ICD-10 Code F02.A2 – Dementia in other diseases classified elsewhere, mild, with psychotic disturbance (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code F02.A2 – Dementia in other diseases classified elsewhere, mild, with psychotic disturbance
What it is
This code identifies mild dementia caused by another underlying disease, with psychotic disturbance present. Use it when the dementia is documented as secondary to a known condition and psychotic features are part of the record.
Clinical signs
Clinical features vary; refer to documentation. Mild dementia usually involves noticeable cognitive decline with some preserved independence, and psychotic disturbance may include hallucinations, delusions, or related behavioral symptoms.
When to use this code
Use this code when the provider documents dementia due to another disease and specifies the severity as mild. It also requires documentation of psychotic disturbance linked to the dementia. You should code the underlying disease separately when instructed by the record and coding guidelines.
Do not use for
Do not use this code for dementia without psychotic disturbance, or when the dementia is not linked to another disease. Check documentation if the underlying cause, severity, or psychotic features are unclear.
Coding tip
Verify both the secondary cause and the psychotic disturbance in the note before assigning F02.A2.