ICD-10-CM > F01-F99 > F10-F19 > F16 > F16.9 > F16.98 F16.98 Hallucinogen use, unspecified with other specified hallucinogen-induced disorder Non-Billable/Non-Specific Codes F16.980Hallucinogen use, unspecified with hallucinogen-induced anxiety disorderF16.983Hallucinogen use, unspecified with hallucinogen persisting perception disorder (flashbacks)F16.988Hallucinogen use, unspecified with other hallucinogen-induced disorder