ICD-10 Code F33.40 – Major depressive disorder, recurrent, in remission, unspecified (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code F33.40 – Major depressive disorder, recurrent, in remission, unspecified
What it is
This code identifies a recurrent major depressive disorder that is currently in remission. “Unspecified” means the record does not state whether remission is partial or full.
Clinical signs
Symptoms of a major depressive episode are not currently active, or are largely controlled. Clinical features vary; refer to documentation for the remission status and whether any residual depressive symptoms remain.
When to use this code
Use F33.40 when the provider documents recurrent major depressive disorder and notes that the patient is in remission, but does not specify partial or full remission. It is appropriate for follow-up visits, maintenance care, or history review when the diagnosis remains active in the chart.
Do not use for
Do not use this code for a single episode of depression, an active major depressive episode, or when the record clearly states partial or full remission. Check documentation if the recurrence or remission status is unclear.
Coding tip
Code the documented remission status exactly; if the note distinguishes partial or full remission, use the more specific code.