2022 ICD-10-CM Code I63.23

Cerebral infarction due to unspecified occlusion or stenosis of carotid arteries

Version 2021

Not Valid for Submission

ICD-10:I63.23
Short Description:Cerebral infrc due to unsp occls or stenosis of carotid art
Long Description:Cerebral infarction due to unspecified occlusion or stenosis of carotid arteries

Code Classification

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

I63.23 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 due to unspecified occlusion or stenosis of carotid arteries. The code is not specific and is NOT valid for the year 2022 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.

Unspecified diagnosis codes like I63.23 are acceptable when clinical information is unknown or not available about a particular condition. Although a more specific code is preferable, unspecified codes should be used when such codes most accurately reflect what is known about a patient's condition. Specific diagnosis codes should not be used if not supported by the patient's medical record.

Specific Coding for Cerebral infrc due to unsp occls or stenosis of carotid art

Non-specific codes like I63.23 require more digits to indicate the appropriate level of specificity. Consider using any of the following ICD-10 codes with a higher level of specificity when coding for cerebral infrc due to unsp occls or stenosis of carotid art:

  • BILLABLE CODE - Use I63.231 for Cerebral infarction due to unspecified occlusion or stenosis of right carotid arteries
  • BILLABLE CODE - Use I63.232 for Cerebral infarction due to unspecified occlusion or stenosis of left carotid arteries
  • BILLABLE CODE - Use I63.233 for Cerebral infarction due to unspecified occlusion or stenosis of bilateral carotid arteries
  • BILLABLE CODE - Use I63.239 for Cerebral infarction due to unspecified occlusion or stenosis of unspecified carotid artery

Index to Diseases and Injuries

The Index to Diseases and Injuries is an alphabetical listing of medical terms, with each term mapped to one or more ICD-10 code(s). The following references for the code I63.23 are found in the index:

Information for Patients


Ischemic Stroke

A stroke is a medical emergency. There are two types - ischemic and hemorrhagic. Ischemic stroke is the most common type. It is usually caused by a blood clot that blocks or plugs a blood vessel in the brain. This keeps blood from flowing to the brain. Within minutes, brain cells begin to die. Another cause is stenosis, or narrowing of the artery. This can happen because of atherosclerosis, a disease in which plaque builds up inside your arteries. Transient ischemic attacks (TIAs) occur when the blood supply to the brain is interrupted briefly. Having a TIA can mean you are at risk for having a more serious stroke.

Symptoms of stroke are

It is important to treat strokes as quickly as possible. Blood thinners may be used to stop a stroke while it is happening by quickly dissolving the blood clot. Post-stroke rehabilitation can help people overcome disabilities caused by stroke damage.

NIH: National Institute of Neurological Disorders and Stroke


[Learn More in MedlinePlus]

Code History

  • 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 (First year ICD-10-CM implemented into the HIPAA code set)