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F33.9 · Billable

2026 ICD-10-CM Diagnosis Code F33.9

Major depressive disorder, recurrent, unspecified

About F33.9

Code

F33.9

Description

Major depressive disorder, recurrent, unspecified

Billable

Yes — billable on its own

Parent code

F33 (Major depressive disorder, recurrent)

Category

F30-F39 — Mood [affective] disorders

Set

ICD-10-CM 2026

Clinical context

Inherited from F33 (Major depressive disorder, recurrent)

F33 codes recurrent major depressive disorder — two or more discrete depressive episodes separated by at least two months of partial or full remission. Track episode count and current severity carefully; this is one of the most billed mental-health code families.

Code details

Code attributes

  • Non-billable/Non-specific code

Type 1 Excludes

  • Bipolar disorder (F31.-)
  • Manic episode (F30.-)

Coding rules

  • Confirm recurrence — F33 requires a documented history of at least one prior major depressive episode. Without that history, code F32 instead.
  • Document current severity — Mild (F33.0), moderate (F33.1), severe without psychotic features (F33.2), severe with psychotic features (F33.3).
  • Capture remission state — Partial remission (F33.41) and full remission (F33.42) are coded separately from active episode codes.

Sources

  • Centers for Medicare & Medicaid Services — 2026 ICD-10-CM
  • AAPC — ICD-10-CM Code Lookup
  • CDC — ICD-10-CM Official Guidelines for Coding and Reporting

This reference is provided for billing and documentation guidance only. It is not medical advice. For clinical decision-making, consult the current CMS ICD-10-CM Official Guidelines for Coding and Reporting, and verify code applicability against the patient's documented clinical findings.

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