ICD-10 Code F02.82 – Dementia in other diseases classified elsewhere, unspecified severity, with psychotic disturbance (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code F02.82 – Dementia in other diseases classified elsewhere, unspecified severity, with psychotic disturbance
What it is
This code identifies dementia caused by another underlying disease, with no specified severity, when psychotic disturbance is documented. Use it when the dementia is secondary and the record supports psychosis such as hallucinations or delusions.
Clinical signs
Clinical features include cognitive decline affecting memory, reasoning, or daily function, along with psychotic symptoms. Clinical features vary; refer to documentation for the specific psychotic disturbance and underlying condition.
When to use this code
Use this code when the provider documents dementia due to another disease and specifically states psychotic disturbance, but does not specify mild, moderate, or severe. It also fits cases where the underlying disease is identified and the psychosis is part of the dementia diagnosis. Check documentation if severity or cause is unclear.
Do not use for
Do not use this code for primary dementia without a documented underlying disease, or when psychotic symptoms are present but dementia is not documented. Do not code it if another dementia subtype or severity is clearly specified instead.
Coding tip
Confirm both the secondary cause and the psychotic disturbance in the provider note before assigning F02.82.