2026 ICD-10-CM Diagnosis Code F39Unspecified mood [affective] disorder

ICD-10-CM Codes›F01–F99›F30-F39›F39

ICD-10-CM F39
CMSSource: CMS FY 2026 ICD-10-CM dataset · Effective Oct 1, 2025 – Sep 30, 2026

F39 is a billable ICD-10-CM diagnosis code for unspecified mood [affective] 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 Other specified and unspecified mood disorders.

Code Identity

ICD-10-CM Code
F39
Billable Status
Yes — Valid for Submission
Code Describes
Unspecified mood [affective] disorder
Chapter
F30-F39
Mood [affective] disorders

Code Classification

ChapterF01–F99Mental and behavioural disorders
SectionF30-F39Mood [affective] disorders
CategoryF39Unspecified mood [affective] disorder
This CodeF39Unspecified mood [affective] disorder

Approximate SynonymsGuidance

Alternate terms and clinical phrases that map to this code.

  • Affective psychosis
  • Amphetamine and/or amphetamine derivative-induced mood disorder
  • Episodic mood disorder
  • Mental disorder caused by methamphetamine
  • Mild mood disorder
  • Moderate mood disorder
  • Mood disorder
  • Mood disorder caused by methamphetamine
  • Mood disorder during pregnancy
  • Mood disorder in full remission
  • Mood disorder in partial remission
  • Psychological disorder during pregnancy
  • Secondary mood disorder
  • Severe mood disorder with psychotic features
  • Severe mood disorder with psychotic features, mood-congruent
  • Severe mood disorder with psychotic features, mood-incongruent
  • Severe mood disorder without psychotic features
  • Synthetic cannabinoid induced mood disorder

Tabular List NotesGuidance

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

Inclusion Terms

  • Affective psychosis 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)
      • mood
    • Disorder(of)
      • mood
        • recurrent
    • Episode
      • affective, mixed

Clinical ClassificationClinical

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

CCSR MBD004
Other specified and unspecified mood disorders
Default principal diagnosis: inpatient Yes · outpatient Yes

Clinical InformationClinical

  • Affective Psychosis

    the manifestation of psychotic symptoms, such as hallucinations or delusions, in the presence of a mood disorder.

Patient EducationClinical

Mood Disorders

Most people feel sad or irritable from time to time. They may say they're in a bad mood. A mood disorder is different. It affects a person's everyday emotional state. Nearly one in ten people aged 18 and older have mood disorders. These include depression and bipolar disorder (also called manic depression).

Read the full article at MedlinePlus

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

Convert F39 to ICD-9-CMHistory

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

ICD-9-CM
296.90 Episodic mood disord 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 F39Overview

Is F39 (Unspecified mood [affective] disorder) a billable code?

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

What is the ICD-9 equivalent of F39?

Under the General Equivalence Mappings, unspecified mood [affective] disorder converts to ICD-9-CM 296.90 (episodic mood disord 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.