F15.929
BillableOther stimulant use, unspecified with intoxication, unspecified
Last updated: FY2026 ICD-10-CM (Oct 1, 2025 – Sep 30, 2026) | CMS-HCC V28 (100% phase-in, PY2026)
Is F15.929 an HCC code?
Yes. F15.929 maps to Drug Use Disorder, Moderate/Severe, or Drug Use with Non-Psychotic Complications under the CMS-HCC V28 risk adjustment model (and Substance Use Disorder, Moderate/Severe, or Substance Use with Complications under V24).
HCC Category Mapping
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 F15.929
For F15.929to 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 F15.929 during that encounter — not just copy-forwarded from a problem list.
What This Code Means
F15.929 is the ICD-10-CM diagnosis code for other stimulant use, unspecified with intoxication, unspecified. A person using stimulant drugs who is currently intoxicated, but the specific type or severity of intoxication complications is not documented or specified. F15.929 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, F15.929 maps to Drug Use Disorder, Moderate/Severe, or Drug Use with Non-Psychotic Complications (HCC 137) with a community, non-dual, aged base RAF weight of 0.424. Under the older CMS-HCC V24 model, F15.929 maps to Substance Use Disorder, Moderate/Severe, or Substance Use with Complications (HCC 55) with a community, non-dual, aged base RAF weight of 0.329. 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 intoxication is present but the specific manifestations are not clearly documented. Because F15.929 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 F15.929 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 intoxication is present but the specific manifestations are not clearly documented
- •Encourage providers to document specific intoxication symptoms to allow for more precise coding
Clinical Significance
Stimulant use, unspecified with unspecified intoxication is the least specific intoxication code, indicating a patient is intoxicated from stimulants but neither the use pattern nor the intoxication characteristics are documented. This code should be used only as a last resort when clinical documentation is minimal, typically in acute care settings with limited history available.
Documentation Requirements
- ✓Documentation of stimulant use or positive toxicology
- ✓Evidence of current intoxication
- ✓Query to provider for specification of intoxication details and use pattern
- ✓Clinical signs suggestive of stimulant intoxication
- ✓Follow-up plan to obtain more complete substance use history
Commonly Confused Codes
- •F15.920 — Use when intoxication is confirmed as uncomplicated
- •F15.921 — Use when delirium is present
- •F15.922 — Use when perceptual disturbances are present
- •F15.220-F15.229 — Dependence with intoxication codes; use when dependence is documented
- •F15.120-F15.129 — Abuse with intoxication codes; use when abuse is documented