Version 2024
Replaced Code

2024 ICD-10-CM Diagnosis Code G23.8

Other specified degenerative diseases of basal ganglia

Short Description:
Other specified degenerative diseases of basal ganglia
Is Billable?
Yes - Valid for Submission
Code Navigator:

Code Classification

  • Diseases of the nervous system
    • Extrapyramidal and movement disorders
      • Other degenerative diseases of basal ganglia

G23.8 is a billable diagnosis code used to specify a medical diagnosis of other specified degenerative diseases of basal ganglia. 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:

  • Aicardi Goutieres syndrome
  • Aicardi Goutieres syndrome type 1
  • Aicardi Goutieres syndrome type 2
  • Aicardi Goutieres syndrome type 3
  • Aicardi Goutieres syndrome type 4
  • Aicardi Goutieres syndrome type 5
  • Atypical pantothenate kinase associated neurodegeneration
  • Autosomal dominant late onset basal ganglia degeneration
  • Basal ganglia degeneration with calcification
  • Calcification of basal ganglia
  • Cerebral degeneration in childhood
  • Childhood-onset basal ganglia degeneration syndrome
  • Chorea due to metabolic disorder
  • Chorea due to neuroferritinopathy
  • Classical pantothenate kinase associated neurodegeneration
  • Fahr's syndrome
  • Juvenile paralysis agitans of Hunt
  • Neuroferritinopathy
  • Neurological disorder due to excess intake of micronutrients
  • Olivopontocerebellar atrophy with blindness
  • Olivopontocerebellar atrophy with slow eye movement
  • Olivopontocerebellar degeneration
  • Olivopontocerebellar degeneration
  • Olivopontocerebellar degeneration
  • Pallidal degeneration
  • Pallidal degeneration
  • Pallidal degeneration
  • Pallidoluysian degeneration
  • Pallidonigrospinal degeneration
  • Parkinsonism with calcification of basal ganglia
  • Pigmentary pallidal degeneration
  • Pigmentary pallidal degeneration
  • Spondyloenchondromatosis
  • Spondyloenchondromatosis with basal ganglia calcification
  • Sporadic olivopontocerebellar atrophy

Replaced Code

This code was replaced in the 2024 ICD-10-CM code set with the code(s) listed below. The National Center for Health Statistics (NCHS) has published an update to the ICD-10-CM diagnosis codes which became effective October 1, 2023. This code was replaced for the FY 2024 (October 1, 2023 - September 30, 2024).

  • G23.3 - Hypomyelination with atrophy of basal ganglia and cerebellum

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.

Inclusion Terms

Inclusion Terms
These terms are the conditions for which that code is to be used. The terms may be synonyms of the code title, or, in the case of "other specified" codes, the terms are a list of the various conditions assigned to that code. The inclusion terms are not necessarily exhaustive. Additional terms found only in the Alphabetic Index may also be assigned to a code.
  • Calcification of basal ganglia

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 to ICD-9-CM Code

Source ICD-10-CM CodeTarget ICD-9-CM Code
G23.8333.0 - Degen basal ganglia NEC
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.

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.