F20.9 — Schizophrenia, unspecified

F20.9

ICD-10 Chapter 5: Mental, Behavioral & Neurodevelopmental — illustrative image — Chapter 5: Mental, behavioral and neurodevelopmental disorders (F01–F99) — illustrative image

What this code means

Schizophrenia is a long-term mental health condition affecting thinking, perception and behaviour, often with hallucinations or delusions.

Also called: schizophrenia.

When this code is used

Used for schizophrenia when the type is not specified.

Where it sits in ICD-10-CM

Code F20.9 belongs to Chapter 5: Mental, behavioral and neurodevelopmental disorders, which covers codes F01–F99 in the FY2027 ICD-10-CM tabular list. The official description above is copied verbatim from the CDC/NCHS FY2027 code file.

Related symptoms

Insomnia

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Frequently asked questions

What is ICD-10-CM code F20.9?

F20.9 is the ICD-10-CM diagnosis code for “Schizophrenia, unspecified”. Schizophrenia is a long-term mental health condition affecting thinking, perception and behaviour, often with hallucinations or delusions.

When is code F20.9 used?

Used for schizophrenia when the type is not specified. It belongs to Chapter 5 of ICD-10-CM (Mental, behavioral and neurodevelopmental disorders).

This guide explains ICD-10-CM codes in plain language for patients, students and other readers. It is educational information only — not coding, billing or medical advice. The code recorded for any real encounter is assigned from the full clinical documentation by the treating team and qualified coders, and only they can decide which code fits a specific case.