tional diagnosis of 303.90 severe alcohol use diso rder is also given. If the substance/medi-
cation-induced neurocognitive disorder occurs without a comorbid substance use disorder
(e.g., after a sporadic heavy use of inhalants) , no accompanying substance use disorder is
noted (e.g., 292.82 inhalant-induced mild neurocognitive disorder). 
ICD-10-CM. The name of the substance/medicati on-induced neurocognitive disorder
begins with the specific substance (e.g., alcoho l) that is presumed to be causing the neuro-
cognitive symptoms. The diagnostic code is sele cted from the table included in the criteria
set, which is based on the drug class and pres ence or absence of a comorbid substance use
disorder. For substances that do  not fit into any of the cla sses, the code for “other sub-
stance” should be used; and in cases in which a substance is judged to be an etiological fac-
tor but the specific class of substance is unknown, the category “unknown substance”
should be used.
When recording the name of the disorder, the comorbid substa nce use disorder (if any) is
listed first, followed by the word “with,” followe d by the name of the disorder (i.e., [specific
substance]-induced major neurocognitive diso rder or [specific substance]-induced mild
neurocognitive disorder), follow ed by the type in the case of  alcohol (i.e., nonamnestic-con-
fabulatory type, amnestic-confabulatory type),  followed by specification of duration (i.e.,
persistent). For example, in the case of pers istent amnestic-confabulatory symptoms in a