National Health Insurance Copayments in South Korea Explained

Mijan Mijan • 7 August 2026

National Health Insurance Copayments in South Korea Explained

Introduction

South Korea’s healthcare system is known for providing high-quality medical services at relatively affordable costs compared with many other countries. A major reason is Korean National Health Insurance (NHI), which helps residents access hospitals, clinics, medications, examinations, and treatments while reducing the financial burden.

However, National Health Insurance does not usually cover 100% of medical expenses. Most patients are required to pay a portion of covered healthcare costs themselves. This payment is known as a copayment or co-payment.

Understanding how copayments work is important for anyone using healthcare services in South Korea, including foreign residents, expatriates, international students, and medical tourists considering treatment in Korea.

Copayment amounts vary depending on factors such as the type of healthcare service, the level of medical facility, the patient’s condition, and whether the service is covered by NHI.

This guide explains National Health Insurance copayments in South Korea, including how they work, typical payment structures, differences between hospitals and clinics, special reductions, and important information for foreign patients.

Understanding National Health Insurance Copayments

What Is a Copayment?

A copayment is the portion of a medical bill that a patient pays after National Health Insurance coverage is applied.

For example:

  • A medical service costs 100,000 KRW
  • NHI covers part of the approved amount
  • The patient pays the remaining portion

The percentage paid by the patient depends on the type of healthcare service and applicable insurance rules.

Why Does Korea Use Copayments?

Copayments serve several purposes within the Korean healthcare system.

They help:

  • Share healthcare costs between insurance and patients
  • Reduce unnecessary medical visits
  • Maintain the sustainability of the healthcare system
  • Encourage appropriate use of medical services

Even with copayments, NHI significantly reduces the total cost of medical care for eligible residents.

How Copayments Work in South Korea

Basic Copayment Structure

The amount patients pay depends on where they receive treatment.

Generally:

  • Local clinics have lower copayment rates
  • Larger hospitals may have higher copayment rates
  • Specialized treatments may have different payment rules

Patients usually pay their portion directly at the hospital or pharmacy after receiving healthcare services.

Factors That Affect Copayment Amounts

Several factors influence how much a patient pays.

These include:

  • Type of medical service
  • Healthcare facility level
  • Treatment category
  • Whether the service is covered by NHI
  • Patient eligibility for special reductions

Copayments at Different Healthcare Facilities

Local Clinics

Local clinics are often the first point of contact for common health issues.

They typically provide care for:

  • Minor illnesses
  • Routine consultations
  • Basic treatments
  • Follow-up care

Copayments at clinics are generally lower compared with larger hospitals.

General Hospitals

General hospitals provide more specialized medical services.

Patients may visit these facilities for:

  • Specialist consultations
  • Advanced testing
  • More complex conditions
  • Hospital treatment

Copayments are usually higher than at local clinics.

University Hospitals and Tertiary Hospitals

Large university hospitals provide advanced medical care and specialized treatment.

They commonly handle:

  • Serious illnesses
  • Cancer treatment
  • Complex surgeries
  • Rare medical conditions

Patients may pay a higher portion of costs, especially when visiting these hospitals without appropriate referral procedures.

Copayments for Common Healthcare Services

Doctor Consultations

Doctor visit costs depend on:

  • Clinic or hospital type
  • Consultation category
  • Insurance coverage

NHI reduces the cost of eligible medical consultations, while patients pay the remaining copayment.

Prescription Medications

After receiving a prescription, patients usually pay part of the medication cost at a pharmacy.

Costs depend on:

  • Type of medication
  • Coverage status
  • Treatment duration

Many commonly prescribed medicines receive NHI support.

Diagnostic Tests

Medical tests may involve copayments.

Examples include:

  • Blood tests
  • X-rays
  • Ultrasound
  • CT scans
  • MRI scans

Coverage depends on whether the test is medically necessary and approved under NHI guidelines.

Copayments for Hospitalization

Inpatient Care Costs

When a patient is admitted to a hospital, NHI generally covers part of eligible inpatient expenses.

Patients may still pay for:

  • Daily hospitalization charges
  • Certain treatments
  • Meals or additional services
  • Non-covered items

The final amount depends on the length of stay and treatment received.

Private Hospital Rooms

Many Korean hospitals offer private or upgraded rooms.

These may require additional payment because they are often not fully covered by NHI.

Patients should ask about room charges before admission.

Copayments for Surgery and Major Treatments

Surgery Costs

Medically necessary surgeries may receive NHI coverage.

Patients usually pay a portion of:

  • Surgical fees
  • Hospital services
  • Medical supplies
  • Related treatments

The exact copayment depends on the procedure and insurance category.

Serious Disease Support Programs

South Korea provides additional financial protection programs for certain serious illnesses.

Patients with eligible conditions may receive reduced copayment rates.

