Can You Use National Health Insurance at Korean Hospitals? (2026 Update)

Korea's National Health Insurance does not cover overseas patients visiting short-term for treatment, and medical costs are, in principle, paid out of pocket. Instead, patients can obtain English-language documents to claim reimbursement separately from their home insurer.

Key Takeaways

• Korea's National Health Insurance applies only to those eligible for enrollment; overseas patients visiting short-term for treatment are not covered, and medical costs are paid out of pocket in principle (Ministry of Health and Welfare).
• Hospitals may apply separate fee schedules for international patients, and the international patient center handles payment and document issuance (Medical Korea).
• Before treatment, patients typically pay a deposit based on the estimated cost, which is settled against the actual amount incurred at discharge.
• To file a claim with a home-country insurer, documents such as an English-language medical bill, itemized statement, and medical certificate are needed, and required formats vary by insurer.
• Travel insurance generally does not cover travel undertaken for the purpose of treating a cancer that has already been diagnosed.

Why Doesn't Korean Health Insurance Apply?

National Health Insurance is a public insurance system that covers individuals eligible for enrollment in Korea. Since overseas patients visiting briefly for treatment are not eligible to enroll, items that would be covered for Korean nationals are billed as non-covered (self-pay) items for overseas patients (Ministry of Health and Welfare). This is a structural difference in the system, and each hospital sets its own fee schedule for international patients. Payment can be made by card or bank transfer, with the amount and method specified in the estimate issued by the hospital.

How Does Payment for Medical Costs Proceed?

• Step 1: Before treatment begins, a portion of the estimated cost is paid as a deposit.
• Step 2: During the course of treatment, tests, surgery, hospitalization, and medication costs are itemized and recorded.
• Step 3: At discharge, the actual cost is compared against the deposit and settled.
• The review fee of KRW 1,000,000 (about US$730) and coordinator fees are separate from medical costs; the review fee is deducted from the treatment cost once a treatment contract is signed. If test results lead to a change in the treatment plan, patients receive a revised estimate and can decide whether to proceed.

What Documents Are Needed to File a Claim with a Home-Country Insurer?

• Insurers accept claims only when documents clearly prove what was done, why, and how much was paid. Commonly required documents include: an English-language medical bill, an English-language itemized statement of charges (the document insurers most frequently check), an English-language medical certificate with ICD codes, an English-language admission/discharge confirmation, an operative record or procedure confirmation, an English-language medical summary/discharge summary, English-language prescriptions and medication records, and copies of test results and imaging.
• These English-language documents are not issued automatically and must be requested through the international patient center; issuance can take several days, so it's best to apply well ahead of your return date. Since required formats and items vary by insurer, it helps to confirm in writing with your insurer before traveling what documents are needed, then request exactly that list while in Korea. If documents are missing after returning home, hospitals retain records for the legally mandated period and reissuance can be requested, but since this takes time, it's better to gather everything while still in Korea.

Does Travel Insurance or International Medical Insurance Cover Cancer Treatment Costs?

• Generally, no. Travel insurance is designed to cover sudden illness or accidents occurring during travel, and entering the country specifically to treat a cancer already diagnosed is typically excluded from coverage. However, it can still be worth having, as it may help with other issues arising during the stay (accidents, infections, dental problems, etc.), emergency transport, or flight changes.
• Some international medical insurance plans, home-country public insurance, or employer-provided insurance may reimburse overseas treatment costs, but in such cases, prior approval from the insurer before treatment is often required. Starting treatment without prior approval can result in a claim being denied later, so it's essential to confirm the correct order of steps. When a government or insurer is covering treatment costs directly, supporting documentation is typically submitted to the hospital in advance.

FAQ — What If Different Insurers Require Different Documents?

Since formats and required items vary by insurer, the most reliable approach is to confirm in writing with your insurer before coming to Korea exactly which documents are needed from the Korean hospital. Standard documents include an English-language itemized statement of charges, a medical bill, a medical certificate, an admission/discharge confirmation, an operative record, and a medical summary — simply request this list from the international patient center.

FAQ — Is Prior Insurer Approval Required Before Treatment?

For insurance plans that reimburse overseas treatment costs, prior approval is generally required. Starting treatment without approval can lead to a denied claim, so confirming the correct sequence is essential, and the written opinion needed for approval can be prepared in advance.

Sources and Notes

This article was prepared based on insurance and documentation notes (Ministry of Health and Welfare, Medical Korea, HiKorea). This content is intended for general informational purposes only; diagnosis, treatment methods, and outcomes may vary depending on individual circumstances. Please consult with your medical team for an accurate diagnosis and treatment plan.