ICD-10 Code F02.A0 – Dementia in other diseases classified elsewhere, mild, without behavioral disturbance, psychotic disturbance, mood disturbance, and anxiety (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code F02.A0 – Dementia in other diseases classified elsewhere, mild, without behavioral disturbance, psychotic disturbance, mood disturbance, and anxiety
What it is
This code identifies mild dementia caused by another underlying disease, such as a neurologic or systemic condition. It applies when no behavioral, psychotic, mood, or anxiety disturbance is documented.
Clinical signs
Typical findings include mild memory loss, reduced attention, and subtle decline in daily function. Clinical features vary; refer to documentation and the underlying disease.
When to use this code
Use this code when the record clearly links dementia to another disease and describes the severity as mild. It also needs documentation that behavioral, psychotic, mood, and anxiety disturbances are absent. Code the underlying condition separately when required.
Do not use for
Do not use this code for unspecified dementia, dementia without documented mild severity, or cases with behavioral or psychiatric disturbance. Check documentation if the cause of dementia is not clearly stated.
Coding tip
Verify both the underlying disease and the absence of behavioral or psychiatric features before assigning F02.A0.