G11.2 Late-onset cerebellar ataxia

The ICD-10-CM code for Late-onset cerebellar ataxia is G11.2 (FY2026). It is a billable, claim-ready diagnosis code.

Classification

Chapter

6: Diseases of the nervous system (G00-G99)

Section

G10-G14: Systemic atrophies primarily affecting the central nervous system (G10-G14)

Category G11

13 codes (11 billable)

FY2026 Status

Stable since FY2024

Also Known As

ICD-10-CM Alphabetic Index entries that lead to G11.2:

• Sanger-Brown ataxia
• Ataxia, ataxy, ataxic › Marie's (cerebellar) (heredofamilial) (late- onset)
• Ataxia, ataxy, ataxic › Sanger-Brown's (hereditary)
• Marie's › cerebellar ataxia (late-onset)
• Ataxia, ataxy, ataxic › cerebellar (hereditary) › late-onset (Marie's)

U.S. Hospital Utilization

• An estimated 65 U.S. inpatient stays in 2023 included G11.2 among the documented diagnoses.

Source: National Inpatient Sample (NIS), Healthcare Cost and Utilization Project (HCUP), Agency for Healthcare Research and Quality, 2016–2023. National survey-weighted estimates.

Official Coding Guidelines

Dominant/nondominant side (TOC entry)

a. Dominant/nondominant side ................................................................................................. 45

Pain - Category G89 (TOC entry)

b. Pain - Category G89.............................................................................................................. 45

Source: CMS — ICD-10-CM Official Guidelines for Coding and Reporting, FY2026

References

• CMS — ICD-10-CM Official Code Set and Guidelines, FY2026
• CDC/NCHS — ICD-10-CM Files and Browser Tool
• AHRQ — HCUP National Inpatient Sample, Frequencies by Diagnosis Code (2016–2023)

Cite This Page

Reference G11.2 with the canonical source and edition:

G11.2 — Late-onset cerebellar ataxia. ICD-10 Coding Pro (ICD-10-CM FY2026). https://icd10codingpro.com/codes/G11.2

Canonical URL: https://icd10codingpro.com/codes/G11.2