2026 ICD-10-CM Diagnosis Code F12.99Cannabis use, unspecified with unspecified cannabis-induced disorder

ICD-10-CM Codes›F01–F99›F10-F19›F12

ICD-10-CM F12.99
CMSSource: CMS FY 2026 ICD-10-CM dataset · Effective Oct 1, 2025 – Sep 30, 2026

F12.99 is a billable ICD-10-CM diagnosis code for cannabis use, unspecified with unspecified cannabis-induced 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 disorder caused by cannabis. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Cannabis-related disorders.

Code Identity

ICD-10-CM Code
F12.99
Billable Status
Yes — Valid for Submission
Code Describes
Cannabis use, unspecified with unspecified cannabis-induced disorder
Short Description
Cannabis use, unsp with unsp cannabis-induced disorder
Parent Code
F12.9
Cannabis use, unspecified

Code Classification

ChapterF01–F99Mental and behavioural disorders
SectionF10-F19Mental and behavioral disorders due to psychoactive substance use
CategoryF12Cannabis related disorders
This CodeF12.99Cannabis use, unspecified with unspecified cannabis-induced disorder

Approximate SynonymsGuidance

Alternate terms and clinical phrases that map to this code.

  • Disorder caused by cannabis
  • Disorder caused by synthetic cannabinoid use

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)
      • cannabis
        • with
          • unspecified disorder

Clinical ClassificationClinical

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

CCSR MBD019
Cannabis-related disorders
Default principal diagnosis: inpatient Yes · outpatient Yes

Patient EducationClinical

Marijuana

Marijuana is a green, brown, or gray mix of dried, crumbled parts from the marijuana plant. The plant contains chemicals which act on your brain and can change your mood or consciousness.

The full article covers:

  • What is marijuana?
  • How do people use marijuana?
  • What are the effects of marijuana?
  • Can you overdose on marijuana?
  • Is marijuana addictive?
  • What is medical marijuana?

Read the full article at MedlinePlus

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

Convert F12.99 to ICD-9-CMHistory

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

ICD-9-CM
292.9 Drug mental disorder NOS
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 F12.99Overview

Is F12.99 (Cannabis use, unspecified) a billable code?

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

What MS-DRG does F12.99 group to?

When cannabis use, unspecified with unspecified cannabis-induced 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 F12.99?

Under the General Equivalence Mappings, cannabis use, unspecified with unspecified cannabis-induced disorder converts to ICD-9-CM 292.9 (drug mental disorder NOS). 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.