This study aims to understand the role of contradictions and norms in health insurance claims platformisation from an inter-organisation system perspective. The study is situated in a developing country context of Ghana. A growing body of information systems research on digital platforms as a vehicle to organise public healthcare exists and continues to evolve; however, the inter-organisational perspective has received little attention. Even less is the focus on the complex relationship between the health insurance sector and health care providers. This paper, therefore, applies a sociotechnical approach using activity theory as the analytical lens and qualitative interpretive case study as the methodology. It depicts how contradictions between the various levels of the activity system influence platformisation between organisations in the health system. The findings have implications for policy research and practice.