Coinsurance
Coinsurance -sometimes called the reimbursement rate - is the percentage of eligible health or dental expenses your plan will pay after any deductible. It’s the insurer’s share of the bill, with the remainder paid by you. Typical plans cover 70–100% of eligible costs; the rest is your out-of-pocket portion.
How It Works
Coinsurance is usually written as a percentage, so an 80 percent coinsurance means your plan covers 80 percent of the covered amount of an eligible expense and you pay the remaining 20 percent out-of-pocket. It applies only after you have satisfied your deductible, the set amount you must pay out of pocket before your plan coverage kicks in if your plan has one, and unlike that deductible it then applies to every eligible expense after the deductible is met. Before the percentage is calculated, plans may first limit the eligible expense to a reasonable and customary charge or to a provincial dental association fee guide. Coinsurance is one of the ways benefit plans share healthcare costs between the insurer and the insured, which helps keep group plan premiums more affordable and encourages responsible use of services. As a rule, a higher coinsurance percentage paid by the plan generally comes with more comprehensive coverage and means you pay less out-of-pocket.
Example:
Suppose your Canadian health and dental plan reimburses physiotherapy at 80 percent coinsurance and you have already met your annual deductible. When you visit the physiotherapist for an eligible visit, your plan pays 80 percent of the eligible cost and you cover the remaining 20 percent out-of-pocket. If your plan instead covers major dental work at only 50 percent, you would pay half of that eligible cost yourself, which shows how coinsurance can differ by benefit category within the same plan.
What to Watch For:
Do not assume one coinsurance percentage applies across your whole plan. Coinsurance percentages can differ for certain benefits, such as major dental work or orthodontics, rather than being uniform across the whole plan, and coinsurance can also vary by employee group. It is common, for instance, for a Canadian benefits plan to have 100 percent coinsurance for basic dental but only 50 percent for major restorative dental. Remember too that plans may limit eligible expenses to a reasonable and customary charge or to a provincial dental association fee guide, and these limits are applied to the claim before the coinsurance percentage is calculated.