These programs may apply to diseases such as:

  • Certain cancers
  • Rare diseases
  • Serious chronic conditions

Eligibility depends on government criteria.

Copayments for Foreign Residents in Korea

Do Foreigners Pay the Same Copayments?

Foreign residents enrolled in Korean National Health Insurance generally follow the same copayment rules as Korean citizens.

However, costs may differ depending on:

  • Insurance enrollment status
  • Treatment type
  • Healthcare provider
  • Eligibility for special programs
Foreign Visitors Without NHI

Foreign visitors who are not enrolled in Korean National Health Insurance usually need to pay medical expenses themselves.

They may use:

  • Travel insurance
  • International health insurance
  • Private payment options

Medical costs without insurance can be significantly higher.

Services Usually Not Covered by NHI Copayments

Non-Covered Medical Services

Some healthcare services are outside NHI coverage.

Patients may need to pay the full cost for:

  • Cosmetic procedures
  • Optional health screenings
  • Certain advanced treatments
  • Premium services
Cosmetic and Aesthetic Treatments

Many cosmetic treatments in South Korea are considered non-medical or elective services.

Examples may include:

  • Cosmetic surgery
  • Aesthetic skin procedures
  • Beauty-focused treatments

These services usually require private payment.

Reducing Healthcare Costs in Korea

Use the Right Healthcare Facility

For common health concerns, visiting a local clinic can often reduce costs compared with larger hospitals.

Consider:

  • Starting with a clinic
  • Using referrals when needed
  • Choosing appropriate healthcare providers
Check Coverage Before Treatment

Before receiving expensive procedures, ask:

  • Is this covered by NHI?
  • What will my copayment be?
  • Are there additional charges?

This helps prevent unexpected bills.

Use Available Support Programs

Patients with certain conditions may qualify for additional financial assistance.

Ask healthcare providers or the National Health Insurance Service about available programs.

Copayment Tips for International Patients

Bring Insurance Information

Foreign residents should carry:

  • Residence Card
  • NHI information
  • Previous medical records

This helps hospitals process insurance benefits correctly.

Ask for Cost Estimates

Before major procedures, request information about:

  • Expected total cost
  • Insurance coverage
  • Patient responsibility

Many Korean hospitals provide detailed billing explanations.

Keep Medical Receipts

Save:

  • Hospital bills
  • Pharmacy receipts
  • Treatment records

These documents may be useful for insurance claims or personal records.

Healthcare Costs in Busan

Understanding Copayments in Busan

Busan has a wide range of healthcare facilities, including:

  • Local clinics
  • General hospitals
  • University hospitals
  • Specialized medical centers

NHI copayment rules apply throughout South Korea, including Busan.

Tips for Patients in Busan

Foreign residents should:

  • Choose healthcare providers based on medical needs
  • Confirm insurance coverage before treatment
  • Use international patient services when available
  • Keep healthcare documents organized

Common Mistakes Patients Make

Assuming NHI Pays Everything

National Health Insurance reduces costs but does not eliminate all medical expenses.

Patients should always confirm their expected payment.

Choosing Large Hospitals for Simple Problems

University hospitals provide advanced care but may involve higher costs.

For minor conditions, local clinics are often more practical.

Ignoring Non-Covered Charges

Some services may appear during treatment that are not covered by NHI.

Ask healthcare providers about additional expenses.

Frequently Asked Questions

What is a copayment in Korean National Health Insurance?

A copayment is the portion of a covered medical expense that the patient pays after NHI coverage is applied.

Do foreigners pay copayments in South Korea?

Yes. Foreign residents enrolled in NHI generally pay copayments according to the same rules as Korean citizens.

Does NHI cover 100% of healthcare costs in Korea?

No. Patients usually pay a portion of eligible healthcare expenses.

Are hospital copayments higher than clinic copayments?

Generally, larger hospitals have higher patient payment portions compared with local clinics.

Are medications covered by NHI?

Many prescription medications are covered, but patients usually pay part of the cost.

Are MRI and CT scans subject to copayments in Korea?

Yes. Covered imaging services usually involve patient copayments.

Can senior citizens receive reduced copayments?

Some seniors and patients with certain medical conditions may qualify for reduced costs.

Are cosmetic treatments covered by NHI?

Most cosmetic and aesthetic treatments are not covered by National Health Insurance.

Conclusion

National Health Insurance copayments are an important part of understanding healthcare costs in South Korea. While NHI provides strong financial protection and makes medical care more affordable, patients are still responsible for paying a portion of eligible healthcare expenses.

For foreign residents, learning how copayments work can make healthcare planning easier and prevent unexpected bills. Costs vary depending on the healthcare facility, treatment type, and insurance eligibility.

Whether receiving care in Busan or another part of South Korea, patients can manage medical expenses more effectively by checking coverage, choosing appropriate healthcare providers, and understanding their responsibilities under the NHI system.