F31.32 Bipolar disorder, current episode depressed, moderate

ICD-10-CM F31.32: Bipolar disorder, current episode depressed, moderate

ICD-10-CM code F31.32 identifies a current moderate depressive episode in a patient with established bipolar disorder. The F31 category uses current episode type, severity, psychotic features, and remission status to classify bipolar conditions. This specific code is billable and distinct from mild, severe, or hypomanic bipolar episodes. 3 4 5

Plain-language overview

Bipolar disorder is a potentially lifelong condition characterized by episodes of mania or hypomania alternating with depression, and F31.32 specifically identifies a current moderate depressive episode within this established diagnosis. 2 4

What this code represents

F31.32 is a billable ICD-10-CM code representing a current moderate depressive episode of bipolar disorder, occupying a specific position within the broader F31 classification hierarchy. 3 4 5

Coding details

The F31 bipolar disorder code family structurally crosses current episode type, severity, psychotic features, and remission status, distinguishing F31.32 from hypomanic, severe, or mixed episode codes. 4 5

Documentation considerations

Diagnostic criteria for F31.32 include the presence of five or more depressive symptoms occurring nearly daily for at least two weeks, and accurate documentation supports appropriate care planning. 4 6

Clinical context

Bipolar disorder is often misdiagnosed initially, making inquiry into past hypomanic or manic episodes particularly important for patients with early onset of their first depressive episode or a family history of the condition. 1

Suicidal and self-harm risk has priority in managing patients with bipolar disorder who present with an acute depressive episode because most suicide deaths in these patients occur during this phase. 1

What the sources add

Clinical guidelines from the National Institute for Health and Care Excellence recommend discussing longer-term management after each episode of bipolar depression, while noting that a person developing moderate bipolar depression may be offered specific pharmacological interventions. 2

While clinical sources outline evidence-based management and treatment interventions for bipolar depression, coding sources establish that F31.32 serves as a specific billable code for administrative and diagnostic precision. 2 4

Sources

1. Bookshelf — ncbi.nlm.nih.gov; accessed 2026-07-25.
2. Bookshelf — ncbi.nlm.nih.gov; accessed 2026-07-25.
3. EVS Explore — evsexplore.semantics.cancer.gov; accessed 2026-07-25.
4. F31.32 vs Other Bipolar Codes: Making the Right Diagnostic Choice - Yung Sidekick — yung-sidekick.com; accessed 2026-07-25.
5. Bipolar Disorder ICD-10 Codes: Complete F31 | Behave Health — behavehealth.com; accessed 2026-07-25.
6. F31.32 - ICD-10 code for bipolar disorder, current episode depressed, moderate — upheal.io; accessed 2026-07-25.