What is ICD-10 code F15.19?

F15.19 is the ICD-10-CM diagnosis code for Other stimulant abuse with unspecified stimulant-induced disorder. Other mental health or behavioral problems caused by stimulant drug abuse that don't fit into more specific categories. It belongs to the ICD-10-CM chapter for mental, behavioral and neurodevelopmental disorders (f01-f99). F15.19 is a billable code, meaning it can be reported on a claim as a primary or secondary diagnosis when supported by documentation. F15.19 is part of the FY2026 ICD-10-CM code set published by the CMS National Center for Health Statistics and used on Medicare, Medicaid, and commercial claims in the United States.

Yes. F15.19 is a billable ICD-10-CM code that can be reported on professional and institutional claims as a primary or secondary diagnosis when the provider documentation supports the specific condition described. Billable codes in ICD-10-CM are coded to the highest level of specificity available for the documented diagnosis. F15.19 is current for fiscal year 2026 and remains in the active CMS ICD-10-CM code set published by the National Center for Health Statistics.

What is the V28 vs V24 difference for F15.19?

CMS phased in the V28 risk adjustment model over payment years 2024 (33%), 2025 (67%), and 2026 (100%), replacing V24. V28 consolidates HCC categories, removes some lower-acuity conditions, and recalibrates RAF weights across the entire model. For F15.19, V28 maps to Drug Use Disorder/Substance Use Disorder, Moderate/Severe at RAF 0.358 while V24 mapped to Drug/Alcohol Dependence at RAF 0.334. Both models can still appear in legacy data and in payer-specific lookback periods.

What should coders know when reporting F15.19?

Use this code only when the stimulant-induced disorder doesn't match other F15.1x codes Document the specific disorder or symptom in the medical record for clarity Because F15.19 maps to a payment HCC, the documentation must also satisfy MEAT criteria (Monitor, Evaluate, Assess, or Treat) for the encounter to count toward the patient's risk adjustment score.

F15.19: Other stimulant abuse with unspecified

ICD-10-CM Code View

HCC Buddy Code Card

Digital ICD-10 code-book layout with official code detail, always-visible risk models, Code Trumping, and Buddy coding guidance.

Code lookupF15.19Effective periodFY2026 Apr Update (Apr 1-Sep 30)

FY 2026 Apr update / Mental, Behavioral and Neurodevelopmental disorders (F01-F99) / Mental and behavioral disorders due to psychoactive substance use (F10-F19)

F15.19

Billable / SpecificICD-10-CMOfficial ICD-10-CMCodebook guidance

Other stimulant abuse with unspecified stimulant-induced disorder

Other mental health or behavioral problems caused by stimulant drug abuse that don't fit into more specific categories.

Buddy Insight

This code represents stimulant abuse with an unspecified induced disorder, serving as a fallback when a stimulant-related complication is present but not further categorized.

CMS-HCC V28

Mapped

HCC 137

Drug Use Disorder/Substance U...

RAF 0.358

CMS-HCC V24

Mapped

HCC 55

Drug/Alcohol Dependence

RAF 0.334

ACA/HHS

Not risk-adjusted for this model/period.

RAF 0

ESRD/PACE

Mapped

HCC 55

Drug/Alcohol Dependence

RAF 0.0

RXHCC

Not risk-adjusted for this model/period.

RAF 0

Code Trumping

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Compare selected patient codes to show trumped or trumps impact.

Code Book Path

Official

F15Other stimulant related disorders

F15.1Other stimulant abuse

F15.19Other stimulant abuse with unspecified stimulant-induced disorder

Inclusion Terms

Official

ICD-10-CM does not list inclusion terms for F15.19 in this effective period.

Excludes 2

Official

ICD-10-CM does not list Excludes 2 notes for F15.19 in this effective period.

Related Child Codes

Official

F15.10Other stimulant abuse, uncomplicated

F15.11Other stimulant abuse, in remission

F15.12Other stimulant abuse with intoxication

F15.13Other stimulant abuse with withdrawal

F15.14Other stimulant abuse with stimulant-induced mood disorder

Includes

Official

ICD-10-CM does not list Includes notes for F15.19 in this effective period.

Excludes 1

Official

other stimulant dependence (F15.2-)
other stimulant use, unspecified (F15.9-)

Code First

Official

ICD-10-CM does not list Code First sequencing instructions for F15.19 in this effective period.

Use Additional

Official

ICD-10-CM does not list Use Additional Code instructions for F15.19 in this effective period.

Code Also

Official

ICD-10-CM does not list Code Also instructions for F15.19 in this effective period.

