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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