F16.90
Hallucinogen use, unspecified, uncomplicated
Billable FY2026 2025-10-01 → 2026-09-30
This is the unspecified option. 6 more
specific codes sit alongside it. Worth
checking whether the documentation supports one of them.
Exclusions 3 never code together
F01-F99chapter
Excludes2
- symptoms, signs and abnormal clinical laboratory findings, not elsewhere classified (R00-R99)R00-R99
Excludes1 — never code together. The excluded condition and this one are mutually exclusive.
Excludes2 — not included here, but the patient may have both. Code both when documented.
Instructional notes 4
Index entries leading here 2
Alongside this code 6 same parent — F16.9
F16.91 Hallucinogen use, unspecified, in remission F16.92 Hallucinogen use, unspecified with intoxication category F16.94 Hallucinogen use, unsp w hallucinogen-induced mood disorder F16.95 Hallucinogen use, unsp w psychotic disorder category F16.98 Hallucinogen use, unsp w oth hallucinogen-induced disorder category F16.99 Hallucinogen use, unsp w unsp hallucinogen-induced disorder
Additional references
AHA Coding Clinic® Licence required
Official coding advice for this code. Published by the American Hospital Association. Not included in this installation.