The deductible is a fixed amount that an insurance company does not pay out during a policy year.

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The maximum benefit is the maximum amount the insurance company will pay out during the term of the policy.

Copay is a fixed fee, which refers to a fixed fee that needs to be paid on the spot every time you see a doctor or buy prescription drugs.

Preferred Provider Organization. A type of health plan that contracts with medical providers. You'd pay less using in-network providers.

The percentage of costs covered by your insurance company.

The higher the coinsurance, the better the coverage.

In network refers to providers or health care facilities that are part of a health plan's network  with which it has negotiated a discount.