Co-payment is part of an insurance claim that you must pay out of pocket when you make a claim before the insurer will reimburse you the remaining insured portion of the claim. Some benefit plans include deductibles and/or co-payments as part of their design. An insurer generally applies a deductible once per benefit renewal period. However, an insurer usually charges co-payments on a per-product or service basis at each visit. For example, if a patient or their health care provider submits a claim for a visit that costs $100.00 and there is a five percent co-payment, the insurer will automatically deduct five dollars and the amount they pay in reimbursement will be $95.00.