F33.9 – Major depressive disorder, recurrent, unspecified
ICD-10-CM 2027 diagnosis code · Mood [affective] disorders
ICD-10-CM code
F33.9
- Code
F33.9(claims format:F339)- Description
- Major depressive disorder, recurrent, unspecified
- Billable
- Yes – valid for HIPAA-covered transactions
- Valid for
- Dates of service October 1, 2026 – September 30, 2027 (FY2027)
- Chapter
- 5. Mental, Behavioral and Neurodevelopmental disorders (F01-F99)
- Block
- F30-F39 Mood [affective] disorders
- Parent codes
- F33
Notes for F33.9
Applicable to:
- Monopolar depression NOS
Notes inherited from parent codes
Instructional notes at a category or block level apply to every code below it.
F33 – Major depressive disorder, recurrent
Includes:
- 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
Index terms for F33.9
Entries in the ICD-10-CM alphabetic index that lead to this code:
- Depression, monopolar
- Melancholia, recurrent
- Episode, depressive, recurrent
- Disorder, depressive, recurrent
- Disorder, depressive, major, recurrent
- Reaction, depressive, affective, recurrent episode
- Involution, involutional, depression, recurrent episode
- Menopause, menopausal, depression, agitated, recurrent episode
- Menopause, menopausal, depression, psychotic, recurrent episode
Related codes in F33
- F33.0 – Major depressive disorder, recurrent, mildBillable
- F33.1 – Major depressive disorder, recurrent, moderateBillable
- F33.2 – Major depressive disorder, recurrent severe without psychotic featuresBillable
- F33.3 – Major depressive disorder, recurrent, severe with psychotic symptomsBillable
- F33.4 – Major depressive disorder, recurrent, in remissionHeader
- F33.8 – Other recurrent depressive disordersBillable
Frequently asked questions
What is ICD-10 code F33.9?
F33.9 is the ICD-10-CM code for major depressive disorder, recurrent, unspecified, in the block F30-F39 (Mood [affective] disorders).
Is F33.9 a billable code?
Yes. F33.9 is a billable/specific code that can be used to indicate a diagnosis for reimbursement purposes.
What category does F33.9 belong to?
It belongs to category F33 – Major depressive disorder, recurrent.
Source: CDC/NCHS ICD-10-CM FY2027 code files, tabular list and index. Reference only – code assignment must follow the official ICD-10-CM guidelines and documentation in the medical record.