Electronic medical records (EMR) are the digital form of the most crucial, sensitive and private healthcare data. The EMR contains both medical and clinical data related to patients. The EMR data is stored to access over the network for multiple stakeholders such as service providers, researchers, vendors, payers, pharmacies, and patients’ families, etc. The sharing of EMR records is one of the significant and sensitive portions of the healthcare system to improve the patient’s health. The current sharing method of the EMR system is in infancy or insufficient due to centralized storage or proprietorship. This arises the issues and challenges of security, privacy, and interoperability of EMR. The foundation of digital currencies like Bitcoin based on Blockchain is one of the most cutting-edge technologies currently available. The decentralized, immutable, shareable, transparent, and secure record management system provided by Blockchain technology may provide for allowing EMR data to be distributed among various parties without violating security and privacy. So, this paper reviews the blockchain-based solutions for managing and sharing the EMR data. First, we highlight the major issues that are being met by different stakeholders in the healthcare sector. Secondly, we explore the features and opportunities of this technology that can be used to resolve these highlighted issues. Thirdly, the blockchain- based applications need to be identified that have been developed for the EMR healthcare sectors.

Keywords : EMR Issues, Blockchain, EMR Blockchain, Systematic literature reviews, Information and Privacy Issues, Information Violations, Privacy Violations, Sharing of Information.