2026 ICD-10-CM Diagnosis Code F16.980Hallucinogen use, unspecified with hallucinogen-induced anxiety disorder

ICD-10-CM Codes›F01–F99›F10-F19›F16

ICD-10-CM F16.980
CMSSource: CMS FY 2026 ICD-10-CM dataset · Effective Oct 1, 2025 – Sep 30, 2026

F16.980 is a billable ICD-10-CM diagnosis code for hallucinogen use, unspecified with hallucinogen-induced anxiety disorder. It is valid on HIPAA claims for fiscal year 2026 (October 1, 2025 through September 30, 2026) and groups to MS-DRG 894 through 897. Coders also document this condition as anxiety disorder caused by phencyclidine. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Anxiety and fear-related disorders and Hallucinogen-related disorders.

Code Identity

ICD-10-CM Code
F16.980
Billable Status
Yes — Valid for Submission
Code Describes
Hallucinogen use, unspecified with hallucinogen-induced anxiety disorder
Short Description
Hallucinogen use, unsp w anxiety disorder
Parent Code
F16.98
Hallucinogen use, unspecified with other specified hallucinogen-induced disorder

Code Classification

ChapterF01–F99Mental and behavioural disorders
SectionF10-F19Mental and behavioral disorders due to psychoactive substance use
CategoryF16Hallucinogen related disorders
This CodeF16.980Hallucinogen use, unspecified with hallucinogen-induced anxiety disorder

Approximate SynonymsGuidance

Alternate terms and clinical phrases that map to this code.

  • Anxiety disorder caused by phencyclidine
  • Hallucinogen-induced anxiety disorder
  • Phencyclidine induced mental problem

Tabular List NotesGuidance

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

Inclusion Terms

  • Other hallucinogen-induced anxiety disorder, without use disorder
  • Phencyclidine induced anxiety disorder, without use disorder

Index to Diseases and InjuriesGuidance

Alphabetical index entries that point to this code.

External Cause of Injuries IndexGuidance

References for this code in the External Cause of Injuries Index.

    • Disorder(of)
      • anxiety
        • due to (secondary to)
          • hallucinogen
    • Disorder(of)
      • anxiety
        • due to (secondary to)
          • phencyclidine
    • Phencyclidine-induced
      • anxiety disorder
    • Use(of)
      • hallucinogen NEC
        • with
          • anxiety disorder

Clinical ClassificationClinical

AHRQ’s CCSR groups this code into broader clinical categories.

CCSR MBD005
Anxiety and fear-related disorders
Default principal diagnosis: inpatient No · outpatient No
CCSR MBD022
Hallucinogen-related disorders
Default principal diagnosis: inpatient Yes · outpatient Yes

Patient EducationClinical

Anxiety

Anxiety is a feeling of fear, dread, and uneasiness. It might cause you to sweat, feel restless and tense, and have a rapid heartbeat. It can be a normal reaction to stress. For example, you might feel anxious when faced with a difficult problem at work, before taking a test, or before making an important decision.

The full article covers:

  • What is anxiety?
  • What are anxiety disorders?
  • What are the types of anxiety disorders?
  • What causes anxiety disorders?
  • Who is at risk for anxiety disorders?
  • What are the symptoms of anxiety disorders?
  • How are anxiety disorders diagnosed?
  • What are the treatments for anxiety disorders?

Read the full article at MedlinePlus

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

Convert F16.980 to ICD-9-CMHistory

The closest ICD-9-CM equivalents under the General Equivalence Mappings.

ICD-9-CM
292.89 Drug mental disorder NEC
Approximate The match is approximate rather than exact.

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 F16.980Overview

Is F16.980 a billable code?

Yes. This is a billable ICD-10-CM code, specific enough to report hallucinogen use, unspecified with hallucinogen-induced anxiety disorder on HIPAA-covered claims from October 1, 2025 through September 30, 2026.

What MS-DRG does F16.980 group to?

When hallucinogen use, unspecified with hallucinogen-induced anxiety disorder is the principal diagnosis on an inpatient stay, it groups to MS-DRG 894, 895, 896, 897, with relative weights from 0.6169 to 1.7451 depending on complications. Higher weights mean higher Medicare reimbursement.

What is the ICD-9 equivalent of F16.980?

Under the General Equivalence Mappings, hallucinogen use, unspecified with hallucinogen-induced anxiety disorder converts to ICD-9-CM 292.89 (drug mental disorder NEC). The mapping is approximate, so confirm the match fits the documentation.

Footnotes

[1] Not chronic - A diagnosis code that does not fit the criteria for chronic condition (duration, ongoing medical treatment, and limitations) is considered not chronic. Some codes designated as not chronic are acute conditions. Other diagnosis codes that indicate a possible chronic condition, but for which the duration of the illness is not specified in the code description (i.e., we do not know the condition has lasted 12 months or longer) also are considered not chronic.