South Korean Patients Recover Small Share of Disputed Medical Charges
Data released by Democratic Party Representative So Byeong-hun shows patients in South Korea recovered only 13.4% of improperly billed non-benefit medical expenses through the Health Insurance Review and Assessment Service from 2023 to August 2026. Many patients pay out of pocket for treatments that should qualify for National Health Insurance coverage. One major tertiary hospital repeatedly ranked highest in refund cases, pointing to oversight gaps.
The data covers 2023 through August 2026 and was released by Democratic Party Representative So Byeong-hun of the National Assembly Health and Welfare Committee. Annual refunded amounts were 1.548 billion won in 2023, 2.732 billion won in 2024, 1.774 billion won in 2025, and 778 million won by August 2026, totaling 6.832 billion won.
Most registered refund reasons involved fully covered baseline care wrongly classified as non-benefit, at 52.7%, while 7.6% concerned items ineligible for separate fees. One major tertiary hospital repeatedly ranked highest in refund counts: 80 in 2023, 66 in 2024, 53 in 2025, and 34 through August 2026.
Patients who pay upfront for care may remain unaware they can challenge non-benefit charges, so the low recovery share could leave some households bearing avoidable costs. Repeated refund cases at large hospitals may prompt greater scrutiny of billing practices and could encourage regulators to prioritize audits and clearer guidance. If outreach improves, affected patients may gain better access to refunds, while hospitals could face pressure to correct recurring administrative errors. The broader effect may depend on enforcement follow-through rather than individual complaints alone.