Substance/Medication-Induced Depressive Disorder 177
code, for ICD-9-CM a separate diagnostic code  is given for the substance use disorder. For
example, in the case of depressive symptoms  occurring during withdrawal in a man with
a severe cocaine use disorder, the diagnosis is 292.84 cocaine-induced depressive disorder,
with onset during with drawal. An additional diagnosis of 304.20 severe cocaine use dis-
order is also given. When more than one substance is judged to play a significant role in
the development of depressive mood symptoms , each should be listed separately (e.g.,
292.84 methylphenidate-induced depressive disorder, with onset during withdrawal;
292.84 dexamethasone-induced depressive diso rder, with onset during intoxication).
ICD-10-CM. The name of the substance/medication -induced depressive disorder begins
with the specific substance (e.g., cocaine, de xamethasone) that is presumed to be causing
the depressive symptoms. The diagnostic code is selected from the table included in the
criteria set, which is based on the drug class and presence or absence of a comorbid sub-
stance use disorder. For substances that do no t fit into any of the cl asses (e.g., dexameth-
asone), the code for “other substance” should be used; and in cases in which a substance is
judged to be an etiological factor but the spec ific class of substance is unknown, the category
“unknown substance” should be used.
When recording the name of the disorder, the comorbid substance use disorder (if any) is
listed first, followed by the word “with,” follo wed by the name of the substance-induced de-
pressive disorder, followed by the specification of onset (i.e., onset during intoxication, onset