ICD-10 · PDGM grouping
G11 Hereditary ataxia
All 11 codes in the G11 family, with the PDGM clinical group, comorbidity subgroup and primary-position rule CMS assigns, read from the CMS grouper crosswalk v07.2.26 and the CDC FY2027 code file.
Codes in family
11
Can lead a claim
11
Cannot lead a claim
0
What CMS assigns to G11
All 11 codes group to Neuro Rehabilitation. 1 of the 11 counts toward the Demyelinating Diseases of the Central Nervous System comorbidity subgroup; 10 are assigned none. Every code can lead a claim.
- Demyelinating Diseases of the Central Nervous System
Every code in G11
Descriptions are CDC’s FY2027 wording; where CMS’s grouper abbreviates one, its form is shown beneath.
| Code | Description | Primary position | Clinical group | Comorbidity subgroup |
|---|---|---|---|---|
| G11.0 | Congenital nonprogressive ataxia | Can lead a claim | B | None |
| G11.1 Early-onset cerebellar ataxia | ||||
| G11.10 | Early-onset cerebellar ataxia, unspecified | Can lead a claim | B | None |
| G11.11 | Friedreich ataxia | Can lead a claim | B | None |
| G11.19 | Other early-onset cerebellar ataxia | Can lead a claim | B | None |
| G11.2 | Late-onset cerebellar ataxia | Can lead a claim | B | None |
| G11.3 | Cerebellar ataxia with defective DNA repair | Can lead a claim | B | None |
| G11.4 | Hereditary spastic paraplegia | Can lead a claim | B | None |
| G11.5 | Hypomyelination - hypogonadotropic hypogonadism - hypodontia | Can lead a claim | B | None |
| G11.6 | Leukodystrophy with vanishing white matter disease | Can lead a claim | B | Demyelinating Diseases of the Central Nervous System |
| G11.8 | Other hereditary ataxias | Can lead a claim | B | None |
| G11.9 | Hereditary ataxia, unspecified | Can lead a claim | B | None |
Sources: CMS HH PPS Grouper Software v07.2.26, effective 2026-10-01, for the clinical group, comorbidity subgroup, code-first conventions and primary-position flags; CDC NCHS ICD-10-CM FY2027 code descriptions for the family title and code wording. This is the crosswalk Medicare runs a claim through. Grouping also depends on admission source, timing, the OASIS functional items and the rest of the diagnosis list.
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