Mood Disorders refers to a super ordinate grouping of Bipolar and Depressive Disorders. Mood disorders are defined according to particular types of mood episodes and their pattern over time. The primary types of mood episodes are Depressive episode, Manic episode, Mixed episode, and Hypomanic episode. Mood episodes are not independently diagnosable entities, and therefore do not have their own diagnostic codes. Rather, mood episodes make up the primary components of most of the Depressive and Bipolar Disorders.
Bipolar or related disorders
Bipolar and related disorders are episodic mood disorders defined by the occurrence of Manic, Mixed or Hypomanic episodes or symptoms. These episodes typically alternate over the course of these disorders with Depressive episodes or periods of depressive symptoms.
Symptomatic and course presentations for mood episodes in mood disorders