ICD-10-CM Code G23

Other degenerative diseases of basal ganglia

Version 2021 Non-Billable Code

Not Valid for Submission

G23 is a "header" nonspecific and non-billable code code, consider using a code with a higher level of specificity for a diagnosis of other degenerative diseases of basal ganglia. The code is NOT valid for the year 2021 for the submission of HIPAA-covered transactions.

ICD-10:G23
Short Description:Other degenerative diseases of basal ganglia
Long Description:Other degenerative diseases of basal ganglia

Consider the following ICD-10 codes with a higher level of specificity:

  • G23.0 - Hallervorden-Spatz disease
  • G23.1 - Progressive supranuclear ophthalmoplegia [Steele-Richardson-Olszewski]
  • G23.2 - Striatonigral degeneration
  • G23.8 - Other specified degenerative diseases of basal ganglia
  • G23.9 - Degenerative disease of basal ganglia, unspecified

Tabular List of Diseases and Injuries

The Tabular List of Diseases and Injuries is a list of ICD-10 codes, organized "head to toe" into chapters and sections with guidance for inclusions, exclusions, descriptions and more. The following references are applicable to the code G23:

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.
  • multi-system degeneration of the autonomic nervous system G90.3

Code Classification

  • Diseases of the nervous system (G00–G99)
    • Extrapyramidal and movement disorders (G20-G26)
      • Other degenerative diseases of basal ganglia (G23)

Code History

  • FY 2016 - New Code, effective from 10/1/2015 through 9/30/2016
    (First year ICD-10-CM implemented into the HIPAA code set)
  • FY 2017 - No Change, effective from 10/1/2016 through 9/30/2017
  • FY 2018 - No Change, effective from 10/1/2017 through 9/30/2018
  • FY 2019 - No Change, effective from 10/1/2018 through 9/30/2019
  • FY 2020 - No Change, effective from 10/1/2019 through 9/30/2020
  • FY 2021 - No Change, effective from 10/1/2020 through 9/30/2021

Information for Patients


Brain Diseases

The brain is the control center of the body. It controls thoughts, memory, speech, and movement. It regulates the function of many organs. When the brain is healthy, it works quickly and automatically. However, when problems occur, the results can be devastating.

Inflammation in the brain can lead to problems such as vision loss, weakness and paralysis. Loss of brain cells, which happens if you suffer a stroke, can affect your ability to think clearly. Brain tumors can also press on nerves and affect brain function. Some brain diseases are genetic. And we do not know what causes some brain diseases, such as Alzheimer's disease.

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 physical therapy can correct the source of the problem or improve symptoms.

  • Basal ganglia dysfunction (Medical Encyclopedia)
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  • Brain surgery (Medical Encyclopedia)
  • Central pontine myelinolysis (Medical Encyclopedia)
  • Cerebral spinal fluid (CSF) collection (Medical Encyclopedia)
  • EEG (Medical Encyclopedia)
  • Hepatic encephalopathy (Medical Encyclopedia)
  • Pseudotumor cerebri (Medical Encyclopedia)
  • Wernicke-Korsakoff syndrome (Medical Encyclopedia)

[Learn More]