with coding notes and guidance for inclusions, exclusions, descriptions and more.


Includes

Includes
This note appears immediately under a three character code title to further define, or give examples of, the content of the category.
  • occlusion and stenosis of cerebral and precerebral arteries, resulting in cerebral infarction

Use Additional Code

Use Additional Code
The “use additional code” indicates that a secondary code could be used to further specify the patient’s condition. This note is not mandatory and is only used if enough information is available to assign an 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

Type 1 Excludes

Type 1 Excludes
A type 1 excludes note is a pure excludes note. It means "NOT CODED HERE!" An Excludes1 note indicates that the code excluded should never be used at the same time as the code above the Excludes1 note. An Excludes1 is used when two conditions cannot occur together, such as a congenital form versus an acquired form of the same condition.
  • neonatal cerebral infarction P91.82

Type 2 Excludes

Type 2 Excludes
A type 2 excludes note represents "Not included here". An excludes2 note indicates that the condition excluded is not part of the condition represented by the code, but a patient may have both conditions at the same time. When an Excludes2 note appears under a code, it is acceptable to use both the code and the excluded code together, when appropriate.
  • chronic, without residual deficits sequelae Z86.73
  • sequelae of cerebral infarction I69.3

Patient Education


Ischemic Stroke

What is an ischemic stroke?

A stroke happens when there is a loss of blood flow to part of the brain. Your brain cells cannot get the oxygen and nutrients they need from blood, and they start to die within a few minutes. This can cause lasting brain damage, long-term disability, or even death.

There are two main types of strokes, ischemic and hemorrhagic. Ischemic stroke is the more common type. An ischemic stroke happens when a blood clot blocks a blood vessel in the brain. Quick treatment can save a life and improve the chances of recovery.

What causes an ischemic stroke?

Ischemic strokes are usually caused by one or more of the following:

  • A blood clot. A clot can form in an artery that supplies the brain (thrombosis), or it can travel from another part of the body (embolism).
  • Atherosclerosis. A disease in which plaque, a sticky substance made up of cholesterol, fat, and other substances, builds up inside your arteries.
  • Irregular heart rhythms. Conditions like atrial fibrillation can cause clots to form in the heart, which may travel to the brain.
  • Other heart and blood conditions. Such as heart valve diseases or sickle cell disease.

A transient ischemic attack (TIA) is caused by a brief blockage of blood flow to the brain. It usually lasts a few minutes. Having a TIA can mean you are at risk for having a more serious stroke.

What are the symptoms of ischemic stroke?

Symptoms of stroke often happen suddenly. They include:

  • Sudden numbness or weakness of the face, arm or leg (especially on one side of the body)
  • Sudden confusion, trouble speaking or understanding speech
  • Sudden trouble seeing in one or both eyes
  • Sudden trouble walking, dizziness, loss of balance or coordination
  • Sudden severe headache with no known cause

If you think someone is having a stroke, the F.A.S.T. test can help you remember what to look for. Think "FAST" and look for:

  • Face drooping on one side when smiling.
  • Arm weakness that occurs when the arms are raised, and one arm drifts downward.
  • Speech is slurred or strange.
  • Time to call 911.

How is an ischemic stroke diagnosed?

To make a diagnosis, your health care provider may do a physical exam, ask about your symptoms and medical history, and use imaging tests. Other heart tests may be done to help find the cause of the stroke.

How is an ischemic stroke treated?

It is important to treat strokes as quickly as possible. The most common treatments include:

  • Medicines such as blood thinners or thrombolytics (which break up and dissolve existing clots) may be used to prevent or treat ischemic stroke.
  • Surgery or stenting may be used to open narrowed arteries or remove plaque build-up from the carotid arteries, which supply blood to the brain.

After treatment, rehabilitation can help you regain lost skills and independence. Your provider may also order other medicines to manage your blood pressure,cholesterol, or other health problems such as diabetes that may increase your risk for stroke.

Can an ischemic stroke be prevented?

The best way to prevent stroke is by making heart-healthy lifestyle changes to lower your risk. If lifestyle changes aren't enough, your provider may prescribe medicine to help manage your risk factors.

NIH: National Institute of Neurological Disorders and Stroke


[Learn More in MedlinePlus]

Code History

  • FY 2026 - No Change, effective from 10/1/2025 through 9/30/2026
  • FY 2025 - No Change, effective from 10/1/2024 through 9/30/2025
  • FY 2024 - No Change, effective from 10/1/2023 through 9/30/2024
  • FY 2023 - No Change, effective from 10/1/2022 through 9/30/2023
  • FY 2022 - No Change, effective from 10/1/2021 through 9/30/2022
  • FY 2021 - No Change, effective from 10/1/2020 through 9/30/2021
  • FY 2020 - No Change, effective from 10/1/2019 through 9/30/2020
  • FY 2019 - No Change, effective from 10/1/2018 through 9/30/2019
  • FY 2018 - No Change, effective from 10/1/2017 through 9/30/2018
  • FY 2017 - No Change, effective from 10/1/2016 through 9/30/2017
  • FY 2016 - New Code, effective from 10/1/2015 through 9/30/2016. This was the first year ICD-10-CM was implemented into the HIPAA code set.