F05
Delirium due to known physiological condition
Billable
Coding Guidelines
Inclusion Terms
- 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
Excludes1 (Mutually Exclusive)
These codes should never be used together with F05
- R41.0 - delirium NOS (R41.0)
Excludes2 (Not Included Here)
These conditions are not part of this code but may be reported additionally if documented
- delirium tremens alcohol-induced or unspecified (F10.231, F10.921)
Code First
- the underlying physiological condition, such as:
- dementia (F03.9-)
