ICD-10 Code F31.63 – Bipolar disorder, current episode mixed, severe, without psychotic features (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code F31.63 – Bipolar disorder, current episode mixed, severe, without psychotic features
What it is
F31.63 identifies bipolar disorder with a mixed episode, meaning manic and depressive symptoms occur together. The episode is severe, but there are no psychotic features documented.
Clinical signs
You may see elevated or irritable mood alongside depressed mood, agitation, racing thoughts, reduced sleep, and impaired judgment. Clinical features vary; refer to documentation for severity and the absence of psychosis.
When to use this code
Use this code when the record clearly states bipolar disorder, current episode mixed, severe, without psychotic features. It fits encounters where both manic and depressive symptoms are active and the clinician documents the episode as severe. Check documentation if psychosis is mentioned or the episode type is unclear.
Do not use for
Do not use F31.63 if the episode is not mixed, not severe, or includes psychotic features. Also avoid it when the chart only documents bipolar disorder without current episode details.
Coding tip
Confirm the current episode, severity, and absence of psychosis in the provider note before assigning F31.63.