Health insurance is vital for achieving universal health coverage. However, experts often worry about health insurance utilization effects. A recent study in Thailand analyzed the Social Security Scheme (SSS) to understand these dynamics. It found that insurance coverage significantly increases the use of medical services. This phenomenon is known as ex-post moral hazard. While this suggests people use more care because it is cheaper, part of the increase reflects improved access to necessary treatment.

Understanding Health Insurance Utilization Effects

Researchers used a difference-in-differences approach to study this impact. They found that the magnitude of utilization varies across different groups. It depends on the type of medical expenditure and the specific study period. Consequently, expanding insurance improves overall health outcomes but puts fiscal pressure on public systems. For instance, in India, the PM-JAY scheme has successfully reduced catastrophic health expenditures. Therefore, policymakers must manage these behavioral responses to ensure long-term financial stability.

Strategies for Sustainable Health Systems

Balancing access and sustainability is a complex task for any nation. To address this, officials can implement targeted cost-management measures. Furthermore, strengthening preventive health policies can reduce the long-term need for expensive secondary care. Efficiency improvements in hospital management also play a major role in optimizing limited resources. Finally, maintaining equitable access remains the core priority for any modern healthcare system. These measures help control health insurance utilization effects without compromising patient care.

What is ex-post moral hazard in health insurance?

Ex-post moral hazard occurs when insured individuals consume more healthcare services because their out-of-pocket costs are reduced. This behavior is a common response to expanded insurance coverage globally.

How can countries balance healthcare access and cost?

Countries can use cost-sharing measures, focus on preventive care, and improve hospital efficiency. These strategies help manage utilization while ensuring that vulnerable populations still receive necessary medical care.

Disclaimer: This content is for informational and educational purposes only. It does not constitute professional medical or financial advice. Refer to the latest local and national guidelines for clinical practice.

References

Sirisankanan A et al. Does health insurance increase health care utilization? evidence of ex-post moral hazard from the Social Security Scheme in Thailand. Health Policy Plan. 2026 May 22. doi: undefined. PMID: 42175745.

Kumar S et al. Effects of the Indian National Health Insurance Scheme (PM-JAY) on Hospitalizations, Out-of-pocket Expenditures and Catastrophic Expenditures. Taylor & Francis. 2023 Aug 4.

Einav L, Finkelstein A. Moral Hazard in Health Insurance: What We Know and How We Know It. Journal of the European Economic Association. 2018.