F16.121 – Hallucinogen abuse with intoxication with delirium
ICD-10-CM 2027 diagnosis code · Mental and behavioral disorders due to psychoactive substance use
- Code
F16.121(claims format:F16121)- Description
- Hallucinogen abuse with intoxication with delirium
- Billable
- Yes – valid for HIPAA-covered transactions
- Valid for
- Dates of service October 1, 2026 – September 30, 2027 (FY2027)
- Chapter
- 5. Mental, Behavioral and Neurodevelopmental disorders (F01-F99)
- Block
- F10-F19 Mental and behavioral disorders due to psychoactive substance use
- Parent codes
- F16 › F16.1 › F16.12
Notes inherited from parent codes
Instructional notes at a category or block level apply to every code below it.
F16 – Hallucinogen related disorders
- ecstasy
- PCP
- phencyclidine
F16.1 – Hallucinogen abuse
Index terms for F16.121
Entries in the ICD-10-CM alphabetic index that lead to this code:
- Abuse, drug NEC, hallucinogen, with, intoxication, with, delirium
- Delirium, delirious, due to, hallucinogen intoxication, in, abuse
- Delirium, delirious, due to, phencyclidine intoxication, in, abuse
- Disorder, hallucinogen use, mild, with, hallucinogen intoxication delirium
- Disorder, phencyclidine use, mild, with, phencyclidine intoxication delirium
Related codes in F16.12
Frequently asked questions
What is ICD-10 code F16.121?
F16.121 is the ICD-10-CM code for hallucinogen abuse with intoxication with delirium, in the block F10-F19 (Mental and behavioral disorders due to psychoactive substance use).
Is F16.121 a billable code?
Yes. F16.121 is a billable/specific code that can be used to indicate a diagnosis for reimbursement purposes.
What category does F16.121 belong to?
It belongs to category F16 – Hallucinogen related disorders.
Source: CDC/NCHS ICD-10-CM FY2027 code files, tabular list and index. Reference only – code assignment must follow the official ICD-10-CM guidelines and documentation in the medical record.