ICD-10-CM-2023: G13.2 Systemic atrophy primarily affecting the central nervous system in myxedema

G10-G14	Systemic atrophies primarily affecting the central nervous system
G13	Systemic atrophies primarily affecting central nervous system in diseases classified elsewhere
G13.0	Paraneoplastic neuromyopathy and neuropathy
	Info:	Carcinomatous neuromyopathy Sensorial paraneoplastic neuropathy [Denny Brown]
	Code first	underlying neoplasm (C00-D49)
G13.1	Other systemic atrophy primarily affecting central nervous system in neoplastic disease
	Info:	Paraneoplastic limbic encephalopathy
	Code first	underlying neoplasm (C00-D49)
G13.2	Systemic atrophy primarily affecting the central nervous system in myxedema
	Code first	underlying disease, such as: hypothyroidism (E03.-) myxedematous congenital iodine deficiency (E00.1)
G13.8	Systemic atrophy primarily affecting central nervous system in other diseases classified elsewhere
	Code first	underlying disease

and

Systemic atrophies primarily affecting central nervous system in diseases classified elsewhere