ICD-10 Code F20.5 – Residual schizophrenia (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code F20.5 – Residual schizophrenia
What it is
Residual schizophrenia refers to a phase of schizophrenia where prominent psychotic symptoms have lessened, but ongoing evidence of the disorder remains. You use this code when the patient still shows negative or residual symptoms after an active episode.
Clinical signs
Clinical features vary; refer to documentation. Commonly, you may see reduced emotional expression, social withdrawal, limited speech, or diminished motivation, with a history of prior psychotic symptoms.
When to use this code
Use F20.5 when the record specifically documents residual schizophrenia or a residual phase of schizophrenia. It may also fit when active hallucinations or delusions are no longer the main focus, but persistent schizophrenia-related impairment remains. Check documentation for the current clinical status.
Do not use for
Do not use this code for acute schizophrenia, schizoaffective disorder, or other psychotic disorders unless the provider states residual schizophrenia. If the diagnosis is unclear, check documentation.
Coding tip
Code F20.5 only when the provider clearly identifies the residual phase, not merely a past history of schizophrenia.