2022 ICD-10-CM Code G11.2

Late-onset cerebellar ataxia

Version 2021

Valid for Submission

ICD-10:G11.2
Short Description:Late-onset cerebellar ataxia
Long Description:Late-onset cerebellar ataxia

Code Classification

  • Diseases of the nervous system (G00–G99)
    • Systemic atrophies primarily affecting the central nervous system (G10-G14)
      • Hereditary ataxia (G11)

G11.2 is a billable diagnosis code used to specify a medical diagnosis of late-onset cerebellar ataxia. The code G11.2 is valid during the fiscal year 2022 from October 01, 2021 through September 30, 2022 for the submission of HIPAA-covered transactions.

The ICD-10-CM code G11.2 might also be used to specify conditions or terms like adult-onset autosomal recessive cerebellar ataxia, autosomal recessive cerebellar ataxia, psychomotor delay syndrome, azorean disease, azorean disease, type i, azorean disease, type ii , azorean disease, type iii, etc.

The code G11.2 is applicable to adult patients aged 15 through 124 years inclusive. It is clinically and virtually impossible to use this code on a patient outside the stated age range.

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 G11.2 are found in the index:

Code Edits

The Medicare Code Editor (MCE) detects and reports errors in the coding of claims data. The following ICD-10 Code Edits are applicable to this code:

Approximate Synonyms

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

Clinical Information

Convert G11.2 to ICD-9 Code

The General Equivalency Mapping (GEM) crosswalk indicates an approximate mapping between the ICD-10 code G11.2 its ICD-9 equivalent. The approximate mapping means there is not an exact match between the ICD-10 code and the ICD-9 code and the mapped code is not a precise representation of the original code.

Information for Patients


Cerebellar Disorders

When you play the piano or hit a tennis ball you are activating the cerebellum. The cerebellum is the area of the brain that controls coordination and balance. Problems with the cerebellum include

Treatment of cerebellar disorders depends on the cause. In some cases, there is no cure but treatment may help with symptoms.

NIH: National Institute of Neurological Disorders and Stroke


[Learn More in MedlinePlus]

Movement Disorders

Movement disorders are neurologic conditions that cause problems with movement, such as

There are many different movement disorders. Some of the more common types include

Causes of movement disorders include

Treatment varies by disorder. Medicines can cure some disorders. Others get better when an underlying disease is treated. Often, however, there is no cure. In that case, the goal of treatment is to improve symptoms and relieve pain.


[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)