ICD-10 Code F02.C2 – Dementia in Other Diseases Classified Elsewhere, Severe, with Psychotic Disturbance (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code F02.C2 – Dementia in other diseases classified elsewhere, severe, with psychotic disturbance
What it is
This code identifies severe dementia caused by another underlying disease, with psychotic disturbance. Use it when the dementia is documented as secondary to a separate condition and psychotic features are present.
Clinical signs
Expect major cognitive decline with marked impairment in daily functioning. Psychotic disturbance may include hallucinations, delusions, or other clearly documented psychotic symptoms; clinical features vary, refer to documentation.
When to use this code
Use this code when the record states dementia is due to another disease and the severity is severe. The chart should also document psychotic disturbance linked to the dementia. Code the underlying cause separately when instructed by the record and coding rules.
Do not use for
Do not use this code for uncomplicated dementia, mild or moderate dementia, or dementia without psychotic disturbance. Check documentation if the cause is unspecified or if psychotic symptoms are not clearly recorded.
Coding tip
Confirm both the secondary cause and the severe psychotic presentation before assigning F02.C2.