ICD-10 Code F32.0 – Major depressive disorder, single episode, mild (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code F32.0 – Major depressive disorder, single episode, mild
What it is
F32.0 identifies a single episode of major depressive disorder with mild severity. Use it when the patient meets criteria for a major depressive episode, but symptoms are fewer or less intense than moderate or severe depression.
Clinical signs
Typical findings include depressed mood, loss of interest, fatigue, sleep or appetite disturbance, and reduced concentration. Clinical features vary; refer to documentation for symptom count, functional impact, and whether psychotic features are absent.
When to use this code
Use F32.0 when the record clearly documents a first or single depressive episode and the clinician describes it as mild. It also fits when symptoms are present but the note shows limited impairment and no prior history of recurrent depressive episodes.
Do not use for
Do not use this code for recurrent major depressive disorder, bipolar depression, or depressive symptoms that do not meet full major depressive criteria. Check documentation if the severity, episode type, or diagnosis is unclear.
Coding tip
Confirm both “single episode” and “mild” are documented before assigning F32.0.