524 Substance-Related and Addictive Disorders
Specify the particular hallucinogen.
Specify if:
In early remission:  After full criteria for other hallucinogen use disorder were previ-
ously met, none of the criteria for other hallucinogen use disorder have been met for
at least 3 months but for less than 12 months (with the exception that Criterion A4,
“Craving, or a strong desire or urge to use the hallucinogen,” may be met).
In sustained remission:  After full criteria for other hallucinogen use disorder were
previously met, none of the criteria for other hallucinogen use disorder have been met
at any time during a period of 12 months or longer (with the exception that Criterion A4,
“Craving, or a strong desire or urge to use the hallucinogen,” may be met).
Specify if:
In a controlled environment:  This additional specifier is used if the individual is in an
environment where access to hallucinogens is restricted.
Coding based on current severity:  Note for ICD-10-CM codes: If a hallucinogen intoxication
or another hallucinogen-induced mental disorder is also present, do not use the codes below
for hallucinogen use disorder. Instead, the comorb id hallucinogen use disorder is indicated in
the 4th character of the hallucinogen-induced disorder code (see the coding note for halluci-
nogen intoxication or specific hallucinogen-induced mental disorder). For example, if there is
comorbid hallucinogen-induced psychotic disorder and hallucinogen use disorder, only the
hallucinogen-induced psychotic disorder code is given, with the 4th character indicating wheth-
er the comorbid hallucinogen use disorder is mild, moderate, or severe: F16.159 for mild hal-