Complete Documentation of Calculations and Variables
1. Annual Margin
Formula: Annual Margin = (Benchmark − Bid) × Rebate% × Members × 12
Shows yearly surplus or deficit relative to CMS county benchmarks.
2. Overpriced / Underpriced
PMPM Difference: Benchmark − Bid
Total Annual Impact: (Benchmark − Bid) × Members × 12
Positive → underpriced, Negative → overpriced.
3. ROI – Benefit Enrichment
- Benefit Increase PMPM: Extra supplemental benefits (dental, vision, OTC, transport).
- Retention Gain: Additional members retained or gained due to better benefit value.
Formula: ROI_benefits = (Incremental Revenue − Cost of Benefit Enrichment) ÷ Cost of Benefit Enrichment
4. ROI – Care Management
- Care Management Savings PMPM: Reduced medical claims from programs such as chronic condition management, case management, high-risk outreach.
- Program Cost: One-time or recurring cost of care management program.
Formula: ROI_care = (Medical Cost Savings − Program Cost) ÷ Program Cost
5. Composite ROI Score
Formula: Composite ROI = w1 × ROI_benefits + w2 × ROI_care
Weighted score to rank plans based on overall improvement potential.
6. Other Variables
- Benchmark: CMS county-level capitation rate.
- Bid: Plan-submitted PMPM cost.
- Rebate Percentage: Portion of overpayment that can be returned based on Star Ratings.
- Membership: Estimated plan enrollees.
- Benefit Increase: PMPM investment in supplemental benefits.
- Care Management Savings: PMPM reduction in medical spend.
7. Interpretation
Positive margins and ROI indicate improvement opportunity; negative values indicate potential loss or overpricing.
ROI Benefits Formula:
ROI_benefits = (Incremental Revenue − Cost of Benefit Enrichment) ÷ Cost of Benefit Enrichment
This measures the return on investment from enriching plan benefits:
- Incremental Revenue: additional revenue from increased enrollment due to richer benefits (ΔEnrollment × Revenue PMPM × 12 months).
- Cost of Benefit Enrichment: extra cost of providing benefits to both current and new members (Benefit Increase PMPM × Enrollment × 12 months).
- ROI Interpretation: ROI > 1 means the enrichment generates net margin greater than its cost; ROI < 0 means the enrichment costs more than it returns. Essentially, it shows how profitable benefit enhancements are relative to their investment.
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Bid Gap to Break-Even measures how a plan’s submitted bid compares to the minimum it needs to cover costs and achieve its target margin. It is calculated as Bid − Break-Even Cost, where Break-Even Cost = True Cost + Target Margin. A positive gap means the bid is above break-even and generates extra margin. A negative gap means the bid is below break-even, implying a potential loss if costs materialize as expected. This metric helps identify which plans are financially safe versus risky for strategic interventions.
