Seniors who have lived in the US relying on Medicare and supplemental insurance often hesitate to move back to Korea due to concerns over medical costs. Because Medicare cannot be used outside the US, the very first homework for reverse immigrants is figuring out how to enroll in South Korea health insurance. Put simply, US citizens can also qualify by staying in Korea for a certain period, and the premiums are remarkably lower compared to US private insurance.
6-Month Stay Requirement and Enrollment
Under the National Health Insurance Act, foreigners and overseas Koreans are automatically enrolled as local subscribers if they continuously stay in South Korea for six months or more. Stay duration is determined by immigration records, and a cumulative departure of 30 days or less during the six-month period still counts as continuous residence. Staying abroad for more than 30 days at once resets the six-month clock from the date of reentry. Those who have completed domestic residence reporting under the Overseas Korean (F-4) status may sometimes enroll without waiting six months, making prompt residence reporting advantageous. While adding dependents to a family member’s coverage is an option, a six-month residency requirement has also applied to dependents since April 2024.
Monthly Premiums and Cost Breakdown
Local subscriber premiums are calculated based on domestic income, property, and vehicles. Seniors without domestic income or real estate are subject to the minimum insurance premium for foreign local subscribers, which is set at 158,630 KRW per month for 2026. Living arrangements like deposit-based senior housingβsuch as VL Le Westβdo not count as owning domestic real estate, making it advantageous for premium calculations. Setting up automatic transfers for premium payments is standard, and since default can restrict visa extensions, setting it up immediately after moving in is recommended.
Coverage, Medical Benefits, and US Travel
Once enrolled, subscribers receive the same benefits as South Korean nationals. National health insurance covers about 80% of inpatient treatment costs, while outpatient care is covered between 30% and 70% depending on the facility and item. Subscribers are eligible for national health checkups every two years and are concurrently enrolled in long-term care insurance to receive grade assessments when care is needed later. When staying in the US for more than a month, benefit payments are suspended and premiums are exempted, with eligibility automatically restored upon reentry. However, because the initial six-month continuous stay requirement applies only to initial enrollment, staying as long as possible during the first six months is the best way to secure coverage quickly.
