Wiki ICD-10 Code For Dementia with Depression

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Code: F02
Code Name: ICD-10 Code for Dementia in other diseases classified elsewhere
Block: Mental disorders due to known physiological conditions (F01-F09)
Details: Dementia in other diseases classified elsewhere
Code first the underlying physiological condition, such as:Alzheimer's (G30.-)
cerebral lipidosis (E75.4)
Creutzfeldt-Jakob disease (A81.0-)
dementia with Lewy bodies (G31.83)
dementia with Parkinsonism (G31.83)
epilepsy and recurrent seizures (G40.-)
frontotemporal dementia (G31.09)
hepatolenticular degeneration (E83.0)
human immunodeficiency virus [HIV] disease (B20)
Huntington's disease (G10)
hypercalcemia (E83.52)
hypothyroidism, acquired (E00-E03.-)
intoxications (T36-T65)
Jakob-Creutzfeldt disease (A81.0-)
multiple sclerosis (G35)
neurosyphilis (A52.17)
niacin deficiency [pellagra] (E52)
Parkinson's disease (G20)
Pick's disease (G31.01)
polyarteritis nodosa (M30.0)
prion disease (A81.9)
systemic lupus erythematosus (M32.-)
traumatic brain injury (S06.-)
trypanosomiasis (B56.-, B57.-)
vitamin B deficiency (E53.8)
Includes: Major neurocognitive disorder in other diseases classified elsewhere
Excludes 2: dementia in alcohol and psychoactive substance disorders (F10-F19, with .17, .27, .97)
vascular dementia (F01.5-)
Guidelines: Mental, Behavioral and Neurodevelopmental disorders (F01-F99)
Excludes 2: symptoms, signs and abnormal clinical laboratory findings, not elsewhere classified (R00-R99)
Includes: disorders of psychological development
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Best answers

What is the correct code for Dementia with Depression? I use F03.91.

Does that documentation indicate the dementia caused the depression? What type of depression is this? Without a cause-and-effect relationship, you wouldn't code these as one condition.