F16

Hallucinogen related disorders

Not billable — category only FY2026 2025-10-01 → 2026-09-30

Exclusions 1 never code together

F01-F99chapter

Excludes2

symptoms, signs and abnormal clinical laboratory findings, not elsewhere classified (R00-R99)R00-R99

Excludes2 — not included here, but the patient may have both. Code both when documented.

Instructional notes 4

F16code

Includes

ecstasy
PCP
phencyclidine

F01-F99chapter

Includes

disorders of psychological development

Index entries leading here filed at null

No alphabetic index entry points at this code.

Subordinate codes 3

F16.1 Hallucinogen abuse F16.2 Hallucinogen dependence F16.9 Hallucinogen use, unspecified

Medications 4

MED-RT files conditions by MeSH, which carves the world differently from ICD-10. These are name matches on this code's description, offered as candidates — not as an assertion that they are this code.

Additional references

AHA Coding Clinic® Licence required

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

Risk adjustment

Maps to no condition category in any loaded model.

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

This code

Billable: no
Code set: FY2026
Block: F10-F19
Subordinate: 3

Present FY2024–FY2027.