ICD-10 Code F02.C0 – Dementia in other diseases classified elsewhere, severe, without behavioral disturbance, psychotic disturbance, mood disturbance, and anxiety (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code F02.C0 – Dementia in other diseases classified elsewhere, severe, without behavioral disturbance, psychotic disturbance, mood disturbance, and anxiety
What it is
This code identifies severe dementia caused by another underlying disease, with no documented behavioral, psychotic, mood, or anxiety disturbance. Use it when the dementia is secondary and the severity is clearly recorded.
Clinical signs
Expected findings include major cognitive decline with significant impairment in daily functioning. Clinical features vary; refer to documentation for the underlying disease and confirm absence of the specified behavioral or psychiatric disturbances.
When to use this code
Use this code when the record states severe dementia due to another condition, such as a documented neurologic or systemic disease, and the provider notes no behavioral disturbance. You should also verify that psychotic, mood, and anxiety symptoms are absent or not documented for this code. If the underlying disease is not specified, check documentation before assigning the code.
Do not use for
Do not use this code if the dementia is not severe or if behavioral, psychotic, mood, or anxiety disturbance is documented. Do not use it for primary dementia without an identified underlying disease.
Coding tip
Always code the underlying disease first, then confirm the dementia severity and the absence of the specified disturbances.