Free Medical Coding > ICD10 CM > 2024 ICD-10-CM Codes > 2024 ICD-10-CM Codes G00-G99 – Diseases of the nervous system (G00-G99) > 2024 ICD-10-CM Codes G10-G14 – Systemic atrophies primarily affecting the central nervous system (G10-G14) > 2024 ICD-10-CM Codes G12 – Spinal muscular atrophy and related syndromes (G12) > 2024 ICD-10-CM Codes G12.2 – Motor neuron disease (G12.2)