coinsurance
Americannoun
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insurance underwritten jointly with another or others.
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a form of property insurance in which an insurer assumes liability only for that proportion of a loss which the amount of insurance bears to a specified percentage of the value of the property.
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a form of health insurance in which the insured party contributes a specified percentage of the total cost of medical expenses after a deductible has been reached.
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the percentage contributed by the insured party.
My coinsurance is 20%.
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noun
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a method of insurance by which property is insured for a certain percentage of its value by a commercial insurance policy while the owner assumes liability for the remainder
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joint insurance held by two or more persons
Etymology
Origin of coinsurance
Example Sentences
Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.
And coinsurance rules routinely require people to shell out even after they have hit their several-thousand-dollar deductibles.
From The Wall Street Journal ● Oct. 7, 2026
The estimate includes Medicare premiums, out-of-pocket prescription-drug costs and other medical expenses such as copayments, coinsurance and deductibles for doctor and hospital visits.
From MarketWatch ● Jul. 21, 2026
Most of those who remained in ACA plans reported larger out-of-pocket healthcare expenses in the form of higher copays, coinsurance or deductibles, according to the survey from health-research nonprofit KFF.
From The Wall Street Journal ● Mar. 19, 2026
In that case, the particulars of how each medication is covered—whether it’s a copay or coinsurance, for example—don’t matter.
From Barron's ● Mar. 5, 2026
However, critics say $1,000 or $1,500 deposited in a HSA won’t do much for someone who is paying $2,000 per month with 40% coinsurance and a $9,900 out-of-pocket maximum.
From MarketWatch ● Jan. 24, 2026
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Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.
