ICD-10-CM > G00-G99 > G70-G73 > G71 > G71.2 G71.2 Congenital myopathies Non-Billable/Non-Specific Type 2 Excludes arthrogryposis multiplex congenita (Q74.3) Codes G71.20Congenital myopathy, unspecifiedG71.21Nemaline myopathyG71.22Centronuclear myopathyG71.220X-linked myotubular myopathyG71.228Other centronuclear myopathyG71.29Other congenital myopathy