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F31.31

✓ Billable

Bipolar disorder, current episode depressed, mild

Mental, Behavioral and Neurodevelopmental disorders (F01-F99)

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✅ No additional coding notes for F31.31

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Code Information

CodeF31.31
BillableYes
ParentF31.3
CategoryMental, Behavioral and Neurodevelopmental disorders (F01-F99)
Excludes10 rule(s)
Excludes20 note(s)

Data Source

CMS ICD-10-CM 2026 Tabular List

Updated October 1, 2025 (FY2026)