ICD-10-CM-2023: F94.0 Selective mutism

F90-F98	Behavioral and emotional disorders with onset usually occurring in childhood and adolescence
	Info:	Codes within categories F90-F98 may be used regardless of the age of a patient. These disorders generally have onset within the childhood or adolescent years, but may continue throughout life or not be diagnosed until adulthood
F94	Disorders of social functioning with onset specific to childhood and adolescence
F94.0	Selective mutism
	Info:	Elective mutism
	Excl2.:	pervasive developmental disorders (F84.-) schizophrenia (F20.-) specific developmental disorders of speech and language (F80.-) transient mutism as part of separation anxiety in young children (F93.0)
F94.1	Reactive attachment disorder of childhood
	Use add'l	code to identify any associated failure to thrive or growth retardation
	Excl1.:	disinhibited attachment disorder of childhood (F94.2) normal variation in pattern of selective attachment
	Excl2.:	Asperger's syndrome (F84.5) maltreatment syndromes (T74.-) sexual or physical abuse in childhood, resulting in psychosocial problems (Z62.81-)
F94.2	Disinhibited attachment disorder of childhood
	Info:	Affectionless psychopathy Institutional syndrome
	Excl1.:	reactive attachment disorder of childhood (F94.1)
	Excl2.:	Asperger's syndrome (F84.5) attention-deficit hyperactivity disorders (F90.-) hospitalism in children (F43.2-)
F94.8	Other childhood disorders of social functioning
F94.9	Childhood disorder of social functioning, unspecified

and

Disorders of social functioning with onset specific to childhood and adolescence