F48.1 ICD-10-CA code: Depersonalization-derealization syndrome
F48.1 is the ICD-10-CA code for “Depersonalization-derealization syndrome” in CIHI’s FY 2026–2027 release, in effect from Apr 1, 2026.
Official description
F48.1Depersonalization-derealization syndrome
Short description: Depersonalization derealization syndrome
ICD-10-CA · Canada · Also written F481
Index terms
Entries in CIHI’s alphabetical index that lead to F48.1. Searching the index by the condition the note names is how coders reach this code.
- Derealization (neurotic)
- Disorder (of), depersonalization
- Syndrome, depersonalization (derealization)
- State (of), neurotic NEC, with depersonalization
- Neurosis, neurotic, state, with depersonalization episode
- Depersonalization (in neurotic state) (neurotic) (syndrome)
Notes for F48.1
As CIHI prints them, with any note F48.1 takes from the headings above it.
Includes
- Disorders of psychological developmentFrom Chapter 5: Mental and behavioural disorders (F00-F99)
Excludes
Conditions classified elsewhere.
- When associated with conduct disorder in F91.- (F92.8)From F40-F48 Neurotic, stress-related and somatoform disorders
- Symptoms, signs and abnormal clinical laboratory findings, not elsewhere classified (R00-R99)From Chapter 5: Mental and behavioural disorders (F00-F99)
Note
- A rare disorder in which the patient complains spontaneously that his or her mental activity, body, and surroundings are changed in their quality, so as to be unreal, remote, or automatized. Among the varied phenomena of the syndrome, patients complain most frequently of loss of emotions and feelings of estrangement or detachment from their thinking, their body, or the real world. In spite of the dramatic nature of the experience, the patient is aware of the unreality of the change. The sensorium is normal and the capacity for emotional expression intact. Depersonalization-derealization symptoms may occur as part of a diagnosable schizophrenic, depressive, phobic, or obsessive-compulsive disorder. In such cases the diagnosis should be that of the main disorder.
Where F48.1 sits
- 1ChapterChapter 5: Mental and behavioural disorders (F00-F99)
- 2Block F40-F48Neurotic, stress-related and somatoform disorders
- 3Category F48Other neurotic disorders
- 4Valid code F48.1Depersonalization-derealization syndrome
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 F48.1 mean?
F48.1 is the ICD-10-CA code for “Depersonalization-derealization syndrome” in CIHI’s ICD-10-CA FY 2026–2027 release.
Where is F48.1 in ICD-10-CA?
F48.1 sits under F48 Other neurotic disorders, within F40-F48 Neurotic, stress-related and somatoform disorders, within Chapter 5: Mental and behavioural disorders (F00-F99).
What coding notes apply to F48.1?
ICD-10-CA lists Note, Excludes, Includes notes for F48.1, 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.