According to the DSM-IV, DD-NOS encompasses "any depressive disorder that does not meet the criteria for a specific disorder." In the DSM-5, it is called unspecified depressive disorder. Examples of disorders in this category include those sometimes described as minor depressive disorder and recurrent brief depression.
A new code effective October 1, 2021 for “depression NOS” or “unspecified depression” is F32. A Depression unspecified. The new code F32. A will enable the distinction between patients diagnosed with “depression” and patients diagnosed with other, more specific types of depression.
F32. Major depressive disorder, single episode The ICD‐10 classification of Mental and Behavioral Disorders developed in part by the American Psychiatric Association classifies depression by code.
0 Recurrent depressive disorder, current episode mild. A disorder characterized by repeated episodes of depression, the current episode being mild, as in F32. 0, and without any history of mania.
ICD-10 code F32. 89 for Other specified depressive episodes is a medical classification as listed by WHO under the range - Mental, Behavioral and Neurodevelopmental disorders .
ICD-10 | Major depressive disorder, single episode, unspecified (F32. 9)
Major depressive disorder, recurrent, moderate F33. 1 is a billable/specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes.