Which of the following typically triggers coinsurance in a health insurance plan?

Coinsurance in a health insurance plan typically kicks in after an insured individual has met their deductible. The deductible is the amount the insured must pay out-of-pocket for covered healthcare services before their health insurance begins to share the costs. Once the deductible has been satisfied, the coinsurance arrangement takes over, meaning that the insurer and the insured will split the costs of the covered services according to the specified percentage outlined in the policy.

This concept is crucial as it outlines the shared responsibility between the insurance provider and the policyholder once the initial threshold (the deductible) is met. It's important to understand that coinsurance does not apply if the deductible hasn’t been fully paid, which is why it’s essential for individuals to be familiar with their deductible amounts in order to understand when their insurance benefits are fully available.