From phantom treatment to fake billing, improper health insurance claims top 140 billion won since 2021

Dentists’ offices accounted for the largest amount, while cases at traditional Korean medical clinics are also on the rise.

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Doctors are seen at Kyungpook National University Hospital in Daegu on Sept. 4, 2020.
Doctors are seen at Kyungpook National University Hospital in Daegu on Sept. 4, 2020.

A clinic billed the national health insurance system for treating a patient's back on Oct. 5 and 6, 2024. But an on-site inspection by health authorities showed that the patient was overseas at the time, having left the country on Oct. 4 and returned on Oct. 7.

The case is one of 7.8 million improper health insurance claims filed by local clinics over the past five years, which amounted to a total of 140.8 billion won ($104.9 million) from 2021 to September this year, according to the data from the Health Insurance Review & Assessment Service submitted to Rep. Baek Sun-hee of the Rebuilding Korea Party on Tuesday. 

On-site inspections are post-payment reviews of health insurance benefits already paid to medical institutions. The Ministry of Health and Welfare, together with the Health Insurance Review & Assessment Service and other agencies, checks whether the payments were improperly claimed.

Authorities select medical providers that are considered more likely to have made improper claims and inspect about 1 percent of all providers.

The inspections cover cases in which medical institutions claim to have treated patients who received no care or issue bills for tests, procedures or medications that were never provided. Institutions found to have made improper claims can face business suspension or fines.

Improper claims worth 25.35 billion won were uncovered at 497 institutions last year. Dentists' offices accounted for the largest amount at 6.06 billion won, followed by local clinics at 5.48 billion won and hospitals at 4.5 billion won.

성형외과 의사, 10년간 2배 가까이 증가 (서울=연합뉴스) 서대연 기자 = 성형외과 의원 의사 수가 최근 10년간 1.8배 가까이 증가한 것으로 나타났다. 28일 보건복지부와 국민건강보험공단 등에 따르면 성형외과로 표시된 의원급 의료기관에서 일하는 의사는 2022년 1월 현재 1천769명으로, 2012년(1천3명)보다 76.4% 늘어났다. 피부과 의원의 의사도 2012년 1천435명에서 2022년 2천3명으로 39.6% 늘었다. 사진은 이날 서울 시내 한 건물에 입주한 성형외과 간판. 2024.1.28 dwise@yna.co.kr/2024-01-28 15:51:27/
Signs for plastic surgery clinics stand in a street in Seoul on Jan. 28, 2024.

Improper claims worth 20.22 billion won were uncovered at 272 institutions through September this year, already about 80 percent of last year’s full-year total, the data showed.

False filings were found at 89.4 percent of the institutions inspected last year and 86.1 percent of those inspected this year.

The increase has been particularly stark at traditional Korean medicine hospitals.

Improper claims detected at traditional Korean medicine hospitals jumped from 164 million won in 2021 to 3.2 billion won through September this year — an increase of nearly 20-fold. The amount uncovered in the first nine months of this year alone has already exceeded last year’s total of 2.6 billion won.

All 18 of the Korean medicine hospitals inspected this year were found to have made improper claims.

However, because the on-site inspections do not cover every medical institution, it is difficult to determine the true scale.

경찰, 자생한방병원 압수수색 (서울=연합뉴스) 신준희 기자 = 9일 서울 강남구 자생한방병원 앞을 시민들이 지나고 있다. 경찰은 이날 수백억원대 보험사기 혐의를 받는 자생한방병원을 압수수색했다. 앞서 삼성화재와 현대해상 등 4개 보험사는 자생한방병원이 교통사고 환자들에게 한약을 무분별하게 처방해 보험금 수백억원을 챙겼다며 보험사기방지 특별법 위반 혐의 고소장을 경찰에 제출했다. 2026.7.9 hama@yna.co.kr/2026-07-09 12:36:58/
Pedestrians pass Jaseng Hospital of Korean Medicine in Gangnam District, southern Seoul, on July 9.

Critics argue that a more sophisticated review and monitoring system is needed to make up for the limited scope of inspections and prevent further losses from the national health insurance fund.

“The fact that tens of billions of won in improper claims are uncovered every year is less a sign of successful enforcement by the Health Insurance Review and Assessment Service than evidence that health insurance funds are leaking because those claims were not caught in advance,” Rep. Baek said. “Oversight and supervision must be strengthened to stop improper claims before they are paid so that premiums contributed by the public are not wasted.”


BY CHAE HYE-SEON [[email protected]]

This article was originally written in Korean and translated by a bilingual reporter with the help of generative AI tools. It was then edited by a native English-speaking editor. All AI-assisted translations are reviewed and refined by our newsroom.