ICD-10-CM > F01-F99 > F90-F98 > F94 F94 Disorders of social functioning with onset specific to childhood and adolescence Non-Billable/Non-Specific Codes F94.0Selective mutismF94.1Reactive attachment disorder of childhoodF94.2Disinhibited attachment disorder of childhoodF94.8Other childhood disorders of social functioningF94.9Childhood disorder of social functioning, unspecified