2026 ICD-10-CM Diagnosis Code F19.90Other psychoactive substance use, unspecified, uncomplicated

ICD-10-CM Codes›F01–F99›F10-F19›F19

ICD-10-CM F19.90
CMSSource: CMS FY 2026 ICD-10-CM dataset · Effective Oct 1, 2025 – Sep 30, 2026

F19.90 is a billable ICD-10-CM diagnosis code for other psychoactive substance use, unspecified, uncomplicated. 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. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Other specified substance-related disorders.

Code Identity

ICD-10-CM Code
F19.90
Billable Status
Yes — Valid for Submission
Code Describes
Other psychoactive substance use, unspecified, uncomplicated
Short Description
Other psychoactive substance use, unspecified, uncomplicated
Same as the full description in the CMS dataset.
Parent Code
F19.9
Other psychoactive substance use, unspecified

Code Classification

ChapterF01–F99Mental and behavioural disorders
SectionF10-F19Mental and behavioral disorders due to psychoactive substance use
CategoryF19Other psychoactive substance related disorders
This CodeF19.90Other psychoactive substance use, unspecified, uncomplicated

Approximate SynonymsGuidance

Alternate terms and clinical phrases that map to this code.

  • Continuous nondependent harmful pattern of substance use
  • Continuous nondependent harmful pattern of use of antidepressant
  • Current drug user
  • Deep vein thrombosis of lower extremity due to intravenous drug use
  • Difficulty performing normal routines due to substance use
  • Drug misuse before confirmation of pregnancy
  • Drug-related offending behavior
  • Episodic harmful pattern of substance use
  • Episodic nondependent harmful pattern of substance use
  • Episodic nondependent harmful pattern of use of antidepressant
  • Harmful pattern of use of antidepressant
  • Harmful pattern of use of novel psychoactive substance
  • Illicit drug injection in last 12 months
  • Illicit medication use
  • Injecting drug user
  • Misuse of non-prescription drug
  • Nitrous oxide user
  • Patient denies drug use
  • Prenatal finding
  • Psychoactive substance use disorder
  • Shares drug equipment
  • Shares drug injecting equipment
  • Substance misuse clinical management plan agreed
  • Substance misuse monitoring status
  • Substance use disorder
  • Treated for drug use in last 12 months
  • Under care of drug misuse service
  • Under care of service

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.

    • Use(of)
      • drug (s) NEC
    • Use(of)
      • nonprescribed drugs
    • Use(of)
      • patent medicines
    • Use(of)
      • psychoactive drug NEC

Clinical ClassificationClinical

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

CCSR MBD025
Other specified substance-related disorders
Default principal diagnosis: inpatient Yes · outpatient Yes

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.

Convert F19.90 to ICD-9-CMHistory

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

ICD-9-CM
305.80 Antidepress abuse-unspec
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 F19.90Overview

Is F19.90 (Other psychoactive substance use, unspecified) a billable code?

Yes. This is a billable ICD-10-CM code, specific enough to report other psychoactive substance use, unspecified, uncomplicated on HIPAA-covered claims from October 1, 2025 through September 30, 2026.

What MS-DRG does F19.90 group to?

When other psychoactive substance use, unspecified, uncomplicated 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 F19.90?

Under the General Equivalence Mappings, other psychoactive substance use, unspecified, uncomplicated converts to ICD-9-CM 305.80 (antidepress abuse-unspec). 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.