Disorders of psychological development

Disorders of psychological development 

F80-F89 Disorders of psychological development 

Disorders of childhood such as infantile autism and disintegrative psychosis, classified in 

ICD-9 as psychoses, are now more appropriately contained in F84.-, pervasive 

developmental disorders. While some uncertainty remains about their nosological status, 

it has been considered that sufficient information is now available to justify the inclusion 

of the syndromes of Rett and Asperger in this group as specified disorders. Overactive 

disorder associated with mental retardation and stereotyped movements (F84.4) has been 

included in spite of its mixed nature, because evidence suggests that this may have 

considerable practical utility.