What is Risk Score Reconciliation? Definition, Formula, and Benchmark

Risk score reconciliation is the CMS mechanism that updates Medicare Advantage payments after each payment year based on the final risk scores calculated from submitted encounter data. CMS pays MA plans prospectively using the best-available risk score at the start of each payment year, then reconciles after the year closes and all submission deadlines have passed. The reconciliation difference — true-up if final scores exceed prospective, clawback if they fall short — typically flows to plans 12–18 months after the payment year ends.

Three main reconciliation events occur per payment year. Mid-year reconciliation (typically July of the payment year) updates payments based on diagnoses submitted through a mid-year cutoff. Final reconciliation (following calendar year) incorporates all diagnoses submitted by the final deadline, producing the definitive payment for the year. Additional true-up passes may occur 2–3 years after the payment year as late-submitted data and RADV findings are incorporated.

Reconciliation math is straightforward in principle but operationally complex. Each member's risk score is recalculated with the finalized data; aggregate contract-level payments are recomputed; the difference against prospectively paid amounts becomes the reconciliation line. Complications arise from membership changes during the year, the coding intensity factor's annual publication timing, and the V24/V28 blended factor during the transition window.

Plans maintain reconciliation reserves — actuarial provisions for expected true-up or clawback — because the 12–18 month lag means reconciliations affect the following year's financial reporting. MA plans' 10-K filings typically disclose reconciliation reserve balances and the drivers of any material change.

For providers in two-sided risk arrangements with MA plans, reconciliation flows downstream through the plan's contracts. A group that improved its panel's risk scoring during the year may receive reconciliation-driven payments the following year; a group whose prior-year coding was challenged in RADV may see clawbacks flow through to its payment stream. Contract clauses typically specify the reconciliation-passthrough mechanics.

The RADV overlay adds complexity. RADV recoupment is a separate process from standard reconciliation but can interact with reconciliation timing: a RADV finding for payment year 2024 may reduce 2024 risk scores after standard reconciliation has already closed, producing a late adjustment in 2026 or 2027. Plans' reserves must anticipate both routine reconciliation and RADV-driven late adjustments.

Compliance programs treat Risk Score Reconciliation as a recurring audit trigger rather than a one-time policy exercise. The practical approach is a quarterly Risk Score Reconciliation self-audit tied into the broader compliance calendar, with findings tracked against raf score and coding intensity factor so a Risk Score Reconciliation gap cannot silently persist from one audit cycle to the next. Reviewers on this site pair every Risk Score Reconciliation reference with the corresponding regulatory citation so the policy owner can trace the requirement back to its authoritative source.