What is this code?
ICD-10 entries help standardize how diagnoses are organized for coding, reporting, analytics, and documentation. This code sits within the broader ICD-10 area for Mental, Behavioral and Neurodevelopmental disorders (F01-F99).
When is it used?
- May be used when a clinician documents hallucinogen abuse in a patient's medical record.
- May appear in hospital records, claims, referrals, and clinical documentation.
- This code may act more like a grouping or parent code, so a more specific child code may be used in final documentation when available.
What it does not mean
- A code alone does not explain severity, treatment plan, or outcome.
- A medical code should not be treated as a substitute for a doctor's diagnosis or advice.
- This entry may represent a broader category rather than the most specific billable code.
Code hierarchy
chapter
5Mental, Behavioral and Neurodevelopmental disorders (F01-F99)
block
F10-F19Mental and behavioral disorders due to psychoactive substance use
category
F16Hallucinogen related disorders
currentF16
Official coding notes
Excludes1 (do not code together)
- hallucinogen dependence (F16.2-)
- hallucinogen use, unspecified (F16.9-)
Where you may see this code
You may see this entry in coding references, medical records, or claims workflows when a broader diagnosis category is being reviewed before a more specific code is chosen.
Related codes
Mapped diagnoses and classifications
SNOMED_CT 191899001high
Continuous nondependent harmful pattern of use of hallucinogen
Source: SNOMED International ICD-10 map
SNOMED_CT 1336061004high
Episode of harmful use of hallucinogen
Source: SNOMED International ICD-10 map
SNOMED_CT 1336064007high
Episode of harmful use of ketamine
Source: SNOMED International ICD-10 map
SNOMED_CT 191900006high
Episodic nondependent harmful pattern of use of hallucinogen
Source: SNOMED International ICD-10 map
SNOMED_CT 74851005high
Harmful pattern of use of hallucinogen
Source: SNOMED International ICD-10 map
SNOMED_CT 1344922008high
Harmful pattern of use of ketamine
Source: SNOMED International ICD-10 map
Coding guidelines
Compatibility
Legacy code aligns to an official FY 2026 category. Frontend should resolve to the official category page and surface the billable child codes.
Legacy codes
F16.1
Replacement codes
F16.10 — Hallucinogen abuse, uncomplicatedF16.11 — Hallucinogen abuse, in remissionF16.14 — Hallucinogen abuse with hallucinogen-induced mood disorderF16.19 — Hallucinogen abuse with unspecified hallucinogen-induced disorder
Common synonyms
Hallucinogen abuse
Frequently asked questions
About this content
This page is prepared by HealthAssure's clinical team using official coding standards from ICD-10. AI tools assist with drafting explanations, which are then reviewed and verified by healthcare professionals for accuracy. This content is for informational purposes and does not replace professional medical advice. Meet our team.