U.S. ICD-10-CM · FY 2027

F31 ICD-10-CM Code: Bipolar disorder

A clear reference for the official code description, hierarchy, and related coding information from the FY 2027 U.S. release.

Code definition

Official description

F31

Bipolar disorder

ICD-10-CM diagnosis code · United States clinical modification

Classification

Where F31 sits

  1. 1

    Chapter 5

    Mental, Behavioral and Neurodevelopmental disorders (F01-F99)

  2. 2

    Section

    Mood [affective] disorders (F30-F39)

  3. 3

    Category F31

    Bipolar disorder

  4. 4

    Code F31

    Bipolar disorder

More specific choices

Codes under F31

F31 is a non-billable category. Choose the child code that best matches the documented diagnosis.

F31.0

Bipolar disorder, current episode hypomanic

F31.1

Bipolar disorder, current episode manic without psychotic features

F31.2

Bipolar disorder, current episode manic severe with psychotic features

F31.3

Bipolar disorder, current episode depressed, mild or moderate severity

F31.4

Bipolar disorder, current episode depressed, severe, without psychotic features

F31.5

Bipolar disorder, current episode depressed, severe, with psychotic features

F31.6

Bipolar disorder, current episode mixed

F31.7

Bipolar disorder, currently in remission

F31.8

Other bipolar disorders

F31.9

Bipolar disorder, unspecified

Documentation details

Notes for this code

Inclusion terms

No inclusion terms are listed for F31.

Code first

No “code first” instruction is listed for F31.

Use additional code

No “use additional code” instruction is listed for F31.

Excludes1

Conditions that should not be reported together with this code.

  • bipolar disorder, single manic episode (F30.-)
  • major depressive disorder, single episode (F32.-)
  • major depressive disorder, recurrent (F33.-)

Excludes2

Conditions not included here that may be reported separately when present.

  • cyclothymia (F34.0)

Transparency

Source and release

Data release

U.S. ICD-10-CM · FY 2027

Effective date

Oct 1, 2026

Publisher

Vero Scribe Inc.

This reference is generated from Vero’s ICD-10-CM description, hierarchy, and code-note dataset. The visible content and structured data share that source.

Review the CDC/NCHS ICD-10-CM source

Code-specific guidance

Frequently asked questions

What does ICD-10-CM code F31 mean?

F31 is the FY 2027 U.S. ICD-10-CM code for “Bipolar disorder.”

Is F31 a billable or specific ICD-10-CM code?

No. F31 has more specific child codes in the FY 2027 reference data. Select the code that matches the documentation and confirm the active code set and payer requirements.

Where is F31 located in ICD-10-CM?

F31 is listed in Chapter 5, Mental, Behavioral and Neurodevelopmental disorders (F01-F99), within Mood [affective] disorders (F30-F39) (F30–F39), under category F31, Bipolar disorder.

What coding notes are listed for F31?

No inclusion terms are listed for F31 in this reference record. No code-first instruction is listed. Excludes1 notes: bipolar disorder, single manic episode (F30.-); major depressive disorder, single episode (F32.-); major depressive disorder, recurrent (F33.-). Excludes2 notes: cyclothymia (F34.0).

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