David Baxter PhD
Late Founder
Bipolar I Disorder
Diagnosis of this Bipolar Disorder requires at least one Manic or Mixed episode, but there may be episodes of Hypomania or Major Depression as well. (This diagnosis conforms to the classic concept of manic depressive illness.)
Bipolar II Disorder
Diagnosis of this Bipolar Disorder requires neither a Manic nor a Mixed Episode, but does require at least one episode of hypomania in addition to an episode of Major Depression.
Diagnosis of this Bipolar Disorder requires at least one Manic or Mixed episode, but there may be episodes of Hypomania or Major Depression as well. (This diagnosis conforms to the classic concept of manic depressive illness.)
Bipolar II Disorder
Diagnosis of this Bipolar Disorder requires neither a Manic nor a Mixed Episode, but does require at least one episode of hypomania in addition to an episode of Major Depression.
Diagnostic criteria for 296.89 Bipolar II Disorder
A. Presence (or history) of one or more Major Depressive Episodes.
B. Presence (or history) of at least one Hypomanic Episode.
C. There has never been a Manic Episode or a Mixed Episode.
D. The mood symptoms in Criteria A and B are not better accounted for by Schizoaffective Disorder and are not superimposed on Schizophrenia, Schizophreniform Disorder, Delusional Disorder, or Psychotic Disorder Not Otherwise Specified.
E. The symptoms cause clinically significant distress or impairment in social, occupational, or other important areas of functioning.