Comprehensive Guide to Applying for the Medical Expense Co-payment Cap and Checking Refunds

Thumbnail: Comprehensive Guide on How to Apply for the Medical Expense Co-payment Cap and Check Refunds

If you spent a lot on medical expenses last year, right now Health insurance refundYou need to check. Out-of-pocket maximum systemIf annual medical expenses exceed the upper limit based on income level, the excess amount A system that returns the full amount in cashno see. National Health Insurance Service websiteYou can check your eligibility in just one minute through this, and if you do not apply within three years from the date of occurrence The right has expiredSo it becomes Be sure to check as soon as possible.Must do.

The Co-payment Ceiling System is a system in which the National Health Insurance Service covers the difference if your annual co-payment for hospital expenses exceeds the individual income bracket ceiling. Since the right to a refund is forfeited if you do not apply within three years from the date of occurrence, please check immediately on the National Health Insurance app or the Service website.

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What is the Co-payment Ceiling System?

The co-payment ceiling system is a safety mechanism that guarantees that the total medical expenses for covered items borne by a subscriber from January 1 to December 31 do not exceed an income-based ceiling. The purpose is to ensure that even if medical expenses increase due to frequent hospital visits, the amount paid does not exceed the set ceiling amount determined by household income.

However, not all hospital expenses are subject to aggregation. Only items covered by health insurance are included, while non-covered items such as manual therapy, nutritional injections, selective benefits, and fees for 2- or 3-person premium wards are excluded. You must clearly understand that this system applies only to medical treatments covered by health insurance.

2026 Income Quintile Upper Limit Standards

The maximum out-of-pocket payment limit is determined differentially across the 10th decile based on the level of health insurance premiums paid by subscribers each month. Since the limit is set lower for lower incomes, subscribers can receive greater benefits in terms of actual medical cost reduction.

The above criteria are estimates and are applied differentially based on actual income brackets. For example, if a subscriber in the lowest income bracket (1st quintile) spends 3 million won on medical expenses, the entire 2.13 million won—after deducting the 870,000 won ceiling—is eligible for a refund. Identifying the ceiling amount corresponding to your income bracket in advance helps in estimating your expected refund.

The difference between advance payment and post-reimbursement

Refunds are broadly divided into two methods. Advance payment applies when the patient's co-payment has already exceeded the maximum limit while receiving inpatient treatment at the same hospital. In this case, the hospital directly bills the National Health Insurance Service, and the matter is processed automatically, so the patient does not need to pay the excess amount directly.

On the other hand, post-reimbursement applies when the combined amount from using multiple hospitals exceeds the upper limit. The National Health Insurance Service sends out a notice by mail every August after final income is determined, and you must apply in person after receiving the notice. Both methods incur no separate costs and are benefits guaranteed by the government.

How to Check and Apply for Online Refunds

You can check immediately online without having to wait for mail from the Corporation. If you are using a PC, simply select "Refund Inquiry Application" from the "Minwon Yeogiyo" menu on the National Health Insurance Service website. On mobile, install the "The Health Insurance" app to easily check your details, and complete the application by entering your bank account number.

Once the application is complete, the funds are usually deposited into your account within 1 to 3 days. Please be aware of smishing attempts that request your account number via phone or text message. The Corporation never asks for your account number via text, so you must use only official channels.

Reasons why you must apply within 3 years

This refund has a validity period of three years from the date of accrual. If this period expires, the right to claim the refund is forfeited, so you cannot receive it back, no matter how large the amount. Since it is common for recipients to fail to receive the refund due to lost notices or changes in address, it is necessary to develop the habit of checking periodically yourself.

Since the recipients of refunds for the previous year's medical expenses are finalized around August every year, it is best to check at that time. Forgetting Hidden medical expensesFinding it is a small but solid help to your household finances. Right now Check Co-payment Ceiling Systemthrough Expiring refundsPlease make sure to check if there is any.

Frequently Asked Questions

What is the co-payment ceiling system?

This is a system in which the National Health Insurance Service covers or refunds the excess amount if the annual out-of-pocket medical expenses exceed the individual income bracket limit.

Which medical expenses are eligible for reimbursement?

Only hospital expenses for items covered by health insurance are included, and non-covered items such as manual therapy or premium ward fees are excluded.

By when do I have to apply for the refund?

If you do not apply within 3 years from the date the refund is generated, your right to claim will expire, so you must apply within the period.

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How do I check and apply for a refund online?

You can check your eligibility and apply through the "Minwon Yeogiyo" menu on the National Health Insurance Service website or the "The Health Insurance" app by entering an account in your name.

A Comprehensive Guide to Applying for the Medical Expense Co-payment Cap and Checking Refunds