Thailand Office of Insurance Commission held a meeting of its Consumer Protection and Insurance Participation Committee to set out how copayment clauses can be applied when renewing health insurance policies at the policy anniversary, including when cost sharing can be triggered and the maximum rates that can be charged. Copayment would apply only in the following policy year where an insured meets specified claim-pattern thresholds. For inpatient claims involving minor “simple diseases” without a medical indication for inpatient treatment, copayment can be applied where there are at least three claims and an aggregate claims ratio of at least 200%. For inpatient claims excluding serious diseases and major surgery, copayment can be applied where there are at least three claims and an aggregate claims ratio of at least 400%. In each scenario, the copayment rate is capped at 30%, rising to a maximum of 50% where both sets of criteria are met; insurers can set the specific rate up to these ceilings. The OIC will oversee health insurance premium calculations and monitor fairness of copayment terms, and it highlighted the need for ongoing public communications and accurate guidance for agents and brokers, warning that providing incorrect information could result in licence revocation. The OIC will incorporate feedback from the meeting into its ongoing work on controlling improper medical expense claims and implementing copayment arrangements.