2025 ICD-10-CM Diagnosis Code F31

Bipolar disorder

F31 should not be used for reimbursement purposes as there are multiple codes below it that contain a greater level of detail.
The 2025 edition of ICD-10-CM F31 became effective on October 1, 2024.
This is the American ICD-10-CM version of F31 – other international versions of ICD-10 F31 may differ.

Type 1 Excludes

Type 2 Excludes

Includes

The following code(s) above F31 contain annotation back-references

that may be applicable to F31:

Clinical Information

A major affective disorder marked by severe mood swings (manic or major depressive episodes) and a tendency to remission and recurrence.
A major affective disorder marked by severe mood swings (manic or major depressive episodes) and a tendency to remission and recurrence. (mesh)
Bipolar disorder is a serious mental illness. People who have it go through unusual mood changes. They go from very happy, “up,” and active to very sad and hopeless, “down,” and inactive, and then back again. They often have normal moods in between. The up feeling is called mania. The down feeling is depression. The causes of bipolar disorder aren’t always clear. It runs in families. Abnormal brain structure and function may also play a role. Bipolar disorder often starts in a person’s late teen or early adult years. But children and adults can have bipolar disorder too. The illness usually lasts a lifetime.if you think you may have it, tell your health care provider. A medical checkup can rule out other illnesses that might cause your mood changes.if not treated, bipolar disorder can lead to damaged relationships, poor job or school performance, and even suicide. However, there are effective treatments to control symptoms: medicine and talk therapy. A combination usually works best.

Code History

2016 (effective 10/1/2015): New code (first year of non-draft ICD-10-CM)
2017 (effective 10/1/2016): No change
2018 (effective 10/1/2017): No change
2019 (effective 10/1/2018): No change
2020 (effective 10/1/2019): No change
2021 (effective 10/1/2020): No change
2022 (effective 10/1/2021): No change
2023 (effective 10/1/2022): No change
2024 (effective 10/1/2023): No change
2025 (effective 10/1/2024): No change

Code annotations containing back-references to F31: