F33.9

Billable

Major depressive disorder, recurrent, unspecified

F33.9 is the ICD-10-CM code for Major depressive disorder, recurrent, unspecified. It is a billable, specific code valid for reimbursement.

Status
Billable
Chapter
F01-F99
Parent
F33
Edition
FY2026

F01-F99 Mental, Behavioral and Neurodevelopmental disorders

What this means — in plain language

MedlinePlus · NIH

What is 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. You may not know why you feel this way, but even basic daily activities such as sleeping, eating, or working may become difficult. Depression often needs…

Read more about Depression at MedlinePlus ↗

Source: U.S. National Library of Medicine (MedlinePlus). Informational only — not medical advice.

Includes

  • Monopolar depression NOS

Frequently asked questions

What is ICD-10 code F33.9?
F33.9 is the ICD-10-CM code for "Major depressive disorder, recurrent, unspecified". It falls under F01-F99 Mental, Behavioral and Neurodevelopmental disorders.
Is F33.9 a billable code?
Yes — F33.9 is a billable, specific ICD-10-CM code valid for reimbursement.

Source: CMS ICD-10-CM FY2026. For informational purposes only — not medical advice. See our medical disclaimer.

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