F31 ICD-10-CA category: Bipolar affective disorder
F31 isn’t a code on its own. Choose one of the 10 codes beneath it, the one the documentation supports.
Official description
F31Bipolar affective disorder
ICD-10-CA · Canada
Codes in F31
F31 isn’t a code on its own. Open the code that matches what the note documents.
F31.0Bipolar affective disorder, current episode hypomanicF31.1Bipolar affective disorder, current episode manic without psychotic symptomsF31.2Bipolar affective disorder, current episode manic with psychotic symptomsF31.3Bipolar affective disorder, current episode mild or moderate depressionF31.4Bipolar affective disorder, current episode severe depression without psychotic symptomsF31.5Bipolar affective disorder, current episode severe depression with psychotic symptomsF31.6Bipolar affective disorder, current episode mixedF31.7Bipolar affective disorder, currently in remissionF31.8Other bipolar affective disordersF31.9Bipolar affective disorder, unspecifiedNotes for F31
As CIHI prints them, with any note F31 takes from the headings above it.
Includes
- Manic depressionmanic-depressive:• illness• psychosis• reaction
- Disorders of psychological developmentFrom Chapter 5: Mental and behavioural disorders (F00-F99)
Excludes
Conditions classified elsewhere.
- Bipolar disorder, single manic episode (F30.-)cyclothymia (F34.0)
- 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 two or more episodes in which the patient's mood and activity levels are significantly disturbed, this disturbance consisting on some occasions of an elevation of mood and increased energy and activity (hypomania or mania) and on others of a lowering of mood and decreased energy and activity (depression). Repeated episodes of hypomania or mania only are classified as bipolar.
- This block contains disorders in which the fundamental disturbance is a change in affect or mood to depression (with or without associated anxiety) or to elation. The mood change is usually accompanied by a change in the overall level of activity; most of the other symptoms are either secondary to, or easily understood in the context of, the change in mood and activity. Most of these disorders tend to be recurrent and the onset of individual episodes can often be related to stressful events or situations.From F30-F39 Mood [affective] disorders
Where F31 sits
- 1ChapterChapter 5: Mental and behavioural disorders (F00-F99)
- 2Block F30-F39Mood [affective] disorders
- 3Category F31Bipolar affective 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
Is F31 a valid ICD-10-CA code?
No. F31 (Bipolar affective disorder) is a category heading in CIHI’s ICD-10-CA FY 2026–2027 release. It holds 10 codes; record the one the documentation supports.
Where is F31 in ICD-10-CA?
F31 sits under F30-F39 Mood [affective] disorders, within Chapter 5: Mental and behavioural disorders (F00-F99).
What coding notes apply to F31?
ICD-10-CA lists Note, Includes, Excludes notes for F31, 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.