2027 ICD-10-CM Diagnosis Code F33.0Major depressive disorder, recurrent, mild
ICD-10-CM Codes›F01–F99›F30-F39›F33
- Billable — Valid for Submission
- CC — Complication or Comorbidity
- Chronic Condition
F33.0 is a billable ICD-10-CM diagnosis code for major depressive disorder, recurrent, mild. It is valid on HIPAA claims for fiscal year 2027 (October 1, 2026 through September 30, 2027) and groups to MS-DRG 885. As a secondary diagnosis, it counts as a complication or comorbidity (CC) and moves an inpatient stay to a higher severity level within its MS-DRG family. It does not count, however, when the principal diagnosis is one of 12 closely related codes. Coders also document this condition as mild depression. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Depressive disorders.
F33.0 no longer risk-adjusts for Medicare Advantage: it mapped to HCC 59 under the retired CMS-HCC V24 model through payment year 2025 but maps to no category in the live V28 model. It still risk-adjusts in the PACE (CMS-HCC V22) category 58, ESRD (V21) category 58, ESRD (V24) category 59, and RxHCC Part D (V08) category 132 for payment year 2027.
Code Identity
Code Classification
Medicare Risk Adjustment (HCC)Billing
F33.0 no longer risk-adjusts for Medicare Advantage: it maps to no payment category in the live CMS-HCC V28 model, although it still risk-adjusts in the other CMS models shown below.
Source: CMS Payment Year 2027 risk adjustment mappings and model software. Weights are relative factors, not dollar amounts; a beneficiary's total RAF also includes demographics and interactions. Browse all CMS-HCC categories.
Approximate SynonymsGuidance
Alternate terms and clinical phrases that map to this code.
- Mild depression
- Mild major depression
- Mild recurrent major depression
- Recurrent major depressive episodes
- Recurrent major depressive episodes, mild
- Recurrent mild major depressive disorder co-occurrent with anxiety
Instructional NotesGuidance
Instructions from the official ICD-10-CM Tabular List that apply to F33.0: its own notes plus those printed at F33 and Chapter 5. A note printed at a category, block or chapter applies to every code under it.
Includes
Further defines, or gives examples of, the content of the category.
- recurrent episodes of depressive reaction
- recurrent episodes of endogenous depression
- recurrent episodes of major depression
- recurrent episodes of psychogenic depression
- recurrent episodes of reactive depression
- recurrent episodes of seasonal affective disorder
- recurrent episodes of seasonal depressive disorder
- recurrent episodes of vital depression
- disorders of psychological development
Excludes1
Not coded here: the excluded code is never reported together with this one, unless the two conditions are unrelated.
Excludes2
Not included here: the excluded condition is not part of this code, but a patient may have both, so both codes may be reported.
Source: CMS ICD-10-CM Tabular List. How to read instructional notes.
Referenced in Other NotesGuidance
Instructional notes printed at other codes that name F33.0, its category, or a range that includes it.
Excludes1 5
These codes carry an Excludes1 note naming F33.0: they are not reported together with it, unless the two conditions are unrelated.
- F30 Manic episodemajor depressive disorder, recurrent (F33.-) names F33.-, which includes this code
- F31 Bipolar disordermajor depressive disorder, recurrent (F33.-) names F33.-, which includes this code
- F32 Depressive episoderecurrent depressive disorder (F33.-) names F33.-, which includes this code
- R40.1 Stupordepressive stupor (F31.-, F32.-, F33.-) names F33.-, which includes this code
- R53.8 Other malaise and fatigueexhaustion and fatigue due to recurrent depressive episode (F33-) names F33-, which includes this code
Excludes2 7
These codes carry an Excludes2 note naming F33.0: its condition is not part of those codes, and both may be reported when the patient has both.
- F42 Obsessive-compulsive disorderobsessive-compulsive symptoms occurring in depression (F32.-, F33.-) names F33.-, which includes this code
- F44.2 Dissociative stupordepressive stupor (F32, F33) names F33, which includes this code
- F63.2 Kleptomaniadepressive disorder with stealing (F31.-, F32.-, F33.-) names F33.-, which includes this code
- F06.3 Mood disorder due to known physiological condition
- F90 Attention-deficit hyperactivity disorders
- F91 Conduct disorders
- F93.0 Separation anxiety disorder of childhood
Index to Diseases and InjuriesGuidance
Alphabetical index entries that point to this code.
Disorder (of) See Also: Disease;
Clinical ClassificationClinical
AHRQ’s CCSR groups this code into broader clinical categories.
Clinical InformationClinical
Major Depressive Disorder
disorder in which five (or more) of the following symptoms have been present during the same 2-week period and represent a change from previous functioning; at least one of the symptoms is either (1) depressed mood or (2) loss of interest or pleasure. symptoms include: depressed mood most of the day, nearly every day; markedly diminished interest or pleasure in activities most of the day, nearly every day; significant weight loss when not dieting or weight gain; insomnia or hypersomnia nearly every day; psychomotor agitation or retardation nearly every day; fatigue or loss of energy nearly every day; feelings of worthlessness or excessive or inappropriate guilt; diminished ability to think or concentrate, or indecisiveness, nearly every day; or recurrent thoughts of death, recurrent suicidal ideation without a specific plan, or a suicide attempt. (dsm-5)
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 F33.0 to ICD-9-CMHistory
The closest ICD-9-CM equivalents under the General Equivalence Mappings.
Code HistoryHistory
Questions About F33.0Overview
What is the ICD-10 code for major depressive disorder, recurrent, mild?
The ICD-10-CM code for major depressive disorder, recurrent, mild is F33.0 (sometimes written as F330). It is billable on HIPAA-covered claims from October 1, 2026 through September 30, 2027.
Is F33.0 (Major depressive disorder, recurrent) a billable code?
Yes. This is a billable ICD-10-CM code, specific enough to report major depressive disorder, recurrent, mild on HIPAA-covered claims from October 1, 2026 through September 30, 2027.
What MS-DRG does F33.0 group to?
When major depressive disorder, recurrent, mild is the principal diagnosis on an inpatient stay, it groups to MS-DRG 885 (psychoses), which carries a relative weight of 1.3904. Higher weights mean higher Medicare reimbursement.
Is F33.0 a CC or MCC?
CMS lists F33.0 as a CC (complication or comorbidity) for FY 2027. Reported as a secondary diagnosis, it moves the inpatient stay to a higher-weighted DRG within its severity family. It does not count when the principal diagnosis is one of the 12 closely related codes in its exclusion list.
Can F33.0 be reported with a code from F31?
Not as a rule. The Excludes1 note at F33, which applies to F33.0, lists "bipolar disorder (F31.-)". An Excludes1 note means the excluded code is never reported together with this one; the only exception is when the two conditions are unrelated to each other (Official Guidelines, Section I.A.12.a).
Does F33.0 risk-adjust for Medicare Advantage payment?
Not for Medicare Advantage. F33.0 mapped to HCC 59 in the retired CMS-HCC V24 model, which last determined payment in 2025, but it maps to no category in the live V28 model; see all codes that no longer risk-adjust. It still risk-adjusts in the PACE (CMS-HCC V22) category 58 (Major Depressive/Bipolar/and Paranoid Disorders), ESRD (V21) category 58 (Major Depressive/Bipolar/and Paranoid Disorders), ESRD (V24) category 59 (Major Depressive/Bipolar/and Paranoid Disorders), and RxHCC Part D (V08) category 132 (Depression).
