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 :F70-F79 Mental retardation
 * F80-F89 Pervasive and specific developmental disorders
 * F90-F98 Behavioral and emotional disorders with onset usually occurring in childhood and adolescence
 * F99 Unspecified mental disorder

=Mental disorders due to known physiological conditions (F01-F09)=
 * This block comprises a range of mental disorders grouped together on the basis of their having in common a demonstrable etiology in cerebral disease, brain injury, or other insult leading to cerebral dysfunction. The dysfunction may be primary, as in diseases, injuries, and insults that affect the brain directly and selectively; or secondary, as in systemic diseases and disorders that attack the brain only as one of the multiple organs or systems of the body that are involved.

F01 Vascular dementia

 * Vascular dementia as a result of infarction of the brain due to vascular disease, including hypertensive cerebrovascular disease.
 * Includes: arteriosclerotic dementia
 * Code first the underlying physiological condition or sequelae of cerebrovascular disease.
 * F01.5 Vascular dementia
 * F01.50 Vascular dementia without behavioral disturbance
 * F01.51 Vascular dementia with behavioral disturbance
 * Vascular dementia with aggressive behavior
 * Vascular dementia with combative behavior
 * Vascular dementia with violent behavior
 * Vascular dementia with wandering off

F02 Dementia in other diseases classified elsewhere

 * Code first the underlying physiological condition, such as:
 * Alzheimer's (G30.-)
 * cerebral lipidosis (E75.4)
 * Creutzfeldt-Jakob disease (A81.0-)
 * dementia with Lewy bodies (G31.83)
 * epilepsy and recurrent seizures (G40.-)
 * frontotemporal dementia (G31.09)
 * hepatolenticular degeneration (E83.0)
 * human immunodeficiency virus [HIV] disease (B20)
 * hypercalcemia (E83.52)
 * hypothyroidism, acquired (E00-E03.-)
 * intoxications (T36-T65)
 * Jakob-Creutzfeldt disease (A81.0-)
 * multiple sclerosis (G35)
 * neurosyphilis (A52.17)
 * niacin