2026 ICD-10-CM Diagnosis Code F16Hallucinogen related disorders

ICD-10-CM Codes›F01–F99›F10-F19›F16

ICD-10-CM F16
CMSSource: CMS FY 2026 ICD-10-CM dataset · Effective Oct 1, 2025 – Sep 30, 2026

F16 is a non-billable ICD-10-CM category code for hallucinogen related disorders, so it cannot be submitted on claims. Use a more specific code from this category instead, such as F16.10, F16.11, F16.120, and F16.121.

Code Identity

ICD-10-CM Code
F16
Billable Status
No — Non-Billable Category
Code Describes
Hallucinogen related disorders
Chapter
F10-F19
Mental and behavioral disorders due to psychoactive substance use

Code Classification

ChapterF01–F99Mental and behavioural disorders
SectionF10-F19Mental and behavioral disorders due to psychoactive substance use
CategoryF16Hallucinogen related disorders
This CodeF16Hallucinogen related disorders

Specific Coding for Hallucinogen related disordersOverview

Non-specific codes like F16 require more characters. Use one of these billable codes instead:

  • F16.1 for Hallucinogen abuse

  • Use F16.10 for Hallucinogen abuse, uncomplicated

  • Use F16.11 for Hallucinogen abuse, in remission

  • F16.12 for Hallucinogen abuse with intoxication

  • Use F16.14 for Hallucinogen abuse with hallucinogen-induced mood disorder

  • F16.15 for Hallucinogen abuse with hallucinogen-induced psychotic disorder

  • F16.18 for Hallucinogen abuse with other hallucinogen-induced disorder

  • Use F16.19 for Hallucinogen abuse with unspecified hallucinogen-induced disorder

  • F16.2 for Hallucinogen dependence

  • Use F16.20 for Hallucinogen dependence, uncomplicated

  • Use F16.21 for Hallucinogen dependence, in remission

  • F16.22 for Hallucinogen dependence with intoxication

  • Use F16.24 for Hallucinogen dependence with hallucinogen-induced mood disorder

  • F16.25 for Hallucinogen dependence with hallucinogen-induced psychotic disorder

  • F16.28 for Hallucinogen dependence with other hallucinogen-induced disorder

  • Use F16.29 for Hallucinogen dependence with unspecified hallucinogen-induced disorder

  • F16.9 for Hallucinogen use, unspecified

  • Use F16.90 for Hallucinogen use, unspecified, uncomplicated

  • Use F16.91 for Hallucinogen use, unspecified, in remission

  • F16.92 for Hallucinogen use, unspecified with intoxication

  • Use F16.94 for Hallucinogen use, unspecified with hallucinogen-induced mood disorder

  • F16.95 for Hallucinogen use, unspecified with hallucinogen-induced psychotic disorder

  • F16.98 for Hallucinogen use, unspecified with other specified hallucinogen-induced disorder

  • Use F16.99 for Hallucinogen use, unspecified with unspecified hallucinogen-induced disorder

Tabular List NotesGuidance

Coding notes and annotation back-references applicable to this code.

Includes

  • ecstasy
  • PCP
  • phencyclidine

Patient EducationClinical

Drug Use and Addiction

Drugs are chemical substances that can change how your body and mind work. They include prescription medicines, over-the-counter medicines, alcohol, tobacco, and illegal drugs.

The full article covers:

  • What are drugs?
  • What is drug use?
  • What is drug addiction?
  • Does everyone who takes drugs become addicted?
  • Who is at risk for drug addiction?
  • What are the signs that someone has a drug problem?
  • What are the treatments for drug addiction?
  • Can drug use and addiction be prevented?

Read the full article at MedlinePlus

Courtesy of MedlinePlus, a service of the U.S. National Library of Medicine.

Code HistoryHistory

FY 2016AddedAdded to the ICD-10-CM code setEffective October 1, 2015, the first year of ICD-10-CM.
FY 2017–2025No changes
FY 2026CurrentCurrent code set, no changesEffective October 1, 2025 through September 30, 2026.

Questions About F16Overview

Is F16 (Hallucinogen related disorders) a billable code?

No. This is a category header that groups the codes for hallucinogen related disorders, and headers cannot be submitted on claims. Claims for hallucinogen related disorders need a more specific code from this category, such as F16.10, F16.11, and F16.120.