2026 ICD-10-CM Diagnosis Code F33.1Major depressive disorder, recurrent, moderate
ICD-10-CM Codes›F01–F99›F30-F39›F33
- Billable — Valid for Submission
- CC — Complication or Comorbidity
- Risk Adjusts — HCC 155
- Chronic Condition
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) 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 moderate depression. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Depressive disorders.
For Medicare Advantage risk adjustment, F33.1 maps to CMS-HCC Category 155 (Major Depression, Moderate or Severe, without Psychosis) under the V28 model, adding a risk factor of about 0.299 for a community, non-dual, aged beneficiary in payment year 2026.
Code Identity
Code Classification
Medicare Risk Adjustment (HCC)Billing
F33.1 maps to a payment category in the CMS-HCC model used to risk-adjust Medicare Advantage payments. Weights are the published community factors for payment year 2026.
Source: CMS Payment Year 2026 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.
- 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.
Disorder (of) See Also: Disease;
Clinical ClassificationClinical
AHRQ’s CCSR groups this code into broader clinical categories.
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.
Code HistoryHistory
Questions About F33.1Overview
What is the ICD-10 code for major depressive disorder, recurrent, moderate?
The ICD-10-CM code for major depressive disorder, recurrent, moderate is F33.1 (sometimes written as F331). It is billable on HIPAA-covered claims from October 1, 2025 through September 30, 2026.
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 MS-DRG does F33.1 group to?
When major depressive disorder, recurrent, moderate is the principal diagnosis on an inpatient stay, it groups to MS-DRG 885 (psychoses), which carries a relative weight of 1.3968. Higher weights mean higher Medicare reimbursement.
Is F33.1 a CC or MCC?
CMS lists F33.1 as a CC (complication or comorbidity) for FY 2026. 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.
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.
What HCC is F33.1?
F33.1 (major depressive disorder, recurrent, moderate) maps to CMS-HCC Category 155 (Major Depression, Moderate or Severe, without Psychosis), commonly written as HCC 155, in the CMS-HCC V28 model used for Medicare Advantage risk adjustment in payment year 2026. It mapped to HCC 59 under the retired V24 model. It also maps in the PACE (CMS-HCC V22), ESRD (V21), and ESRD (V24) models. In the Part D prescription drug model it maps to RxHCC 132.
Does F33.1 risk-adjust for Medicare Advantage payment?
Yes. When documented and reported on a Medicare Advantage encounter, F33.1 adds a risk adjustment factor of about 0.299 to the beneficiary's RAF score for a community, non-dual, aged enrollee (published V28 weights range from 0.108 to 0.316 depending on the payment segment). A more severe related category (HCC 151, HCC 152, HCC 153, and HCC 154) supersedes it when both are reported. See the full factor table on the HCC 155 category page.
