ICD-10-CM diagnosis code
F31.61 Bipolar disorder, current episode mixed, mild
- Billable
- Yes, a complete code (FY2026)
- Category
- F31 Bipolar affective disorder
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Other codes in F31
28 complete codes in this category.
- F31.30Bipolar disorder, current episode depressed, mild or moderate severity, unspecified
- F31.31Bipolar disorder, current episode depressed, mild
- F31.32Bipolar disorder, current episode depressed, moderate
- F31.4Bipolar disorder, current episode depressed, severe, without psychotic features
- F31.5Bipolar disorder, current episode depressed, severe, with psychotic features
- F31.60Bipolar disorder, current episode mixed, unspecified
- F31.61Bipolar disorder, current episode mixed, mild
- F31.62Bipolar disorder, current episode mixed, moderate
- F31.63Bipolar disorder, current episode mixed, severe, without psychotic features
- F31.64Bipolar disorder, current episode mixed, severe, with psychotic features
- F31.70Bipolar disorder, currently in remission, most recent episode unspecified
- F31.71Bipolar disorder, in partial remission, most recent episode hypomanic
Documentation tips
- Make sure the note supports every element of the title, “Bipolar disorder, current episode mixed, mild”: each detail in it should be traceable to the history, examination or assessment.
- Code to the highest specificity the documentation supports. If a detail is missing from the note, add it to the note rather than choosing a less specific code by default.
- Check the Tabular List and official guidelines for instructional notes (“code first”, “use additional code”, Excludes1/Excludes2) that apply to F31.
The international WHO ICD-10 also has F31, with its inclusion and exclusion notes; titles and detail can differ from ICD-10-CM.
ICD-10-CM is developed by the National Center for Health Statistics (NCHS), Centers for Disease Control and Prevention, U.S. Department of Health and Human Services, and is based on the WHO ICD-10. Codes and titles are reproduced unchanged from the FY2026 code list (effective 1 October 2025). Their use here does not imply endorsement by CDC, HHS or the U.S. Government. Changes effective on or after 1 October 2026 may not be reflected yet; check the current release at cdc.gov or cms.gov before submitting claims.
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