2026 ICD-10-CM Diagnosis Code F31Bipolar disorder

ICD-10-CM Codes›F01–F99›F30-F39›F31

ICD-10-CM F31
CMSSource: CMS FY 2026 ICD-10-CM dataset · Effective Oct 1, 2025 – Sep 30, 2026

F31 is a non-billable ICD-10-CM category code for bipolar disorder, so it cannot be submitted on claims. Use a more specific code from this category instead, such as F31.0, F31.10, F31.11, and F31.12.

Code Identity

ICD-10-CM Code
F31
Billable Status
No — Non-Billable Category
Code Describes
Bipolar disorder
Chapter
F30-F39
Mood [affective] disorders

Code Classification

ChapterF01–F99Mental and behavioural disorders
SectionF30-F39Mood [affective] disorders
CategoryF31Bipolar disorder
This CodeF31Bipolar disorder

Specific Coding for Bipolar disorderOverview

Non-specific codes like F31 require more characters. Use one of these billable codes instead:

  • Use F31.0 for Bipolar disorder, current episode hypomanic

  • F31.1 for Bipolar disorder, current episode manic without psychotic features

  • Use F31.10 for Bipolar disorder, current episode manic without psychotic features, unspecified

  • Use F31.11 for Bipolar disorder, current episode manic without psychotic features, mild

  • Use F31.12 for Bipolar disorder, current episode manic without psychotic features, moderate

  • Use F31.13 for Bipolar disorder, current episode manic without psychotic features, severe

  • Use F31.2 for Bipolar disorder, current episode manic severe with psychotic features

  • F31.3 for Bipolar disorder, current episode depressed, mild or moderate severity

  • Use F31.30 for Bipolar disorder, current episode depressed, mild or moderate severity, unspecified

  • Use F31.31 for Bipolar disorder, current episode depressed, mild

  • Use F31.32 for Bipolar disorder, current episode depressed, moderate

  • Use F31.4 for Bipolar disorder, current episode depressed, severe, without psychotic features

  • Use F31.5 for Bipolar disorder, current episode depressed, severe, with psychotic features

  • F31.6 for Bipolar disorder, current episode mixed

  • Use F31.60 for Bipolar disorder, current episode mixed, unspecified

  • Use F31.61 for Bipolar disorder, current episode mixed, mild

  • Use F31.62 for Bipolar disorder, current episode mixed, moderate

  • Use F31.63 for Bipolar disorder, current episode mixed, severe, without psychotic features

  • Use F31.64 for Bipolar disorder, current episode mixed, severe, with psychotic features

  • F31.7 for Bipolar disorder, currently in remission

  • Use F31.70 for Bipolar disorder, currently in remission, most recent episode unspecified

  • Use F31.71 for Bipolar disorder, in partial remission, most recent episode hypomanic

  • Use F31.72 for Bipolar disorder, in full remission, most recent episode hypomanic

  • Use F31.73 for Bipolar disorder, in partial remission, most recent episode manic

  • Use F31.74 for Bipolar disorder, in full remission, most recent episode manic

  • Use F31.75 for Bipolar disorder, in partial remission, most recent episode depressed

  • Use F31.76 for Bipolar disorder, in full remission, most recent episode depressed

  • Use F31.77 for Bipolar disorder, in partial remission, most recent episode mixed

  • Use F31.78 for Bipolar disorder, in full remission, most recent episode mixed

  • F31.8 for Other bipolar disorders

  • Use F31.81 for Bipolar II disorder

  • Use F31.89 for Other bipolar disorder

  • Use F31.9 for Bipolar disorder, unspecified

Tabular List NotesGuidance

Coding notes and annotation back-references applicable to this code.

Includes

  • bipolar I disorder
  • bipolar type I disorder
  • manic-depressive illness
  • manic-depressive psychosis
  • manic-depressive reaction
  • seasonal bipolar disorder

Type 1 Excludes

  • bipolar disorder, single manic episode F30
  • major depressive disorder, single episode F32
  • major depressive disorder, recurrent F33

Type 2 Excludes

Clinical InformationClinical

  • Bipolar Disorder

    a major affective disorder marked by severe mood swings (manic or major depressive episodes) and a tendency to remission and recurrence.

Patient EducationClinical

Bipolar Disorder

Bipolar disorder is a mood disorder that can cause intense mood swings:

The full article covers:

  • What is bipolar disorder?
  • What are the types of bipolar disorder?
  • What causes bipolar disorder?
  • Who is at risk for bipolar disorder?
  • What are the symptoms of bipolar disorder?
  • How is bipolar disorder diagnosed?
  • What are the treatments for bipolar disorder?

Read the full article at MedlinePlus

Courtesy of MedlinePlus, a service of the U.S. National Library of Medicine.

Code HistoryHistory

FY 2016AddedAdded to the ICD-10-CM code setEffective October 1, 2015, the first year of ICD-10-CM.
FY 2017–2025No changes
FY 2026CurrentCurrent code set, no changesEffective October 1, 2025 through September 30, 2026.

Questions About F31Overview

Is F31 (Bipolar disorder) a billable code?

No. This is a category header that groups the codes for bipolar disorder, and headers cannot be submitted on claims. Claims for bipolar disorder need a more specific code from this category, such as F31.0, F31.10, and F31.11.