F19.9Other psychoactive substance use, unspecified

F19.9 is the ICD-10-CM diagnosis code for other psychoactive substance use, unspecified. It belongs to category F19 (other psychoactive substance related disorders), block F10-F19 (mental and behavioral disorders due to psychoactive substance use) and chapter 5 (mental, Behavioral and Neurodevelopmental disorders). It is a header code, so it can't be reported by itself; one of its 10 subcodes must be used instead.

Within F19, choose F19.9 (use, unspecified) only when documentation doesn't support a more specific option: abuse (F19.1) and dependence (F19.2).

To report this condition, pick the subcode that matches the documentation: F19.90 (uncomplicated), F19.91 (in remission), F19.92 (with intoxication), F19.93 (with withdrawal), F19.94 (with psychoactive substance-induced mood disorder), F19.95 (with psychoactive substance-induced psychotic disorder), F19.96 (with psychoactive substance-induced persisting amnestic disorder), F19.97 (with psychoactive substance-induced persisting dementia) and 2 more.

Don't report F19.9 together with the conditions in its Excludes1 note: other psychoactive substance abuse (F19.1-) and other psychoactive substance dependence (F19.2-).

It has been part of ICD-10-CM since the code set took effect on October 1, 2015 and hasn't changed since.