ICD-10 Code F03 – Unspecified dementia (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code F03 – Unspecified dementia
What it is
Use this code for dementia when the record confirms a dementia diagnosis but does not specify the type or cause. It indicates a persistent decline in cognitive function without further detail.
Clinical signs
Clinical features vary; refer to documentation. Common findings include memory loss, impaired judgment, confusion, and reduced ability to manage daily activities, but the chart must support a dementia diagnosis.
When to use this code
Use F03 when the provider documents dementia and no more specific category is stated. It may apply when the type is unknown, not yet determined, or not documented in the available record. You should code the documented level of specificity only.
Do not use for
Do not use this code if the record identifies a specific dementia type, such as Alzheimer’s disease or vascular dementia. Do not use it for mild cognitive impairment or temporary confusion without a dementia diagnosis.
Coding tip
Check the assessment and problem list for a more specific dementia diagnosis before defaulting to F03.