G12: Spinal muscular atrophy and related syndromes
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

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