F11.23
BillableOpioid dependence with withdrawal
Last updated: FY2026 ICD-10-CM (Oct 1, 2025 – Sep 30, 2026) | CMS-HCC V28 (100% phase-in, PY2026)
Is F11.23 an HCC code?
Yes. F11.23 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
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 F11.23
For F11.23 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 F11.23 during that encounter — not just copy-forwarded from a problem list.
What This Code Means
F11.23 is the ICD-10-CM diagnosis code for opioid dependence with withdrawal. This code describes a patient who is dependent on opioids and is currently experiencing withdrawal symptoms, which occur when opioid use is reduced or stopped. Withdrawal can cause physical discomfort and psychological symptoms like anxiety, pain, and cravings. F11.23 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, F11.23 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, F11.23 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.
Ensure documentation clearly indicates both the opioid dependence AND the active withdrawal state; withdrawal alone without documented dependence would use a different code. Because F11.23 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 F11.23 sourced directly from the CMS-HCC risk adjustment model files and the CMS ICD-10-CM code set.
Coding Tips
- •Ensure documentation clearly indicates both the opioid dependence AND the active withdrawal state; withdrawal alone without documented dependence would use a different code
- •Specify the type of opioid if documented (heroin, prescription opioids, synthetic opioids) as this may affect treatment planning and should be reflected in more specific coding when available
Clinical Significance
Opioid dependence with withdrawal is a critical diagnosis indicating a physiologically dependent patient experiencing withdrawal symptoms upon cessation or reduction of opioid use. Opioid withdrawal causes intense physical and psychological distress and is a major driver of relapse and continued use. This code captures a high-acuity clinical state requiring active medical management.
Documentation Requirements
- ✓Provider documentation of opioid dependence
- ✓Documentation of active withdrawal symptoms (myalgia, lacrimation, rhinorrhea, diaphoresis, piloerection, nausea, vomiting, diarrhea, insomnia, anxiety, restlessness)
- ✓Clinical Opiate Withdrawal Scale (COWS) score if available
- ✓Temporal relationship between opioid cessation/reduction and symptom onset
- ✓Type of opioid if documented
- ✓Withdrawal management plan (medication-assisted treatment, supportive care)
- ✓Assessment for medication-assisted treatment candidacy
Excludes 1 — Do NOT code together
- opioid dependence with intoxication (F11.22-)