If your health insurance renewal in Thailand arrived with an unfamiliar clause about a 30% co-payment on next year's medical bills, it is likely the result of a regulatory change introduced by Thailand's Office of Insurance Commission (OIC) in March 2025, and 2026 is the first full renewal cycle where it appears in policyholder documents. The rule applies to individually issued Thai health insurance policies, which is the type of plan many expats in Thailand hold. Those who made frequent claims for common conditions in the past year may already find the clause active in their renewal. For some, this is prompting a closer look at internationally regulated plans which sit outside the OIC framework and are not subject to the co-payment rule. For expats who want to avoid out-of-pocket costs at the hospital counter altogether, direct billing is another option worth understanding. What the co-payment rule actually meansThailand's Office of Insurance Commission (OIC) introduced a mandatory co-payment clause for individual health insurance policies issued from March 2025 onward. The rule operates across two separate thresholds. The first covers six named conditions: headache, influenza, diarrhoea, muscle inflammation, stomach acid, and gastroesophageal reflux. If you file three or more claims for any of these conditions that together exceed 200% of your annual premium, a 30% co-payment applies to all your medical costs in the following policy year. The second threshold works independently. If three or more general illness claims reach 400% of your annual premium, that also triggers a 30% co-payment. If both thresholds are crossed in the same policy year, the co-payment rises to 50%. The total co-payment is capped at 50% of your covered expenses for the year. It is not permanent. If you remain below both thresholds the following year, the clause is removed from your policy. Why expats carry more riskThe conditions listed in the OIC rule are not unusual ones. Flu, diarrhoea, GERD, and headaches are among the most common reasons people visit private hospitals in Bangkok on any given week, and private hospital billing in Thailand is not cheap. A specialist consultation for stomach-related symptoms at a private hospital in Bangkok can reach 3,000 to 5,000 baht before medication and diagnostic tests are factored in. If your annual local insurance premium is 15,000 baht, the 200% threshold sits at 30,000 baht. A couple of visits at that cost within one policy year is enough to get you there. Expats are not covered by Thailand's Universal Coverage Scheme and pay full private rates at hospitals where medical costs across Asia Pacific are rising at 14% annually, according to WTW's 2026 Global Medical Trends Survey. What to check when your renewal document arrivesThe co-payment does not apply to the year in which you crossed the threshold. It applies to the following year and covers all medical costs, including serious or critical conditions, not only the routine claims that triggered it. If your policy was issued on or after March 2025, you fall within scope. It is worth reviewing your 2025 claim history against your annual premium. If three or more claims for the listed common conditions reached 200% of that figure, the co-payment clause will appear in your renewal. How international health insurance sits outside this frameworkThe OIC co-payment rule applies specifically to OIC-regulated individual health insurance products, meaning locally issued Thai plans. Internationally regulated health insurance plans sit within a different regulatory category and are not subject to OIC Orders. Cigna Global is an internationally regulated insurer. Its plans are not OIC products, and policyholders in Thailand are not subject to the co-payment thresholds regardless of how frequently they make routine claims within a policy year. For expats comparing private health insurance options in Thailand, that is a concrete and meaningful distinction. What Cigna Global coversCigna Global offers four plan tiers, each built for expats living outside their home country on a full-time basis: Close Care provides a US$500,000 annual limit, covering your country of residence and country of nationality. Silver provides a US$1,000,000 annual limit, covering essential hospital and emergency care. Gold provides a US$2,000,000 annual limit with access to a broader range of specialist treatments. Platinum provides unlimited annual cover. Outpatient care, vision and dental, and health and wellbeing modules are available as optional add-ons across every tier, allowing you to adjust what you are paying for without changing your core level of cover. If you are on a local Thai plan and have triggered the thresholds, you could be facing 30% to 50% of your medical bills out of pocket at the hospital counter, including for serious conditions that have nothing to do with the routine claims that triggered the clause in the first place. With Cigna Global, the co-payment rule does not apply, and Cigna's direct billing network means the hospital bill is settled directly on your behalf anyway. You walk in, get treated, and leave. No upfront payment, no reimbursement claim to file. Get a free quote from Cigna Global today. If your renewal document is already in front of you, it is worth reading the terms carefully. If it has not yet arrived, now is a reasonable moment to consider whether a locally regulated plan remains the right fit for your situation. Sponsored
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