vere secobarbital use disorder . See the coding note for the substance-specific intoxication
and withdrawal syndromes for the actual coding options.
For substances that do not fit into any of the cl asses (e.g., anabolic steroids), the appropriate
code for “other substance intoxication” should be used and the specific substance indicated
(e.g., 292.89 [F19.929] anabolic steroid intoxication). If the substance taken by the individual is
unknown, the code for the class “other (or unknown)” should be used (e.g., 292.89 [F19.929]
unknown substance intoxication). If there are sy mptoms or problems associated with a partic-
ular substance but criteria are not met for any of  the substance-specific disorders, the unspec-
ified category can be used (e.g., 292.9 [F12.99] unspecified cannabis-related disorder).
As noted above, the substance-related codes in ICD-10-CM combine the substance use dis-
order aspect of the clinical picture and the su bstance-induced aspect into a single combined
code. Thus, if both heroin withdrawal and modera te heroin use disorder are present, the single
code F11.23 is given to cover both presentati ons. In ICD-9-CM, separate diagnostic codes
(292.0 and 304.00) are given to indicate withdr awal and a moderate heroin use disorder, re-
spectively. See the individual substance-specific  sections for additional coding information. 
Substance/Medication-Induced Mental Disorders
The substance/medication-induced mental di sorders are potentially severe, usually tem-
porary, but sometimes persisti ng central nervous system (C NS) syndromes that develop
in the context of the effects of substances of abuse, medications, or several toxins. They are