Code
Hierarchy
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F01-F99 Mental, Behavioral and Neurodevelopmental disorders (F01-F99)
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F01-F09 Mental disorders due to known physiological conditions (F01-F09)
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F01 Vascular dementia
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F02 Dementia in other diseases classified elsewhere
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F03 Unspecified dementia
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F04 Amnestic disorder due to known physiological condition
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F05 Delirium due to known physiological condition
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F06 Other mental disorders due to known physiological condition
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F07 Personality and behavioral disorders due to known physiological condition
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F09 Unspecified mental disorder due to known physiological condition
-
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Notes
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This block comprises a range of mental disorders grouped together on the basis of their having in common a demonstrable etiology in cerebral disease, brain injury, or other insult leading to cerebral dysfunction. The dysfunction may be primary, as in diseases, injuries, and insults that affect the brain directly and selectively; or secondary, as in systemic diseases and disorders that attack the brain only as one of the multiple organs or systems of the body that are involved.
Inclusion Terms
F05
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Acute or subacute brain syndrome
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Acute or subacute confusional state (nonalcoholic)
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Acute or subacute infective psychosis
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Acute or subacute organic reaction
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Acute or subacute psycho-organic syndrome
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Delirium of mixed etiology
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Delirium superimposed on dementia
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Sundowning
Code First
F05
-
the underlying physiological condition, such as:
-
dementia (F03.9-)
- F03.9 Unspecified dementia, unspecified severity
Includes
-
disorders of psychological development
Excludes 1
F05
-
delirium NOS (R41.0)
- R41.0 Disorientation, unspecified
Excludes 2
F05
- delirium tremens alcohol-induced or unspecified (F10.231, F10.921)
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symptoms, signs and abnormal clinical laboratory findings, not elsewhere classified (R00-R99)
- R00-R99 Symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R99)