ORGANIC PSYCHOTIC CONDITIONS (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)
290 Dementias
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)
290.0: Senile dementia, uncomplicated
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)
290.1: Presenile dementia
Brain syndrome with presenile brain disease
Excludes:
arteriosclerotic dementia (290.40-290.43)
dementia associated with other cerebral conditions (294.10-294.11)
290.2: Senile dementia with delusional or depressive features
Excludes:
senile dementia:
NOS (290.0)
with delirium and/or confusion (290.3)
290.3: Senile dementia with delirium
Senile dementia with acute confusional state
Excludes:
senile:
dementia NOS (290.0)
psychosis NOS (290.20)
290.4: Vascular dementia
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)
290.8: Other specified senile psychotic conditions
Presbyophrenic psychosis
290.9: Unspecified senile psychotic condition

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