ICD-10-CM > G00-G99 > G10-G14 > G12 > G12.2 G12.2 Motor neuron disease Non-Billable/Non-Specific Codes G12.20Motor neuron disease, unspecifiedG12.21Amyotrophic lateral sclerosisG12.22Progressive bulbar palsyG12.23Primary lateral sclerosisG12.24Familial motor neuron diseaseG12.25Progressive spinal muscle atrophyG12.29Other motor neuron disease