Buddy Documentation Tip

HCC Buddy guidance

Documented stimulant abuse pattern

Evidence that a stimulant-induced disorder exists, even if not fully specified

Query to provider to identify the specific induced disorder when possible

Documentation supporting the causal relationship between stimulant use and the disorder

MEAT Support

HCC Buddy guidance

Documented stimulant abuse pattern

Evidence that a stimulant-induced disorder exists, even if not fully specified

Query to provider to identify the specific induced disorder when possible

Documentation supporting the causal relationship between stimulant use and the disorder

Audit Caution

HCC Buddy guidance

Using this code when a more specific induced disorder code is available in the documentation

Confusing with F15.10 (uncomplicated abuse) — F15.19 requires presence of an induced disorder

Failing to query the provider for specification of the induced disorder

Accepting vague documentation without attempting to clarify the clinical picture

Common Mistakes

HCC Buddy guidance

F15.10 — Stimulant abuse, uncomplicated; use when there is NO induced disorder present

F15.188 — Stimulant abuse with other induced disorder; use when the disorder is identified but doesn't fit specific categories

F15.29 — Stimulant dependence with unspecified induced disorder; requires documented dependence

F15.99 — Stimulant use, unspecified with unspecified induced disorder; double unspecified, least preferred

Last updated: FY2026 ICD-10-CM Apr update, Apr 1, 2026 through Sep 30, 2026. CMS-HCC V28 is 100% phased in for payment year 2026.

Is F15.19 an HCC code?

Yes. F15.19 maps to Drug Use Disorder/Substance Use Disorder, Moderate/Severe under the CMS-HCC V28 risk adjustment model (and Drug/Alcohol Dependence under V24).

HCC Category Mapping

V28HCC 137, Drug Use Disorder/Substance Use Disorder, Moderate/Severe

0.358

V24HCC 55, Drug/Alcohol Dependence

0.334

ESRDHCC 55, Drug/Alcohol Dependence

0.000

RAF weights shown are the community, non-dual, aged base weights from the CMS risk adjustment model file. Actual per-patient RAF contribution depends on member segment, interactions, and the model year used by the payer. V28 is the CMS-HCC model phased in over payment years 2024–2026; V24 remains in use during the transition and for historical data.

MEAT Criteria for F15.19

For F15.19to count as a valid HCC diagnosis in a given encounter, the provider's documentation must show MEAT: Monitor, Evaluate, Assess, or Treat. A diagnosis from a prior year does not carry forward automatically, it has to be re-documented and supported each calendar year.

MMonitor: signs, symptoms, disease progression, or lab trending documented in the note
EEvaluate: test results, medication response, or physical findings reviewed by the provider
AAssess: explicit mention in the assessment or plan with acknowledgment of status
TTreat: medication, referral, procedure, therapy, or counseling tied to the diagnosis

Only one of M/E/A/T is required to support the code, but the documentation must be specific enough to show that the provider actually addressed F15.19 during that encounter, not just copy-forwarded from a problem list.

What This Code Means

F15.19 is the ICD-10-CM diagnosis code for other stimulant abuse with unspecified stimulant-induced disorder. Other mental health or behavioral problems caused by stimulant drug abuse that don't fit into more specific categories. F15.19 sits in the ICD-10-CM chapter for mental, behavioral and neurodevelopmental disorders (f01-f99), within the section covering mental and behavioral disorders due to psychoactive substance use (f10-f19).

Under the CMS-HCC V28 risk adjustment model, F15.19 maps to Drug Use Disorder/Substance Use Disorder, Moderate/Severe (HCC 137) with a community, non-dual, aged base RAF weight of 0.358. Under the older CMS-HCC V24 model, F15.19 maps to Drug/Alcohol Dependence (HCC 55) with a community, non-dual, aged base RAF weight of 0.334. V28 is the CMS-HCC risk adjustment model that reached 100% phase-in for payment year 2026, replacing V24 which was used during the PY2024–PY2025 transition.

Use this code only when the stimulant-induced disorder doesn't match other F15.1x codes. Because F15.19 maps to a payment HCC, the provider's documentation must satisfy MEAT criteria (Monitor, Evaluate, Assess, or Treat) for the encounter to count toward the patient's Medicare Advantage risk adjustment score. When documentation is ambiguous, coders should issue a provider query rather than assume the highest-specificity variant.

HCC Buddy maintains structured V28 and V24 mapping, RAF weights, and MEAT documentation criteria for F15.19 sourced directly from the CMS-HCC risk adjustment model files and the CMS ICD-10-CM code set.

Coding Tips

•Use this code only when the stimulant-induced disorder doesn't match other F15.1x codes
•Document the specific disorder or symptom in the medical record for clarity

Clinical Significance

This code represents stimulant abuse with an unspecified induced disorder, serving as a fallback when a stimulant-related complication is present but not further categorized. While it still captures risk adjustment value, it represents a documentation deficiency that should trigger a provider query for specificity. Complete documentation improves both clinical care and coding accuracy.

Documentation Requirements

✓Documented stimulant abuse pattern
✓Evidence that a stimulant-induced disorder exists, even if not fully specified
✓Query to provider to identify the specific induced disorder when possible
✓Documentation supporting the causal relationship between stimulant use and the disorder
✓Treatment plan addressing the substance abuse and associated complications

Commonly Confused Codes

•F15.10: Stimulant abuse, uncomplicated; use when there is NO induced disorder present
•F15.188: Stimulant abuse with other induced disorder; use when the disorder is identified but doesn't fit specific categories
•F15.29: Stimulant dependence with unspecified induced disorder; requires documented dependence
•F15.99: Stimulant use, unspecified with unspecified induced disorder; double unspecified, least preferred