5. MENTAL, BEHAVIORAL AND NEURODEVELOPMENTAL DISORDERS (290-319)
PSYCHOSES (290-299)
Excludes: intellectual disabilities (317-319)
ORGANIC PSYCHOTIC CONDITIONS (ICD 9 CODES: 290-294)
Includes: psychotic organic brain syndrome
Excludes: nonpsychotic syndromes of organic etiology (310.0-310.9)
psychoses classifiable to 295-298 and without impairment of orientation, comprehension, calculation, learning capacity, and judgement, but associated with physical disease, injury, or condition affecting the brain [e.g., following childbirth] (295.0-298.8)
Code first the associated neurological condition
Excludes: dementia due to alcohol (291.0-291.2)
dementia due to drugs (292.82)
dementia not classified as senile, presenile, or arteriosclerotic (294.10-294.11)
psychoses classifiable to 295-298 occurring in the senium without dementia or delirium (295.0-298.8)
senility with mental changes of nonpsychotic severity (310.1)
transient organic psychotic conditions (293.0-293.9)
Senile dementia:
NOS
simple type
Excludes: mild memory disturbances, not amounting to dementia, associated with senile brain disease (310.89)
senile dementia with:
delirium or confusion (290.3)
delusional [paranoid] features (290.20)
depressive features (290.21)
Brain syndrome with presenile brain disease
Excludes: arteriosclerotic dementia (290.40-290.43)
dementia associated with other cerebral conditions (294.10-294.11)
Presenile dementia:
NOS
simple type
Presenile dementia with acute confusional state
Presenile dementia, paranoid type
Presenile dementia, depressed type
Excludes: senile dementia:
NOS (290.0)
with delirium and/or confusion (290.3)
Senile dementia, paranoid type
Senile psychosis NOS
Senile dementia with acute confusional state
Excludes: senile:
dementia NOS (290.0)
psychosis NOS (290.20)
Multi-infarct dementia or psychosis
Use additional code to identify cerebral atherosclerosis (437.0)
Excludes: suspected cases with no clear evidence of arteriosclerosis (290.9)
Arteriosclerotic dementia:
NOS
simple type
Arteriosclerotic dementia with acute confusional state
Arteriosclerotic dementia, paranoid type
Arteriosclerotic dementia, depressed type
Presbyophrenic psychosis
Excludes: alcoholism without psychosis (303.0-303.9)
Alcoholic delirium
Delirium tremens
Excludes: alcohol withdrawal (291.81)
Alcoholic polyneuritic psychosis
Korsakoff's psychosis, alcoholic
Wernicke-Korsakoff syndrome (alcoholic)
Alcoholic dementia NOS
Alcoholism associated with dementia NOS
Chronic alcoholic brain syndrome
Alcoholic:
hallucinosis (acute)
psychosis with hallucinosis
Excludes: alcohol withdrawal with delirium (291.0)
schizophrenia (295.0-295.9) and paranoid states (297.0-297.9) taking the form of chronic hallucinosis with clear consciousness in an alcoholic
Pathologic:
alcohol intoxication
drunkenness
Excludes: acute alcohol intoxication (305.0)
in alcoholism (303.0)
simple drunkenness (305.0)
Alcoholic:
paranoia
psychosis, paranoid type
Excludes: nonalcoholic paranoid states (297.0-297.9)
schizophrenia, paranoid type (295.3)
Alcohol:
abstinence syndrome or symptoms
withdrawal syndrome or symptoms
Excludes: alcohol withdrawal:
delirium (291.0)
hallucinosis (291.3)
delirium tremens (291.0)
Alcohol induced circadian rhythm sleep disorders
Alcohol induced hypersomnia
Alcohol induced insomnia
Alcohol induced parasomnia
Alcohol-induced anxiety disorder
Alcohol-induced mood disorder
Alcohol-induced sexual dysfunction
Alcoholic:
mania NOS
psychosis NOS
Alcoholism (chronic) with psychosis
Alcohol-related disorder NOS
Includes: organic brain syndrome associated with consumption of drugs
Use additional code for any associated drug dependence (304.0-304.9)
