Billing system and health care utilization: Evidence from Thailand

We examined the role of billing processes in health care utilization by exploiting a shift in provider payment from fee-for-service reimbursement towards fee-for-service direct disbursement for outpatient services in Thailand. Specifically, prior to October 2006, affected patients had to pay the full cost of outpatient treatment and subsequently received reimbursement; thereafter, these payments can be sent directly to the providers, without patients having to pay anything upfront. By using nationally representative micro-data and a difference-in-difference methodology, we show that the direct disbursement policy leads to an increase in outpatient utilization among the sick. This non-price change has long-lasting impacts and particularly increases the health care utilization of sick individuals who are living in rural areas, are less educated and earn low incomes. These findings suggest that direct disbursement helps to increase liquidity constraint individuals’ health care utilization. The results emphasize the effectiveness of behavioural interventions in health policy making.