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Pricing Sign in

F16.221

Hallucinogen dependence with intoxication with delirium

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

Exclusions 3 never code together

Excludes1

hallucinogen abuse (F16.1-)F16.1-
hallucinogen use, unspecified (F16.9-)F16.9-

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

F16code

Includes

ecstasy
PCP
phencyclidine

F01-F99chapter

Includes

disorders of psychological development

Index entries leading here 3

Delirium, delirious (acute or subacute) (not alcohol- or drug-induced) R41.0
- due to (secondary to)
  - hallucinogen intoxication F16.921
    - in
      - dependence F16.221
  - phencyclidine intoxication (acute) F16.921
    - in
      - dependence F16.221
Dependence (on) (syndrome) F19.20
- drug NEC F19.20
  - hallucinogen F16.20
    - with
      - intoxication F16.229
        
        with delirium F16.221
Disorder (of) — see also Disease
- hallucinogen use
  - moderate or severe F16.20
    - with
      - hallucinogen intoxication delirium F16.221
- phencyclidine use
  - moderate or severe F16.20
    - with
      - phencyclidine intoxication delirium F16.221

Alongside this code 2 same parent — F16.22

F16.220 Hallucinogen dependence with intoxication, uncomplicated F16.229 Hallucinogen dependence with intoxication, unspecified

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

CMS22HCC55 CMS28HCC137 ESRD21HCC55 ESRD24HCC55

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

This code

Billable: yes
Code set: FY2026
Parent: F16.22
Block: F10-F19
Siblings: 2

Present FY2024–FY2027.