This study aims to address the question: Why did transition countries enact laws related to social health insurance (SHI) at different times, even though they experienced dissolution of the Soviet Union at the same time in the early 1990s? We used Ragin's fuzzy-set qualitative comparative analysis to investigate the configurations of causal conditions that affected the speed of developing SHI-related legislation in 24 post-socialist countries. The potential causal conditions were health status, economic status, level of governance, level of democracy, issue salience, and number of medical professionals. We found 3 pathways that led to the enactment of SHI-related laws and 1 pathway that inhibits enactment. The key factors impacting enactment of SHI-related laws were non-corrupt governments and realization of democracy. In addition, medical professionals' involvement in policymaking could be the factor to enact SHI-related laws. Further research is needed for more in-depth analysis regarding what the laws specifically include, type of health insurance systems that were adopted based on the laws, and if the legislation contributed toward achieving universal health coverage.
Keywords: USSR; health; health care reform; insurance; legislation; universal health insurance.