F31 is a non-billable/non-specific diagnosis code from the 2026 ICD-10-CM used to classify the following condition: Bipolar disorder.
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Bipolar I disorder
Bipolar type I disorder
Manic-depressive illness
Manic-depressive psychosis
Manic-depressive reaction
Seasonal bipolar disorder
Cyclothymia (F34.0)
Bipolar disorder, current episode hypomanic
Bipolar disorder, current episode manic without psychotic features
Bipolar disorder, current episode manic severe with psychotic features
Bipolar disorder, current episode depressed, mild or moderate severity
Bipolar disorder, current episode depressed, severe, without psychotic features
Bipolar disorder, current episode depressed, severe, with psychotic features
Bipolar disorder, current episode mixed
Bipolar disorder, currently in remission
Other bipolar disorders
Bipolar disorder, unspecified
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