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MLR (Medical Loss Ratio) Regulation

Summary: Federal law caps insurer profits as a percentage of spending, creating incentive for higher costs.

What is MLR?

The Medical Loss Ratio is the percentage of premium revenue that insurers must spend on actual medical care (rather than administration and profit).

Requirements (from Affordable Care Act): - Large group market: ≥85% on medical care - Small group/individual market: ≥80% on medical care

Remaining 15-20% covers: - Administrative costs - Marketing - Profit

The Math

Premium revenue: $1,000
Required medical spending (80%): $800
Available for admin + profit (20%): $200

If insurer negotiates costs down to $600: 

Premium revenue drops to: ~$750
Available for admin + profit (20%): $150

Result: Lower costs = lower absolute profit

This is the opposite of normal business incentives.

Intent vs. Reality

Original intent: - Prevent insurers from spending too much on overhead - Ensure customers get value for their premiums - Reduce "wasteful" insurer profit

Actual effect: - Insurers have no incentive to aggressively reduce costs - Higher healthcare spending = higher insurer revenue - "Negotiations" with hospitals become less aggressive

Wouldn't Insurers Still Compete on Price?

In theory, yes. In practice, no:

  1. Employer-based system - Most customers don't directly choose/pay
  2. Weak price sensitivity - Employers pay bulk of premium
  3. Network lock-in - Can't easily compare across different provider networks
  4. Administrative complexity - Switching is painful

Alternative Structures That Would Work Better

Fixed-fee model: - Insurer gets paid $X per person per year - Keeps all savings from cost reduction - Incentivized to negotiate lower prices

Bundled payments: - Fixed price for an episode of care - Provider keeps savings, absorbs overruns - Direct incentive for efficiency

Neither is widely used in the US.

Evidence

  • Insurer profit margins have remained stable as costs increased
  • Largest insurers don't drive aggressive price competition
  • "Negotiated rates" are often discounts from artificially inflated "list prices"

Parent Causes

  • 1.2 - Insurer Incentives
  • Affordable Care Act regulation (well-intentioned but backfired)

Consequences

  • Insurers tolerate high hospital prices
  • System remains expensive without cost pressure
  • 1.8 - Nash Equilibrium - Stable but inefficient
  • 1.7.3 - Inflated Prices - Artificially high baseline enables "discounts"