 This paper presents a systematic review of ongoing research on the application of blockchain technology in healthcare, showing that while several use cases have been proposed, there is a lack of adequate prototype implementations and studies to assess their effectiveness. The review highlights the state-of-the-art in blockchain applications for healthcare, their limitations, and areas for future research, emphasizing the need for more research to better understand and evaluate the utility of blockchain in this industry. This article was authored by Cornelius C. Agbo, Kusai H. Mamoud, and J. Michael Eklund.