A new approach to successfully offering IT services is provided by cloud computing. The body of research implies that cloud technology can raise the quality of services across a range of sectors, especially healthcare. Before being widely used, cloud computing should indeed be thoroughly assessed, like any other technical advance. Many researchers and clinicians are interested in the availability of large, quickly available, and reconfigurable resources including virtual systems, platforms, and applications with minimal service costs. This study gives a thorough analysis of academic literature on cloud computing in the healthcare industry. To propose a categorization methodology with five different categories — Cloud-based framework development in healthcare, virtual machine placement in healthcare, cloud-based Green healthcare, security in cloud-based healthcare, and broker development in healthcare. The authors reviewed 227 articles before narrowing them down to 40. At the end some future research prospects have been highlighted.