2026 ICD-10-CM Diagnosis Code F33.1Major depressive disorder, recurrent, moderate

ICD-10-CM Codes›F01–F99›F30-F39›F33

ICD-10-CM F33.1
CMSSource: CMS FY 2026 ICD-10-CM dataset · Effective Oct 1, 2025 – Sep 30, 2026

F33.1 is a billable ICD-10-CM diagnosis code for major depressive disorder, recurrent, moderate. It is valid on HIPAA claims for fiscal year 2026 (October 1, 2025 through September 30, 2026). Coders also document this condition as moderate depression. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Depressive disorders.

Code Identity

ICD-10-CM Code
F33.1
Billable Status
Yes — Valid for Submission
Code Describes
Major depressive disorder, recurrent, moderate
Short Description
Major depressive disorder, recurrent, moderate
Same as the full description in the CMS dataset.
Parent Code
F33
Major depressive disorder, recurrent

Code Classification

ChapterF01–F99Mental and behavioural disorders
SectionF30-F39Mood [affective] disorders
CategoryF33Major depressive disorder, recurrent
This CodeF33.1Major depressive disorder, recurrent, moderate

Approximate SynonymsGuidance

Alternate terms and clinical phrases that map to this code.

  • Moderate depression
  • Moderate major depression
  • Moderate recurrent major depression
  • Recurrent major depressive episodes
  • Recurrent major depressive episodes, moderate
  • Recurrent moderate major depressive disorder co-occurrent with anxiety

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)
      • depressive
        • recurrent
          • current episode
            • moderate

Clinical ClassificationClinical

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

CCSR MBD002
Depressive disorders
Default principal diagnosis: inpatient Yes · outpatient Yes

Patient EducationClinical

Depression

Depression is more than a feeling of being sad or irritable for a few days. It's a serious mood disorder. As one of the most common mental disorders in the United States, depression can affect how you think, feel, and your everyday life.

The full article covers:

  • What is depression?
  • What are the different types of depression?
  • What causes depression?
  • Who is at risk of depression?
  • What are the symptoms of depression?
  • How is depression diagnosed?
  • What are the treatments for depression?
  • Can depression be prevented?

Read the full article at MedlinePlus

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

Convert F33.1 to ICD-9-CMHistory

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

ICD-9-CM
296.32 Recurr depr psychos-mod
Exact Match The mapping is direct, with no qualifiers.

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 F33.1Overview

Is F33.1 (Major depressive disorder, recurrent) a billable code?

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

What is the ICD-9 equivalent of F33.1?

Under the General Equivalence Mappings, major depressive disorder, recurrent, moderate converts to ICD-9-CM 296.32 (recurr depr psychos-mod). The mapping is a direct match.

Footnotes

[1] Chronic - a chronic condition code indicates a condition lasting 12 months or longer and its effect on the patient based on one or both of the following criteria:

  • The condition results in the need for ongoing intervention with medical products,treatment, services, and special equipment
  • The condition places limitations on self-care, independent living, and social interactions.