ICD-10 Code F03.B4 – Unspecified dementia, moderate, with anxiety (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code F03.B4 – Unspecified dementia, moderate, with anxiety
What it is
This code identifies dementia of unspecified type with moderate severity and documented anxiety. Use it when the record confirms dementia, but does not specify the underlying cause.
Clinical signs
Typical findings include memory loss, impaired judgment, and reduced ability to manage daily activities, with anxiety noted in the chart. Clinical features vary; refer to documentation.
When to use this code
Use F03.B4 when the provider documents unspecified dementia, rates it as moderate, and specifically notes anxiety. It is appropriate for encounters focused on cognitive decline or behavioral symptoms tied to the dementia diagnosis. Check documentation if severity or anxiety is unclear.
Do not use for
Do not use this code if the dementia type is identified, such as Alzheimer’s disease or vascular dementia. Do not assign it when anxiety is present without documented dementia.
Coding tip
Confirm both moderate severity and anxiety are explicitly documented before selecting F03.B4.