F22.0 ICD-10-CA code: Delusional disorder
F22.0 is the ICD-10-CA code for “Delusional disorder” in CIHI’s FY 2026–2027 release, in effect from Apr 1, 2026.
Official description
F22.0Delusional disorder
ICD-10-CA · Canada · Also written F220
Index terms
Entries in CIHI’s alphabetical index that lead to F22.0. Searching the index by the condition the note names is how coders reach this code.
- Paranoia
- Paranoid, state
- Cotard's syndrome
- Paranoid, psychosis
- State (of), paranoid
- Disorder (of), paranoid
- Paranoid, state, simple
- Disorder (of), delusional
- Sensitiver Beziehungswahn
- Persecution, delusion (of)
- Sander's disease (paranoia)
- State (of), paranoid, simple
- Psychosis, psychotic, paranoid
- Paraphrenia, paraphrenic (late)
- Psychosis, psychotic, paranoiac
- Paranoid, reaction (acute), chronic
- Reaction, paranoid (acute), chronic
- Disorder (of), delusional, systematized
- Disorder (of), psychotic (due to), delusional
Notes for F22.0
As CIHI prints them, with any note F22.0 takes from the headings above it.
Includes
- ParanoiaParanoid:• psychosis• stateParaphrenia (late)Sensitiver Beziehungswahn
- Disorders of psychological developmentFrom Chapter 5: Mental and behavioural disorders (F00-F99)
Excludes
Conditions classified elsewhere.
- Paranoid:• personality disorder (F60.0)• psychosis, psychogenic (F23.3)• reaction (F23.3)• schizophrenia (F20.0)
- Symptoms, signs and abnormal clinical laboratory findings, not elsewhere classified (R00-R99)From Chapter 5: Mental and behavioural disorders (F00-F99)
Note
- A disorder characterized by the development either of a single delusion or of a set of related delusions that are usually persistent and sometimes lifelong. The content of the delusion or delusions is very variable. Clear and persistent auditory hallucinations (voices), schizophrenic symptoms such as delusions of control and marked blunting of affect, and definite evidence of brain disease are all incompatible with this diagnosis. However, the presence of occasional or transitory auditory hallucinations, particularly in elderly patients, does not rule out this diagnosis, provided that they are not typically schizophrenic and form only a small part of the overall clinical picture.
- Includes a variety of disorders in which long-standing delusions constitute the only, or the most conspicuous, clinical characteristic and which cannot be classified as organic, schizophrenic or affective. Delusional disorders that have lasted for less than a few months should be classified, at least temporarily, under F23.-.From F22 Persistent delusional disorders
- This block brings together schizophrenia, as the most important member of the group, schizotypal disorder, persistent delusional disorders, and a larger group of acute and transient psychotic disorders. Schizoaffective disorders have been retained here in spite of their controversial nature.From F20-F29 Schizophrenia, schizotypal and delusional disorders
Where F22.0 sits
- 1ChapterChapter 5: Mental and behavioural disorders (F00-F99)
- 2Block F20-F29Schizophrenia, schizotypal and delusional disorders
- 3Category F22Persistent delusional disorders
- 4Valid code F22.0Delusional disorder
Source and release
- Data release
- ICD-10-CA · FY 2026–2027
- Effective date
- Apr 1, 2026
- Publisher
- CIHI
This page is built from the ICD-10-CA catalog that Vero Codes reads when it suggests codes: Canadian Institute for Health Information’s FY 2026–2027 release, imported from the publisher’s file and checked against it. The description, notes and structured data come from the same record.
Frequently asked questions
What does ICD-10-CA code F22.0 mean?
F22.0 is the ICD-10-CA code for “Delusional disorder” in CIHI’s ICD-10-CA FY 2026–2027 release.
Where is F22.0 in ICD-10-CA?
F22.0 sits under F22 Persistent delusional disorders, within F20-F29 Schizophrenia, schizotypal and delusional disorders, within Chapter 5: Mental and behavioural disorders (F00-F99).
What coding notes apply to F22.0?
ICD-10-CA lists Note, Includes, Excludes notes for F22.0, including those from the headings it sits under. They are listed on this page with where each one comes from.
Which ICD-10-CA release does this page use?
It uses CIHI’s FY 2026–2027 release, in effect from Apr 1, 2026 to Mar 31, 2027. It is a reference: confirm the code against the current list and the payer’s rules before you submit it.