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Delirium due to known physiological condition==

Includes: acute or subacute brain syndrome

acute or subacute confusional state (nonalcoholic)

acute or subacute infective psychosis

acute or subacute organic reaction

acute or subacute psycho-organic syndrome

delirium of mixed etiology

delirium superimposed on dementia

sundowning

Code first the underlying physiological condition

Excludes1: delirium NOS (R41.0)

Excludes2: delirium tremens alcohol-induced or unspecified (F10.231, F10.931)

F06 Other mental disorders due to known physiological condition

Includes: mental disorders due to endocrine disorder

mental disorders due to exogenous hormone

mental disorders due to exogenous toxic substance

mental disorders due to primary cerebral disease

mental disorders due to somatic illness

mental disorders due to systemic disease affecting the brain

Code first the underlying physiological condition

Excludes1: unspecified dementia (F03)

Excludes2: delirium due to known physiological condition (F05)

dementia as classified in F01-F02

other mental disorders associated with alcohol and other psychoactive substances (F10-F19)

F06.0 Psychotic disorder with hallucinations due to known physiological condition

Organic hallucinatory state (nonalcoholic)

Excludes2: hallucinations and perceptual disturbance induced by alcohol and other psychoactive substances (F10-F19 with .151, .251, .951)

schizophrenia (F20.-)

F06.1 Catatonic disorder due to known physiological condition

Excludes1: catatonic stupor (R40.1)

stupor NOS (R40.1)

Excludes2: catatonic schizophrenia (F20.2)

dissociative stupor (F44.2)

F06.2 Psychotic disorder with delusions due to known physiological condition

Paranoid and paranoid-hallucinatory organic states

Schizophrenia-like psychosis in epilepsy

Excludes2: alcohol and drug-induced psychotic disorder (F10-F19 with .150, .250, .950)

brief psychotic disorder (F23)

delusional