Medicare Advantage Risk Adjustment Modernization: Preparing for CMS-HCC Model V28

CMS-HCC Model V28 introduces the most significant changes to Medicare Advantage risk adjustment in a decade — reshaping condition categories, diagnostic hierarchies, and the coefficients that drive plan payment. Health plans navigating blended model years through 2025 must ensure accurate data, aligned systems, and reliable forecasting to avoid compliance gaps and revenue disruption.

3-Year Transition

Blended model years extend through CY 2025

Major Model Overhaul
Diagnostic hierarchies and coefficients recalibrated.

Why V28 demands more than a technical update

For many Medicare Advantage plans, V28 readiness cannot be solved by updating mapping logic alone. The model redesign requires coordinated alignment across data engineering, compliance, finance, actuarial, and operational teams — each of whom depends on accurate, consistent, and timely data to perform.

Without that alignment, plans face:

  • inconsistent HCC mappings
  • unstable forecasts
  • data warehouse misalignment
  • reporting gaps that undermine compliance and financial clarity

The result is predictable: delayed transitions, inaccurate submissions, and uncertainty in payment projections.

At a glance

  • V28 redefines diagnostic categories and hierarchy logic.
  • Blended years require parallel accuracy across V24 and V28.
  • Plans must realign data pipelines, reporting, and QA frameworks to maintain confidence.

What you'll learn in the white paper

  • How CMS-HCC V28 reshapes risk scoring and financial forecasting.
  • How one plan partnered with MHC to validate data, rebuild pipelines, and deliver executive reporting clarity.
  • The four modernization requirements health plans must address: mapping, data warehouse alignment, reporting redesign, and QA regression.
  • The strategic benefits of modernization — including improved accuracy, operational resilience, and regulatory compliance.

"Our clients have seen up to a 40% reduction in implementation rework by aligning teams early."

- Ronny Neira, Chief Services Officer, MHC Services Group

Get the white paper: Preparing for CMS-HCC Model V28

A clear, practical guide to understanding the impact of V28 — and what health plans must modernize to achieve data integrity, forecasting precision, and long-term regulatory readiness.

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