Last verified: 2026-08-27 08:07 KST
Korean healthcare is fast, cheap by most international standards, and available without an appointment. The part that catches foreign residents is not finding a doctor. It is that the system charges you differently depending on which kind of hospital you walk into — and going to the biggest one first can mean insurance pays nothing at all.
This page explains the tiers, the three separate places the system penalises skipping them, and the cap that protects you when a year goes badly.
Four tiers, and they are not interchangeable
Korean medical institutions are classified as clinics (의원), hospitals (병원), general hospitals (종합병원) and tertiary general hospitals (상급종합병원). A tertiary general hospital is defined as a general hospital meeting set requirements that specialises in high-difficulty treatment of serious illness.
The classification is not about quality of care for ordinary problems. It is about what the institution is designed for — and your share of the bill moves with it.
For NHIS-covered outpatient treatment, the ordinary patient share is commonly 30–60% depending on the institution; it is not a quote for every patient or service. HIRA lists exceptions by age, diagnosis and service, including the separate tertiary-hospital mild-condition rule below. These percentages do not cover uninsured visitors or non-covered services (비급여), which may be charged in full. Ask for the covered and non-covered amounts separately before planned care. Outpatient scope checked October 6, 2026.
The 100% rule
This is the one that costs people real money, and it is stated plainly by the Health Insurance Review and Assessment Service.
For outpatient treatment of a mild condition at a tertiary general hospital, the patient pays 100% of the total covered cost. Not 60%. All of it. Checked 2026-08-27.
Read that against the instinct a newcomer has: unwell in an unfamiliar country, go to the biggest and most reputable-looking hospital. That instinct is exactly what the rule is designed to discourage, and it converts a cheap visit into a full-price one.
For a cold, a rash, a sprain or a prescription refill, the neighbourhood clinic is both the cheapest and the correct destination. Tertiary hospitals are for serious and complex illness, usually reached by referral from a lower tier.
The penalty follows you to the pharmacy
Most people do not know this second one exists.
Where medicine for a mild condition is dispensed on a prescription written by a doctor at a general hospital or a tertiary general hospital, the pharmacy co-payment rises to 40% of the total covered cost for a general hospital prescription and 50% for a tertiary general hospital prescription. Checked 2026-08-27.
So the choice of where to be seen changes two bills, not one. A prescription from the clinic down the street is cheaper at the pharmacy than the identical prescription from a big hospital.
Referral is the route, and it is free in one direction
The system is built to move you up the tiers on a referral rather than by walking in. Worth noting on the way back down: the referral-back fee charged when a tertiary general hospital sends you to a lower tier is set at 0% to the patient.
The design intent is visible in that number. Going up without a referral is expensive; being sent back down costs you nothing.
Selected co-payment items worth knowing
| Item | Patient share |
|---|---|
| Inpatient treatment | 20% of covered cost |
| Hospital meals during admission | 50% |
| Emergency room isolation bed management fee | 10% |
| Tertiary hospital 4-bed room charge | 30% |
| Tertiary hospital 2-bed / 3-bed room | 50% / 40% |
| General hospital 2-bed / 3-bed room | 40% / 30% |
| Psychiatric individual and group therapy | 40% (28% under age 6) |
| Dental sealants, ages 18 and under | 10% |
| Referral back from a tertiary hospital | 0% |
Room type matters more than newcomers expect. A private or semi-private room carries a much higher share than a standard ward, and it is often offered rather than assigned. Ask what the room costs before agreeing to it.
The annual cap that stops a bad year becoming a disaster
Korea operates an annual out-of-pocket ceiling (본인부담상한제). Where your co-payments in a year exceed a ceiling set for your income bracket, the National Health Insurance Service covers the excess.
The ceiling is not one number — it is banded by income level under the enforcement decree, so a lower-income household has a much lower ceiling than a higher-income one. We are not printing the bands, because they are revised annually and a stale figure here is worse than none.
What matters is knowing the mechanism exists, and knowing what it does not count. Amounts excluded from the annual total include uncovered treatment, the difference for upgraded rooms, selected-benefit items, 2-bed and 3-bed room charges, and treatment received while premiums are in arrears.
That last exclusion is the one to act on. Letting premiums lapse does not only risk your immigration record — it removes you from the protection that makes a serious illness survivable financially. Enrolment and rates are in our health insurance guide.
How a visit actually goes
- Walk into a neighbourhood clinic. No appointment needed for most.
- Hand over your residence card at reception. Enrolment runs off your registration record, so name mismatches cause problems here as everywhere — see our name verification guide.
- See the doctor. Consultations are short by international standards; have your questions ready.
- Pay at reception on the way out, not later.
- Take the prescription to a pharmacy. Korea separates prescribing from dispensing, so the pharmacy is a separate shop, usually within sight of the clinic.
- Keep the receipt. It is what a private insurer or an employer will ask for.
Language
Many clinics manage basic English; many do not. Two things help more than hoping.
Write your symptoms, your allergies and any regular medication into a note in Korean before you go — a translation app is fine for this, and doing it beforehand removes the hardest part of the visit. And the Korea Travel Hotline on 1330 operates 24 hours in Korean, English, Japanese and Chinese and will interpret a live conversation, which covers the moment you are standing at a reception desk not understanding a question.
For anything that dispatches an ambulance, 119 is the number, and the interpretation routes behind Korea’s help lines are in our help lines guide.
What this page is not
This is administrative information about how the payment system works. It is not medical advice, and it does not tell you when a symptom is serious. If you are unsure whether something is urgent, that is a question for a clinician or for 119 — not for a website.
Verification note. On September 24, 2026 an AI-assisted check compared the 100% of the total covered cost for a mild condition at a tertiary general hospital and the 20% inpatient co-payment against the Health Insurance Review and Assessment Service, and confirmed the official sources linked in this guide still resolve to the same pages. I publish this guide under my own name and am responsible for what it says. Rules and fees in Korea change often; if you spot something out of date, email hello@90dayskorea.com and it will be re-checked and corrected.
Sources
- Health Insurance Review and Assessment Service — outpatient co-payment: the 100% rule for mild conditions at tertiary general hospitals, and item-specific rates (first source) (Korean)
- HIRA — co-payment rates and amounts: room-type rates, selected-benefit items (second source, same agency, separate page covering the room and inpatient figures) (Korean)
- Ministry of Government Legislation, Easy Law — inpatient 20% plus 50% of meals, under National Health Insurance Act art. 44(1) and enforcement decree art. 19(1) and Table 2; annual out-of-pocket ceiling under Table 3; definition of a tertiary general hospital (independent second source for the inpatient and cap figures) (Korean)
- National Law Information Center — Rules on National Health Insurance Benefit Standards, including the prescribed receipt form stating outpatient 30–60% by institution type and inpatient 20% (Korean)
- National Health Insurance Service — English portal
Last verified: 2026-08-27 08:07 KST. Co-payment rates and the annual ceiling are revised periodically. The agency and statutory sources above are the authority; this page is a reading of them on that date and is not medical advice.