G12.9 SPINAL MUSCULAR ATROPHY, UNSPECIFIED

Code Information

Diagnosis Code: G12.9
Short Description: Spinal muscular atrophy, unspecified
Long Description: Spinal muscular atrophy, unspecified
Code Version: 2025 ICD-10-CM

The code G12.9 is VALID for claim submission

Code Classification

Diseases of the nervous system (G00–G99)
- Systemic atrophies primarily affecting the central nervous system (G10-G14)
  - Spinal muscular atrophy and related syndromes (G12)

Synonyms

Autosomal dominant distal hereditary motor neuropathy
Distal hereditary motor neuropathy type 1
Distal spinal muscular atrophy
Proximal spinal muscular atrophy
Segmental spinal muscular atrophy
Spinal muscular atrophy
Spinal muscular atrophy with progressive myoclonic epilepsy

Crosswalk Information

ICD-10 Code		ICD-9 Code	ICD-9 Description
G12.9		335.10	Spinal muscl atrophy NOS
G12.9		335.9	Ant horn cell dis NOS

This ICD-10 to ICD-9 data is based on the 2018 General Equivalency Mapping (GEM) files published by the Centers for Medicare & Medicaid Services (CMS) for informational purposes only. The data is not an ICD-10 conversion tool and doesn’t guarantee clinical accuracy.

Similar Codes

ICD-10 Code	ICD-10 Description
G12	Spinal muscular atrophy and related syndromes
G12.0	Infantile spinal muscular atrophy, type I [Werdnig-Hoffman]
G12.1	Other inherited spinal muscular atrophy
G12.2	Motor neuron disease
G12.20	Motor neuron disease, unspecified
G12.21	Amyotrophic lateral sclerosis
G12.22	Progressive bulbar palsy
G12.23	Primary lateral sclerosis
G12.24	Familial motor neuron disease
G12.25	Progressive spinal muscle atrophy
G12.29	Other motor neuron disease
G12.8	Other spinal muscular atrophies and related syndromes

This page was last updated on: 10/1/2025

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