The presence of major depressive disorder, dysthymic disorder or depression not otherwise specified where:
(i)major depressive disorder is either a single episode or recurrent episode as defined in DSM-IV; and
(ii)dysthymic disorder, as defined in DSM-IV, is a chronic mood disturbance, of at least two years duration, involving depressed mood, or loss of interest or pleasure, with manifestation of the symptoms used to diagnose major depression such as neurovegative signs, social withdrawal, cognitive impairment and suicidal ideation; and
(iii)depression not otherwise specified, such as minor depressive disorder and recurrent brief depressive disorder, as defined in DSM-IV, includes disorders with depressive features that do not meet the DSM-IV diagnostic criteria for other specific mood disorders, attracting ICD-9-CM code 296.2, 296.3, 300.4 or 311.”