2027 ICD-10-CM Diagnosis Code F15.91Other stimulant use, unspecified, in remission

ICD-10-CM Codes›F01–F99›F10-F19›F15

ICD-10-CM F15.91
CMSSource: CMS FY 2027 ICD-10-CM dataset · Effective Oct 1, 2026 – Sep 30, 2027

F15.91 is a billable ICD-10-CM diagnosis code for other stimulant use, unspecified, in remission. It is valid on HIPAA claims for fiscal year 2027 (October 1, 2026 through September 30, 2027) and groups to MS-DRG 894 through 897. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Mental and substance use disorders in remission.

Code Identity

ICD-10-CM Code
F15.91
Billable Status
Yes — Valid for Submission
Code Describes
Other stimulant use, unspecified, in remission
Short Description
Other stimulant use, unspecified, in remission
Same as the full description in the CMS dataset.
Parent Code
F15.9
Other stimulant use, unspecified

Code Classification

ChapterF01–F99Mental and behavioural disorders
SectionF10-F19Mental and behavioral disorders due to psychoactive substance use
CategoryF15Other stimulant related disorders
This CodeF15.91Other stimulant use, unspecified, in remission

Instructional NotesGuidance

Instructions from the official ICD-10-CM Tabular List that apply to F15.91: its own notes plus those printed at F15.9, F15, and Chapter 5. A note printed at a category, block or chapter applies to every code under it.

Includes

Further defines, or gives examples of, the content of the category.

From F15 Other stimulant related disorders applies to 48 codes
  • amphetamine-related disorders
  • caffeine
From Chapter 5 (F01-F99) Mental and behavioural disorders applies to 872 codes
  • disorders of psychological development

Excludes1

Not coded here: the excluded code is never reported together with this one, unless the two conditions are unrelated.

From F15.9 Other stimulant use, unspecified applies to 16 codes
  • other stimulant abuse (F15.1-)
  • other stimulant dependence (F15.2-)

Excludes2

Not included here: the excluded condition is not part of this code, but a patient may have both, so both codes may be reported.

From F15 Other stimulant related disorders applies to 48 codes
  • cocaine-related disorders (F14.-)
From Chapter 5 (F01-F99) Mental and behavioural disorders applies to 872 codes
  • symptoms, signs and abnormal clinical laboratory findings, not elsewhere classified (R00-R99)

Source: CMS ICD-10-CM Tabular List. How to read instructional notes.

Referenced in Other NotesGuidance

Instructional notes printed at other codes that name F15.91, its category, or a range that includes it.

Excludes1 2

These codes carry an Excludes1 note naming F15.91: they are not reported together with it, unless the two conditions are unrelated.

  • F15.1 Other stimulant abuse
    other stimulant use, unspecified (F15.9-) names F15.9-, which includes this code
  • F15.2 Other stimulant dependence
    other stimulant use, unspecified (F15.9-) names F15.9-, which includes this code

Excludes2 1

These codes carry an Excludes2 note naming F15.91: its condition is not part of those codes, and both may be reported when the patient has both.

  • F14 Cocaine related disorders
    other stimulant-related disorders (F15.-) names F15.-, which includes this code

Index to Diseases and InjuriesGuidance

Alphabetical index entries that point to this code.

Clinical ClassificationClinical

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

CCSR MBD026
Mental and substance use disorders in remission
Default principal diagnosis: inpatient Yes · outpatient Yes

Code History & ChangesHistory

Replacement F15.91 replaces the following previously assigned code(s):

  • F15.90 - Other stimulant use, unspecified, uncomplicated
FY 2023AddedAdded to the ICD-10-CM code setEffective October 1, 2022.
FY 2024–2026No changes
FY 2027CurrentCurrent code set, no changesEffective October 1, 2026 through September 30, 2027.

Questions About F15.91Overview

What is the ICD-10 code for other stimulant use, unspecified, in remission?

The ICD-10-CM code for other stimulant use, unspecified, in remission is F15.91 (sometimes written as F1591). It is billable on HIPAA-covered claims from October 1, 2026 through September 30, 2027.

Is F15.91 (Other stimulant use, unspecified) a billable code?

Yes. This is a billable ICD-10-CM code, specific enough to report other stimulant use, unspecified, in remission on HIPAA-covered claims from October 1, 2026 through September 30, 2027.

What MS-DRG does F15.91 group to?

When other stimulant use, unspecified, in remission is the principal diagnosis on an inpatient stay, it groups to MS-DRG 894, 897, 895, 896, with relative weights from 0.6272 to 1.6610 depending on complications. Higher weights mean higher Medicare reimbursement.

Can F15.91 be reported with a code from F15.1?

Not as a rule. The Excludes1 note at F15.9, which applies to F15.91, lists "other stimulant abuse (F15.1-)". An Excludes1 note means the excluded code is never reported together with this one; the only exception is when the two conditions are unrelated to each other (Official Guidelines, Section I.A.12.a).