F32. 9 major depressive disorder, single episode, unspecified.

The diagnosis code F32.9 refers to major depressive disorder, single episode, unspecified. This specific code has been billable since 2016 and can be used to indicate a diagnosis for reimbursement purposes. 

The 2023 edition of the ICD-10-CM F32.9 became effective on October 1, 2022. It is important to note that while this is the American version of the ICD-10-CM F32.9, other international versions of ICD-10 F32.9 may differ.

F32.9:

Depression, unspecified

Depressive disorder

Major depression, single episode

Major depressive disorder in childbirth

Major depressive disorder in pregnancy

Major depressive disorder, single episode

Mood disorder of depressed type

Mood disorder with depressive featureF32.9 - Major depressive disorder, single episode, unspecified

F33.1 - Major depressive disorder, recurrent, moderate

F33.0 - Major depressive disorder, recurrent, mild

F32.1 - Major depressive disorder, single episode, moderate

F33.2 - Major depressive disorder, recurrent, without psychotic feature

F32.0 - Major depressive disorder, single episode, mild

Depression is a mental disorder characterized by persistent feelings of sadness, despair, and loss of energy, making it difficult to cope with daily life. Other symptoms of depression may include feelings of worthlessness, hopelessness, and changes in eating or sleeping patterns, as well as thoughts of suicide. Although depression can affect anyone, it is more common in women and can also be experienced by cancer patients. Effective treatments for depression include antidepressants and talk therapy, and the condition can be caused by a variety of factors, including genetics, environment, psychology, and biochemistry.

Major depression is a more severe form of the disorder, characterized by intense feelings of grief or unhappiness that persist over an extended period. 

 Melancholic depression, a subtype of major depression, is even more severe and can cause vegetative signs. Involutional depression, which often appears during the aging process, is marked by hallucinations, delusions, paranoia, and agitation.

Seasonal affective disorder (SAD) is a form of depression that typically occurs in the winter, while postpartum depression can occur in women after giving birth. Bipolar disorder is another condition that includes depression as one of its components. In contrast, non-clinical depression may be described as feeling down or discouraged without meeting the clinical criteria for depression.

Mild depression, known as dysthymia, is a chronic condition that lasts for two or more years. It may involve periods of feeling depressed without a history of manic or hypomanic episodes. "The blues" are an unpleasant mood state characterized by sadness, despair, or discouragement, often involving low self-esteem, social withdrawal, and somatic symptoms such as eating and sleep disturbance. Although not necessarily pathological, it can be distressing and interfere with everyday life.