Use additional E code to identify drug
Drug:
abstinence syndrome or symptoms
withdrawal syndrome or symptoms
Paranoid state induced by drugs
Hallucinatory state induced by drugs
Excludes: states following LSD or other hallucinogens, lasting only a few days or less ["bad trips"] (305.3)
Drug reaction resulting in brief psychotic states
NOS
idiosyncratic
pathologic
Excludes: expected brief psychotic reactions to hallucinogens ["bad trips"] (305.3)
physiological side-effects of drugs (e.g., dystonias)
Depressive state induced by drugs
Drug induced circadian rhythm sleep disorder
Drug induced hypersomnia
Drug induced insomnia
Drug induced parasomnia
Drug-induced anxiety disorder
Drug-induced organic personality syndrome
Drug-induced sexual dysfunction
Drug intoxication
Drug-related disorder NOS
Organic psychosis NOS due to or associated with drugs
Includes: transient organic mental disorders not associated with alcohol or drugs
Code first the associated physical or neurological condition
Excludes: confusional state or delirium superimposed on senile dementia (290.3)
dementia due to:
alcohol (291.0-291.9)
arteriosclerosis (290.40-290.43)
drugs (292.82)
senility (290.0)
Acute:
confusional state
infective psychosis
organic reaction
posttraumatic organic psychosis
psycho-organic syndrome
Acute psychosis associated with endocrine, metabolic, or cerebrovascular disorder
Epileptic:
confusional state
twilight state
Subacute:
confusional state
infective psychosis
organic reaction
posttraumatic organic psychosis
psycho-organic syndrome
psychosis associated with endocrine or metabolic disorder
Transient organic psychotic condition, paranoid type
Transient organic psychotic condition, hallucinatory type
Transient organic psychotic condition, depressive type
Catatonic disorder in conditions classified elsewhere
Organic psychosis:
infective NOS
posttraumatic NOS
transient NOS
Psycho-organic syndrome
Includes: organic psychotic brain syndromes (chronic), not elsewhere classified
Korsakoff's psychosis or syndrome (nonalcoholic)
Code first underlying condition
Excludes: alcoholic:
amnestic syndrome (291.1)
Korsakoff's psychosis (291.1)
Dementia of the Alzheimer's type
Code first any underlying physical condition as:
Alzheimer's disease (331.0)
cerebral lipidoses (330.1)
dementia with Lewy bodies (331.82)
dementia with Parkinsonism (331.82)
epilepsy (345.0-345.9)
frontal dementia (331.19)
frontotemporal dementia (331.19)
general paresis [syphilis] (094.1)
hepatolenticular degeneration (275.1)
Huntington's chorea (333.4)
Jakob-Creutzfeldt disease (046.11-046.19)
multiple sclerosis (340)
Parkinson's disease (332.0)
Pick's disease of the brain (331.11)
polyarteritis nodosa (446.0)
syphilis (094.1)
Excludes: dementia:
arteriosclerotic (290.40-290.43)
presenile (290.10-290.13)
senile (290.0)
epileptic psychosis NOS (294.8)
Dementia in conditions classified elsewhere NOS
Aggressive behavior
Combative behavior
Violent behavior
Use additional code, where applicable, to identify:
wandering in conditions classified elsewhere (V40.31)
Excludes: mild memory disturbances, not amounting to dementia (310.89)
Dementia NOS
Aggressive behavior
Combative behavior
Violent behavior
Use additional code, where applicable, to identify:
wandering in conditions classified elsewhere (V40.31)
Amnestic disorder NOS
Epileptic psychosis NOS
Mixed paranoid and affective organic psychotic states
Use additional code for associated epilepsy (345.0-345.9)
Excludes: mild memory disturbances, not amounting to dementia (310.89)
Cognitive disorder NOS
Organic psychosis (chronic)
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