F99-F99 ICD-10-CA block: Unspecified mental disorder (F99)
F99-F99 isn’t a code on its own. Choose one of the 1 code beneath it, the one the documentation supports.
Official description
F99-F99Unspecified mental disorder (F99)
ICD-10-CA · Canada
Codes in F99-F99
F99-F99 isn’t a code on its own. Open the code that matches what the note documents.
Notes for F99-F99
As CIHI prints them, with any note F99-F99 takes from the headings above it.
Includes
- Disorders of psychological developmentFrom Chapter 5: Mental and behavioural disorders (F00-F99)
Excludes
Conditions classified elsewhere.
- Symptoms, signs and abnormal clinical laboratory findings, not elsewhere classified (R00-R99)From Chapter 5: Mental and behavioural disorders (F00-F99)
Where F99-F99 sits
- 1ChapterChapter 5: Mental and behavioural disorders (F00-F99)
- 2Block F99-F99Unspecified mental disorder (F99)
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
Is F99-F99 a valid ICD-10-CA code?
No. F99-F99 (Unspecified mental disorder (F99)) is a block heading in CIHI’s ICD-10-CA FY 2026–2027 release. It holds 1 code; record the one the documentation supports.
Where is F99-F99 in ICD-10-CA?
F99-F99 sits under Chapter 5: Mental and behavioural disorders (F00-F99).
What coding notes apply to F99-F99?
ICD-10-CA lists Includes, Excludes notes for F99-F99, 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.
Codes beside F99-F99
F00-F09Organic, including symptomatic, mental disordersF10-F19Mental and behavioural disorders due to psychoactive substance useF20-F29Schizophrenia, schizotypal and delusional disordersF30-F39Mood [affective] disordersF40-F48Neurotic, stress-related and somatoform disordersF50-F59Behavioural syndromes associated with physiological disturbances and physical factorsF60-F69Disorders of adult personality and behaviourF70-F79Mental retardationF80-F89Disorders of psychological developmentF90-F98Behavioural and emotional disorders with onset usually occurring in childhood and adolescence