ICD-10 Code F31.75 – Bipolar disorder, in partial remission, most recent episode depressed (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code F31.75 – Bipolar disorder, in partial remission, most recent episode depressed
What it is
This code identifies bipolar disorder with a most recent depressive episode that is now in partial remission. You use it when the patient still has some symptoms, but the full depressive episode has improved.
Clinical signs
Expect a documented bipolar disorder history plus residual depressive symptoms such as low mood, reduced interest, or fatigue. Clinical features vary; refer to documentation for the current remission status and episode details.
When to use this code
Use this code when the provider states bipolar disorder is in partial remission and the latest episode was depressed. It fits follow-up visits where symptoms persist but no longer meet full episode criteria. Check documentation if the note does not clearly specify remission.
Do not use for
Do not use it for bipolar disorder in full remission or when the most recent episode is manic, hypomanic, or mixed. Do not assume partial remission unless the record says so.
Coding tip
Match both elements exactly: partial remission and most recent episode depressed.