what is ICD 10 code for depression : ICD 10 codes for depression are grouped under many categories, as listed below: F32 - Major depressive disorder , single episode The intent of this category, from what I understand, is to include single episodes of major depression. There are several ICD-10 codes that can be used here, depending on severity, the presence of any associated symptoms, and whether the episode of depression is in partial of full remission (note that F32 is NOT a billable code): F32.0 - Major depressive disorder, single episode, mild F32.1 - Major depressive disorder, single episode, moderate F32.2 - Major depressive disorder, single episode, severe without psychotic features F32.3 - Major depressive disorder, single episode, severe with psychotic features F32.4 - Major depressive disorder, single episode, in partial remission F32.5 - Major depressive disorder, single episode, in full remission F32.8 - Other depressive episodes F32.9 - Major dep...