Impact of Indemnity Insurance on Healthcare Utilization in South Korea

In a recent study on South Korea's healthcare insurance dynamics, indemnity-type private insurance was linked to higher outpatient healthcare utilization compared to fixed-benefit insurance. Utilizing data from the Korea Health Panel Survey (KHPS) between 2019 and 2020, the research focused on a demographic without chronic diseases, minimizing variables related to pre-existing conditions.

The study analyzed 3,320 participants under the age of 65, with 2,686 enrolled in indemnity-type insurance and 634 in fixed-benefit plans. Results revealed that individuals with indemnity insurance engaged more in outpatient activities and sustained higher outpatient expenses compared to those with fixed-benefit plans. This pattern suggests that the reduced out-of-pocket expenses with indemnity plans lead to increased outpatient visits.

Korea's healthcare system operates primarily through the National Health Insurance (NHI), which provides universal coverage while private health insurance (PHI) fills existing gaps. Indemnity insurance, covering actual expenses up to policy limits, serves as a significant complement to the NHI. Conversely, fixed-benefit plans offer predetermined payouts, maintaining some cost sensitivity for policyholders.

This differential impact of indemnity insurance is noteworthy given the high healthcare accessibility in Korea and may indicate moral hazard characteristics, where decreased cost-sharing results in heightened service utilization. Although the study identified significant outpatient activities, it found no notable differences in emergency or inpatient costs within the primary cohort under indemnity plans. Yet, subsequent annual analyses showed a later correlation with increased inpatient expenses.

Internationally, countries like France, the United States, and Australia exhibit similar trends where private insurance impacts medical service utilization. This emphasizes the importance of examining such expansions within Korea's mixed healthcare framework. The refinement of indemnity insurance plans reflects ongoing regulatory efforts to address overutilization concerns and alleviate systemic cost pressures.

The study's cross-sectional nature limits the establishment of direct causation, recognizing possible selection bias, where individuals anticipating higher medical needs might prefer indemnity plans. Despite these limitations, the research highlights crucial aspects of insurance design and implications on healthcare consumption, encouraging further longitudinal studies to validate findings and adjust insurance structures to balance cost-effectiveness and consumer demands within South Korea's healthcare system.