F22 — Delusional disorders

F22

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

What this code means

Delusional disorder involves fixed false beliefs (delusions) without the broader features of schizophrenia.

Also called: delusional disorder, paranoia.

When this code is used

Used for delusional disorders.

Where it sits in ICD-10-CM

Code F22 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.

Frequently asked questions

What is ICD-10-CM code F22?

F22 is the ICD-10-CM diagnosis code for “Delusional disorders”. Delusional disorder involves fixed false beliefs (delusions) without the broader features of schizophrenia.

When is code F22 used?

Used for delusional disorders. 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.