Coinsurance

Coinsurance (or co-insurance) is an insurance term that means splitting or spreading risk among multiple parties. Expressed as a percentage, it describes what portion of health care costs will be paid by an insurance company after the insured person has exceeded their deductible up to the policy’s stop-loss (after which all related costs are typically covered). Coinsurance is similar but distinct from copayment, another form of cost-sharing.