All glossary terms
Payers & Insurance

Reinsurance

Reinsurance is insurance purchased by an insurer or self-funded health plan to cap its exposure to unusually large or catastrophic claims. It transfers a portion of risk to a reinsurer, stabilizing the primary plan's finances.

What is Reinsurance?

Reinsurance is insurance that an insurer or a self-funded health plan buys to protect itself against unusually large or catastrophic claims. In effect, the primary plan transfers a slice of its risk to a reinsurer in exchange for a premium.

A common form is stop-loss coverage, which begins paying once an individual's claims or the plan's total claims exceed a set threshold. The arrangement caps the primary plan's exposure on the most expensive cases.

Why does Reinsurance matter?

A single catastrophic case, such as a complex transplant or a prolonged intensive-care stay, can be financially destabilizing for a plan. Reinsurance smooths that volatility by absorbing the tail of extreme costs, making the plan's finances more predictable.

This stability is especially important for self-funded employers and smaller health plans that bear claims risk directly. By limiting downside exposure, reinsurance allows them to offer coverage without the threat that a few outlier patients could overwhelm their budget.

Also searched as
  • reinsurance definition
  • what is reinsurance
  • reinsurance meaning health insurance
  • stop-loss vs reinsurance
  • reinsurance for self-funded plans
  • how does reinsurance work
Related in Payers & Insurance
Browse the full glossary