F13.26
BillableSedative, hypnotic or anxiolytic dependence with sedative, hypnotic or anxiolytic-induced persisting amnestic disorder
Last updated: FY2026 ICD-10-CM (Oct 1, 2025 – Sep 30, 2026) | CMS-HCC V28 (100% phase-in, PY2026)
Is F13.26 an HCC code?
Yes. F13.26 maps to Drug/Alcohol Psychosis under the CMS-HCC V28 risk adjustment model (and Drug/Alcohol Psychosis 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 F13.26
For F13.26 to 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 F13.26 during that encounter — not just copy-forwarded from a problem list.
What This Code Means
F13.26 is the ICD-10-CM diagnosis code for sedative, hypnotic or anxiolytic dependence with sedative, hypnotic or anxiolytic-induced persisting amnestic disorder. A person is dependent on sedatives, sleeping pills, or anti-anxiety medications and has developed long-term memory loss caused by these drugs. F13.26 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, F13.26 maps to Drug/Alcohol Psychosis (HCC 135) with a community, non-dual, aged base RAF weight of 0.000. Under the older V24 model, F13.26 mapped to the same category but with a base RAF weight of 0.434 — V28 recalibrated weights across the entire model. 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.
This code indicates a persisting amnestic disorder that continues even after substance use may have stopped. Because F13.26 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 F13.26 sourced directly from the CMS-HCC risk adjustment model files and the CMS ICD-10-CM code set.
Coding Tips
- •This code indicates a persisting amnestic disorder that continues even after substance use may have stopped
- •Document the extent of memory impairment and whether it affects short-term, long-term, or both types of memory
Clinical Significance
Sedative-induced persisting amnestic disorder represents permanent or long-lasting memory impairment caused by chronic sedative dependence, even after the substance use may have stopped. This is a devastating cognitive complication that significantly impacts functional status and quality of life. The 'persisting' qualifier distinguishes this from transient memory effects during intoxication and indicates lasting brain damage from the substance.
Documentation Requirements
- ✓Documentation of sedative, hypnotic, or anxiolytic dependence
- ✓Neuropsychological testing or cognitive assessment documenting memory impairment
- ✓Evidence the amnestic disorder persists beyond the acute intoxication or withdrawal period
- ✓Type of memory affected (anterograde, retrograde, short-term, long-term)
- ✓Clinical evidence linking the memory impairment to the substance use
- ✓Functional assessment documenting impact on daily living activities