F31.3
Non-billableBipolar disorder, current episode depressed, mild or moderate severity
F31.3 is the ICD-10-CM code for Bipolar disorder, current episode depressed, mild or moderate severity. It is a non-billable category code — use a more specific child code such as F31.30 for billing.
F01-F99 Mental, Behavioral and Neurodevelopmental disorders
The patient is currently depressed, as in a depressive episode of either mild or moderate severity (F32.0 or F32.1), and has had at least one authenticated hypomanic, manic, or mixed affective episode in the past.
No additional coding notes for this code.
Frequently asked questions
Source: CMS ICD-10-CM FY2026. For informational purposes only — not medical advice. See our medical disclaimer.
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