F32.1 — Major Depressive Disorder, Single Episode, Moderate

Clinical Description

F32.1 identifies a single episode of major depressive disorder at moderate severity. Symptoms exceed the minimum diagnostic threshold and produce noticeable functional impairment in social, occupational, or academic domains. Documentation must support the moderate severity level distinctly from mild or severe.

Key Symptoms to Document

When using F32.1, your documentation should reference these symptoms:

• Persistent depressed mood most of the day
• Marked anhedonia across multiple life domains
• Significant changes in appetite or weight
• Psychomotor retardation or agitation observable by others
• Insomnia or hypersomnia nearly every day
• Difficulty with concentration, memory, or decision-making

Common Interventions to Document

Evidence-based interventions typically documented with this diagnosis:

• Cognitive Behavioral Therapy (CBT)
• SSRI or SNRI antidepressant pharmacotherapy
• Behavioral Activation
• Interpersonal Therapy (IPT)
• Combined psychotherapy and pharmacotherapy

CPT Code Pairings

Common CPT codes used when billing with F32.1:

• 90791 — Psychiatric diagnostic evaluation
• 90834 — Individual psychotherapy, 45 minutes
• 90837 — Individual psychotherapy, 60 minutes
• 90833 — Psychotherapy add-on to E/M, 30 minutes
• 96127 — Brief emotional/behavioral assessment

Documentation Tips

• Specify the symptom count and which DSM-5 criteria are met; moderate severity typically involves 6-7 of 9 symptoms.
• Describe functional impairment concretely: missed workdays, social withdrawal, decline in self-care.
• Differentiate from mild (greater impairment, more symptoms) and severe (no psychotic features, lower lethality risk).
• Confirm this is a first lifetime episode; if any prior episodes exist, use F33.x instead.
• Document PHQ-9 score in the moderate range (10-14) or provide clinical rationale for severity rating.

Differential Diagnosis Considerations

When documenting F32.1, consider and rule out:

• Major depressive disorder, recurrent episode (F33.1)
• Bipolar II disorder, depressive episode (F31.81)
• Persistent depressive disorder (F34.1)
• Depressive disorder due to another medical condition (F06.31)
• Substance/medication-induced depressive disorder (F1x.x4)

Screening Tools

Standardized measures commonly used with this diagnosis:

• PHQ-9 (Patient Health Questionnaire-9)
• BDI-II (Beck Depression Inventory-II)
• Columbia Suicide Severity Rating Scale (C-SSRS)
• QIDS-SR (Quick Inventory of Depressive Symptomatology)