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| 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.
