F16.983

Hallucinogen use, unspecified with hallucinogen persisting perception disorder (flashbacks)

Billable FY2026 2025-10-01 → 2026-09-30

This is the unspecified option. 2 more specific codes sit alongside it. Worth checking whether the documentation supports one of them.

Exclusions 3 never code together

Excludes1

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

F16code

Includes

Includes

Index entries leading here 2

Disorder (of) — see also Disease
- perception, due to hallucinogens F16.983
- posthallucinogen perception F16.983
Use (of)
- hallucinogen NEC F16.90
  - with
    - perception disorder (flashbacks) F16.983

Alongside this code 2 same parent — F16.98

Additional references

AHA Coding Clinic® Licence required

Official coding advice for this code. Published by the American Hospital Association. Not included in this installation.

CMS22HCC55 CMS28HCC137 ESRD21HCC55 ESRD24HCC55

Presence is a property of the code. Untick a model to hide it everywhere.

Present FY2024–FY2027.