Major depressive disorder According to the American Psychiatric Association, major depressive disorder can be seen in patients who have suffered a depressive episode lasting at least two weeks, as manifested by at least five of the following symptoms: depressed mood, loss of interest or pleasure in most or all activities, insomnia or hypersomnia, change in appetite or weight, psychomotor retardation or agitation, low energy, poor concentration, thoughts of worthlessness or guilt, and recurrent thoughts about death or suicidal ideation. Major depression is highly recurrent, with recurrent episodes occurring in 50% or more of patients. Remission and recovery from major depression Whether or not a patient is being treated for depression (e.g., counseling and/or medication), remission can be defined as a level of depressive symptoms basically indistinguishable from that in someone who has never been depressed. When reporting history of major depressive disorder, instead of coding V1...