Understanding the Changes in the CMS-HCC Model V28

Why This Topic Matters

The V28 transition changes how diagnoses contribute to risk adjustment, which can affect reimbursement, data quality, and documentation workflows for Medicare Advantage organizations. Understanding the scope of the update helps stakeholders prepare for dual-model reporting during the transition period and monitor the impact on patient-level risk scores.

Article Sections

1. What's Different in V28

   Overview of the model update, including broad structural changes, phased implementation, and the types of HCC revisions described in the article.

2. Constraining

   General discussion of how related HCC groupings are aligned in the updated model and how this affects comparative risk adjustment behavior.

3. Documentation Is Key

   Discussion of documentation specificity, coding support, and the role of clinical record detail during the transition period.

4. RAF Score Calculation

   Summary of the transition-period approach to calculating risk scores using both model versions and the timing-based blending concept.

5. Succeeding During the Transition

   High-level discussion of operational challenges created by managing two versions of the model at once and the need to assess population impact.

6. Conclusion

   Closing remarks on monitoring top conditions, preparing workflows, and using technology to support risk adjustment management.