F05. Delirium, not induced by alcohol and other psychoactive substances
An etiologically nonspecific organic cerebral syndrome characterized by concurrent disturbances of consciousness and attention, perception, thinking, memory, psychomotor behaviour, emotion, and the sleep- wake schedule. The duration is variable and the degree of severity ranges from mild to very severe.
Includes: acute or subacute:
. brain syndrome
. confusional state (nonalcoholic)
. infective psychosis
. organic reaction
. psycho-organic syndrome
Excludes: delirium tremens, alcohol-induced or unspecified (F10.4)
0 Delirium not superimposed on dementia, so described
1 Delirium superimposed on dementia
Conditions meeting the above criteria but developing in the course of a dementia (F00-F03)
8 Other delirium
Delirium of mixed origin
9 Delirium, unspecified