G10-G14 — Systemic atrophies primarily affecting the central nervous system
Every ICD-10-CM code in this range and the PDGM clinical group CMS assigns to it, read from the CMS grouper crosswalk v07.1.26.
Codes in range
28
No clinical group
4
A period cannot be grouped from these.
Barred as primary
0
CMS rejects these in the primary position.
Where these codes group
24 of the 28 codes in G10-G14 group to Neuro Rehabilitation. A further 4 are assigned no clinical group at all, which means a 30-day period cannot be grouped from them.
Every code in G10-G14
Descriptions are CMS’s own, abbreviated as CMS abbreviates them.
| Code | Description | Clinical group | Primary position |
|---|---|---|---|
| G10 | Huntington's disease | B | Accepted |
| G110 | Congenital nonprogressive ataxia | B | Accepted |
| G1110 | Early-onset cerebellar ataxia, unspecified | B | Accepted |
| G1111 | Friedreich ataxia | B | Accepted |
| G1119 | Other early-onset cerebellar ataxia | B | Accepted |
| G112 | Late-onset cerebellar ataxia | B | Accepted |
| G113 | Cerebellar ataxia with defective DNA repair | B | Accepted |
| G114 | Hereditary spastic paraplegia | B | Accepted |
| G115 | Hypomyelination - hypogonadotropic hypogonadism - hypodontia | B | Accepted |
| G116 | Leukodystrophy with vanishing white matter disease | B | Accepted |
| G118 | Other hereditary ataxias | B | Accepted |
| G119 | Hereditary ataxia, unspecified | B | Accepted |
| G120 | Infantile spinal muscular atrophy, type I [Werdnig-Hoffman] | B | Accepted |
| G121 | Other inherited spinal muscular atrophy | B | Accepted |
| G1220 | Motor neuron disease, unspecified | B | Accepted |
| G1221 | Amyotrophic lateral sclerosis | B | Accepted |
| G1222 | Progressive bulbar palsy | B | Accepted |
| G1223 | Primary lateral sclerosis | B | Accepted |
| G1224 | Familial motor neuron disease | B | Accepted |
| G1225 | Progressive spinal muscle atrophy | B | Accepted |
| G1229 | Other motor neuron disease | B | Accepted |
| G128 | Other spinal muscular atrophies and related syndromes | B | Accepted |
| G129 | Spinal muscular atrophy, unspecified | B | Accepted |
| G130 | Paraneoplastic neuromyopathy and neuropathy | None | Cannot group |
| G131 | Oth systemic atrophy aff cnsl in neoplastic disease | None | Cannot group |
| G132 | Systemic atrophy primarily affecting the cnsl in myxedema | None | Cannot group |
| G138 | Systemic atrophy aff cnsl in oth diseases classd elswhr | None | Cannot group |
| G14 | Postpolio syndrome | B | Accepted |
Source: CMS HH PPS Grouper Software v07.1.26, effective 2026-04-01. 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.
The monthly home health regs digest
What CMS changed, what's due next, and what to do about it — one email a month, no fluff.