F16.98Hallucinogen use, unspecified with other specified hallucinogen-induced disorder

F16.98 is the ICD-10-CM diagnosis code for hallucinogen use, unspecified with other specified hallucinogen-induced disorder. It belongs to category F16 (hallucinogen 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 3 subcodes must be used instead.

Within F16.9, choose F16.98 (with other specified hallucinogen-induced disorder) only when documentation doesn't support a more specific option: uncomplicated (F16.90), in remission (F16.91), with intoxication (F16.92), with hallucinogen-induced mood disorder (F16.94), with hallucinogen-induced psychotic disorder (F16.95) and with unspecified hallucinogen-induced disorder (F16.99).

To report this condition, pick the subcode that matches the documentation: F16.980 (disorder), F16.983 ((flashbacks)) and F16.988 (disorder).

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