Bipolar II Disorder 135
With rapid cycling (pp. 150–151)
With mood-congruent psychotic features (p. 152)
With mood-incongruent psychotic features  (p. 152)
With catatonia  (p. 152). Coding note:  Use additional code 293.89 (F06.1).
With peripartum onset  (pp. 152–153)
With seasonal pattern  (pp. 153–154): Applies only to the pattern of major depressive
episodes.
Specify course if full criteria for a mood episode are not currently met:
In partial remission  (p. 154)
In full remission  (p. 154)
Specify severity if full criteria for a mood episode are currently met:
Mild (p. 154)
Moderate  (p. 154)
Severe (p. 154)
Diagnostic Features
Bipolar II disorder is characterized by a clin ical course of recurr ing mood episodes con-
sisting of one or more majo r depressive episodes (Criteria A–C under “Major Depressive
Episode”) and at least one hypomanic epis ode (Criteria A–F under “Hypomanic Epi-
sode”). The major depressive episode must last at least 2 weeks, and the hypomanic epi-
sode must last at least 4 days, to meet the di agnostic criteria. During the mood episode(s),
the requisite number of symptoms  must be present most of th e day, nearly every day, and
represent a noticeable change from usual behavior and functioning. The presence of a
manic episode during the course of illness pr ecludes the diagnosis of bipolar II disorder
(Criterion B under “Bipolar II Disorder”). Episodes of substance/medication-induced de-