ICD-10 Code F31.32 – Bipolar disorder, current episode depressed, moderate (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code F31.32 – Bipolar disorder, current episode depressed, moderate
What it is
This code identifies bipolar disorder with the current mood episode being depression at a moderate level. You use it when documentation clearly states bipolar disorder and a depressed episode that is not mild or severe.
Clinical signs
Typical findings include low mood, reduced interest, fatigue, sleep change, and impaired concentration. Clinical features vary; refer to documentation for the episode severity and any bipolar history.
When to use this code
Use this code when the record documents bipolar disorder and specifies the current episode as depressed and moderate. It is appropriate when the provider links the depressive episode to bipolar illness and does not describe psychosis, remission, or a different severity.
Do not use for
Do not use this code for bipolar disorder in remission, mania, or mixed episodes. Check documentation if the record does not clearly state moderate depression or if another depressive severity is recorded.
Coding tip
Verify that the provider documents both bipolar disorder and the current depressed episode before assigning F31.32.