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  6. 2024 ICD-10-CM Code I66.3

2024 ICD-10-CM Diagnosis Code I66.3

Occlusion and stenosis of cerebellar arteries

ICD-10-CM Code:
I66.3
ICD-10 Code for:
Occlusion and stenosis of cerebellar arteries
Is Billable?
Yes - Valid for Submission
Chronic Condition Indicator: [1]
Chronic
Code Navigator:

Code Classification

  • Diseases of the circulatory system
    (I00–I99)
    • Cerebrovascular diseases
      (I60-I69)
      • Occlusion and stenosis of cerebral arteries, not resulting in cerebral infarction
        (I66)

I66.3 is a billable diagnosis code used to specify a medical diagnosis of occlusion and stenosis of cerebellar arteries. The code is valid during the current fiscal year for the submission of HIPAA-covered transactions from October 01, 2023 through September 30, 2024.

Approximate Synonyms

The following clinical terms are approximate synonyms or lay terms that might be used to identify the correct diagnosis code:

  • Anterior inferior cerebellar artery embolism
  • Bilateral embolism of cerebellar arteries
  • Cerebellar artery embolism
  • Cerebellar artery occlusion
  • Cerebellar artery thrombosis
  • Embolus of left cerebellar artery
  • Embolus of right cerebellar artery
  • Left cerebellar artery thrombosis
  • Occlusion and stenosis of cerebellar arteries
  • Occlusion of bilateral cerebellar arteries
  • Occlusion of left cerebellar artery
  • Occlusion of left cerebellar artery by embolus
  • Occlusion of right cerebellar artery
  • Occlusion of right cerebellar artery by embolus
  • Occlusion of superior cerebellar artery
  • Occlusive thrombus of left cerebellar artery
  • Posterior inferior cerebellar artery embolism
  • Right cerebellar artery thrombosis
  • Stenosis of left cerebellar artery
  • Stenosis of right cerebellar artery
  • Superior cerebellar artery embolism
  • Thrombosis of superior cerebellar artery

Clinical Classification

Index to Diseases and Injuries References

The following annotation back-references for this diagnosis code are found in the injuries and diseases index. The Index to Diseases and Injuries is an alphabetical listing of medical terms, with each term mapped to one or more ICD-10-CM code(s).

Convert I66.3 to ICD-9-CM

  • ICD-9-CM Code: 434.00 - Crbl thrmbs wo infrct
    Approximate Flag - The approximate mapping means there is not an exact match between the ICD-10 and ICD-9 codes and the mapped code is not a precise representation of the original code.
  • ICD-9-CM Code: 434.10 - Crbl emblsm wo infrct
    Approximate Flag - The approximate mapping means there is not an exact match between the ICD-10 and ICD-9 codes and the mapped code is not a precise representation of the original code.
  • ICD-9-CM Code: 434.90 - Crbl art oc NOS wo infrc
    Approximate Flag - The approximate mapping means there is not an exact match between the ICD-10 and ICD-9 codes and the mapped code is not a precise representation of the original code.

Patient Education


Brain Diseases

Your brain is the control center of your body. It controls your thoughts, memory, speech, and movement. It regulates the function of many organs. It's part of your nervous system, which also includes your spinal cord and peripheral nerves. The nervous system sends signals between your brain and the rest of the body. Your nerves take in information from your senses and send it to the brain to be processed. Your brain and nerves also communicate to help you move and to control your body's functions.

When the brain is healthy, it works quickly and automatically. But when you have a brain disease, it may affect how well you can function and do your daily activities. Some common brain diseases include:

  • Brain tumors, which can press on nerves and affect brain function.
  • Degenerative nerve diseases, which can affect many of your body's activities, such as balance, movement, talking, breathing, and heart function. Types include Alzheimer's disease and Parkinson's disease.
  • Encephalitis (inflammation in the brain), which can lead to problems such as vision loss, weakness, and paralysis.
  • Genetic brain disorders, which are caused by changes in genes (also called variants or mutations). These disorders can affect the development and function of the brain.
  • Strokes, which can cause a loss of brain cells and can affect your ability to think clearly.
  • Traumatic brain injuries (TBIs), which can affect brain function. They may range from mild to severe. The effects of a TBI may be temporary or permanent.

The symptoms of brain diseases vary widely, depending on the specific problem. In some cases, damage is permanent. In other cases, treatments such as surgery, medicines, or therapies such as physical, occupational, and speech therapies, may cure the disease or improve the symptoms.


[Learn More in MedlinePlus]

Code History

  • 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.

Footnotes

[1] Chronic - a chronic condition code indicates a condition lasting 12 months or longer and its effect on the patient based on one or both of the following criteria:

  • The condition results in the need for ongoing intervention with medical products,treatment, services, and special equipment
  • The condition places limitations on self-care, independent living, and social interactions.