G11

Non-Billable
ChapterG00–G99
Rankcategory
Official Description

Hereditary ataxia

Metadata & Insights
  • Non-billable category (requires more specific sub-code).
  • Chapter 6: Diseases of the Nervous System (G00-G99).

CH6 Parent Instructions

Excludes2(Not included here. Code separately if applicable.)
  • certain conditions originating in the perinatal period (P04-P96)
  • certain infectious and parasitic diseases (A00-B99)
  • complications of pregnancy, childbirth and the puerperium (O00-O9A)
  • congenital malformations, deformations, and chromosomal abnormalities (Q00-Q99)
  • endocrine, nutritional and metabolic diseases (E00-E88)
  • injury, poisoning and certain other consequences of external causes (S00-T88)
  • neoplasms (C00-D49)
  • symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R94)

Instructional Notes

Excludes2(Not included here. Code separately if applicable.)
  • cerebral palsy (G80.-)
  • hereditary and idiopathic neuropathy (G60.-)
  • metabolic disorders (E70-E88)

Clinical Hierarchy

BillableHas subcodes
CH6Diseases of the nervous system (G00-G99)
G10-G14Systemic atrophies primarily affecting the central nervous system (G10-G14)
G11Hereditary ataxiaNot billable
G11.0Congenital nonprogressive ataxiaBillable
G11.1Early-onset cerebellar ataxiaSubcodes
G11.2Late-onset cerebellar ataxiaBillable
G11.3Cerebellar ataxia with defective DNA repairBillable
G11.4Hereditary spastic paraplegiaBillable
G11.5Hypomyelination - hypogonadotropic hypogonadism - hypodontiaBillable
G11.6Leukodystrophy with vanishing white matter diseaseBillable
G11.8Other hereditary ataxiasBillable
G11.9Hereditary ataxia, unspecifiedBillable

Applicable Ancestor Context

The following parent sections contain instructions or notes that apply to G11:

chapterCH6
Diseases of the nervous system (G00-G99)
View context instructions

MS-DRG Classification

2026

No direct MS-DRG triggers identified.

Cross Reference

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