A man comes in and indicates he is suffering from depression

A man comes in and indicates he is suffering from depression. He tells you he has felt this way for several months. He appears to have a flat affect, some tearfulness, and tells you he is not sleeping well. In the course of the interview, you learn that he is an intermittent cocaine user. He tells you he tried unsuccessfully to quit but wasn’t successful. What chapter or chapters would you turn to? ____________________. Do you think this man has two disorders or one? How do you code these two disorders?