ICD-10 Code F20.9 – Schizophrenia, unspecified (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code F20.9 – Schizophrenia, unspecified
What it is
F20.9 identifies schizophrenia when the record confirms schizophrenia but does not specify a subtype or current pattern. Use it for a documented schizophrenia diagnosis without clearer detail.
Clinical signs
Clinical features vary; refer to documentation. Commonly recorded findings include delusions, hallucinations, disorganized thinking, and impaired functioning, but you should code only what the provider documents.
When to use this code
Use F20.9 when the clinician documents schizophrenia and the note does not name paranoid, hebephrenic, catatonic, residual, or another specified form. It also fits when the chart lacks enough detail to assign a more specific code.
If the provider later clarifies the subtype, update the code accordingly. Check documentation for the most specific diagnosis available at the time of coding.
Do not use for
Do not use this code for schizophrenia subtypes that are clearly documented, or for psychotic disorders that are not schizophrenia. Check documentation when the diagnosis is uncertain or incomplete.
Coding tip
Query the provider when schizophrenia is noted but the subtype is missing, so you can code the most specific diagnosis supported by the record.