2026 ICD-10-CM Diagnosis Code F31.89Other bipolar disorder

ICD-10-CM Codes›F01–F99›F30-F39›F31

ICD-10-CM F31.89
CMSSource: CMS FY 2026 ICD-10-CM dataset · Effective Oct 1, 2025 – Sep 30, 2026

F31.89 is a billable ICD-10-CM diagnosis code for other bipolar disorder. It is valid on HIPAA claims for fiscal year 2026 (October 1, 2025 through September 30, 2026). In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Bipolar and related disorders.

Code Identity

ICD-10-CM Code
F31.89
Billable Status
Yes — Valid for Submission
Code Describes
Other bipolar disorder
Short Description
Other bipolar disorder
Same as the full description in the CMS dataset.
Parent Code
F31.8
Other bipolar disorders

Code Classification

ChapterF01–F99Mental and behavioural disorders
SectionF30-F39Mood [affective] disorders
CategoryF31Bipolar disorder
This CodeF31.89Other bipolar disorder

Approximate SynonymsGuidance

Alternate terms and clinical phrases that map to this code.

  • Mild bipolar disorder
  • Moderate bipolar disorder
  • Rapid cycling bipolar I disorder
  • Recurrent manic episodes
  • Recurrent manic episodes, in full remission
  • Recurrent manic episodes, mild
  • Recurrent manic episodes, moderate
  • Recurrent manic episodes, severe, with psychosis
  • Recurrent severe manic episodes
  • Severe bipolar disorder with psychotic features, mood-congruent
  • Severe bipolar disorder with psychotic features, mood-incongruent
  • Severe bipolar disorder without psychotic features
  • Severe mood disorder with psychotic features
  • Severe mood disorder with psychotic features, mood-congruent

Tabular List NotesGuidance

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

Inclusion Terms

  • Recurrent manic episodes NOS

Index to Diseases and InjuriesGuidance

Alphabetical index entries that point to this code.

External Cause of Injuries IndexGuidance

References for this code in the External Cause of Injuries Index.

    • Disorder(of)
      • bipolar (I) (seasonal) (type 1)
        • specified NEC
    • Episode
      • manic
        • recurrent
    • Mania(monopolar)
      • chronic (recurrent)
    • Mania(monopolar)
      • recurrent
    • Psychosis, psychotic
      • mania, manic (single episode)
        • recurrent type
    • Stupor(catatonic)
      • manic-depressive

Clinical ClassificationClinical

AHRQ’s CCSR groups this code into broader clinical categories.

CCSR MBD003
Bipolar and related disorders
Default principal diagnosis: inpatient Yes · outpatient Yes

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.

Convert F31.89 to ICD-9-CMHistory

The closest ICD-9-CM equivalents under the General Equivalence Mappings.

ICD-9-CM
296.40 Bipol I currnt manic NOS
Approximate The match is approximate rather than exact.

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 F31.89Overview

Is F31.89 (Other bipolar disorders) a billable code?

Yes. This is a billable ICD-10-CM code, specific enough to report other bipolar disorder on HIPAA-covered claims from October 1, 2025 through September 30, 2026.

What is the ICD-9 equivalent of F31.89?

Under the General Equivalence Mappings, other bipolar disorder converts to ICD-9-CM 296.40 (bipol I currnt manic NOS). The mapping is approximate, so confirm the match fits the documentation.

Footnotes

[1] Not chronic - A diagnosis code that does not fit the criteria for chronic condition (duration, ongoing medical treatment, and limitations) is considered not chronic. Some codes designated as not chronic are acute conditions. Other diagnosis codes that indicate a possible chronic condition, but for which the duration of the illness is not specified in the code description (i.e., we do not know the condition has lasted 12 months or longer) also are considered not chronic.