2027 ICD-10-CM Diagnosis Code F19.91Other psychoactive substance use, unspecified, in remission

ICD-10-CM Codes›F01–F99›F10-F19›F19

ICD-10-CM F19.91
CMSSource: CMS FY 2027 ICD-10-CM dataset · Effective Oct 1, 2026 – Sep 30, 2027

F19.91 is a billable ICD-10-CM diagnosis code for other psychoactive substance 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. Coders also document this condition as history of substance use disorder. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Mental and substance use disorders in remission.

Code Identity

ICD-10-CM Code
F19.91
Billable Status
Yes — Valid for Submission
Code Describes
Other psychoactive substance use, unspecified, in remission
Short Description
Other psychoactive substance use, unspecified, in remission
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 CodeF19.91Other psychoactive substance use, unspecified, in remission

Approximate SynonymsGuidance

Alternate terms and clinical phrases that map to this code.

  • History of substance use disorder
  • Nondependent harmful pattern of substance use in remission

Instructional NotesGuidance

Instructions from the official ICD-10-CM Tabular List that apply to F19.91: its own notes plus those printed at F19.9, F19, 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 F19 Other psychoactive substance related disorders applies to 63 codes
  • polysubstance drug use (indiscriminate drug use)
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 F19.9 Other psychoactive substance use, unspecified applies to 21 codes
  • other psychoactive substance abuse (F19.1-)
  • other psychoactive substance dependence (F19.2-)

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 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 F19.91, its category, or a range that includes it.

Excludes1 2

These codes carry an Excludes1 note naming F19.91: they are not reported together with it, unless the two conditions are unrelated.

  • F19.1 Other psychoactive substance abuse
    other psychoactive substance use, unspecified (F19.9-) names F19.9-, which includes this code
  • F19.2 Other psychoactive substance dependence
    other psychoactive substance use, unspecified (F19.9-) names F19.9-, which includes this code

Excludes2 2

These codes carry an Excludes2 note naming F19.91: its condition is not part of those codes, and both may be reported when the patient has both.

  • F44.0 Dissociative amnesia
    alcohol-or other psychoactive substance-induced amnestic disorder (F10, F13, F19 with .26, .96) names F19, which includes this code
  • T40 Poisoning by, adverse effect of and underdosing of narcotics and psychodysleptics [hallucinogens]
    drug dependence and related mental and behavioral disorders due to psychoactive substance use (F10.-F19.-) names F19.-, 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 F19.91 replaces the following previously assigned code(s):

  • F19.90 - Other psychoactive substance 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 F19.91Overview

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

The ICD-10-CM code for other psychoactive substance use, unspecified, in remission is F19.91 (sometimes written as F1991). It is billable on HIPAA-covered claims from October 1, 2026 through September 30, 2027.

Is F19.91 (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, in remission on HIPAA-covered claims from October 1, 2026 through September 30, 2027.

What MS-DRG does F19.91 group to?

When other psychoactive substance 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 F19.91 be reported with a code from F19.1?

Not as a rule. The Excludes1 note at F19.9, which applies to F19.91, lists "other psychoactive substance abuse (F19.1-)". 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).