ICD-10 Code F20.81 – Schizophreniform disorder (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code F20.81 – Schizophreniform disorder
What it is
Schizophreniform disorder is a psychotic disorder with symptoms like schizophrenia, but the illness lasts at least one month and less than six months. Use this code when the diagnosis is documented and the duration fits that range.
Clinical signs
Clinical features may include delusions, hallucinations, disorganized speech, grossly disorganized behavior, or negative symptoms. Clinical features vary; refer to documentation.
When to use this code
Use F20.81 when the provider documents schizophreniform disorder and the record supports a psychotic episode lasting under six months. It may be used during an active episode when the diagnosis is established. Check documentation if the duration is unclear or if another psychotic disorder is recorded.
Do not use for
Do not use this code for schizophrenia, brief psychotic disorder, or schizoaffective disorder unless the documentation specifically supports schizophreniform disorder. If the diagnosis is uncertain, check documentation.
Coding tip
Confirm the documented duration of illness before assigning F20.81, because duration is central to correct coding.