G13 - Systemic atrophies primarily affecting central nervous system in diseases classified elsewhere
G13.0 - Paraneoplastic neuromyopathy and neuropathy
G13.1 - Other systemic atrophy primarily affecting central nervous system in neoplastic disease
G13.2 - Systemic atrophy primarily affecting the central nervous system in myxedema
G13.8 - Systemic atrophy primarily affecting central nervous system in other diseases classified elsewhere