Hospital Management Information Systems (HIS) play a crucial role in improving healthcare service efficiency by integrating various hospital operations through information technology. This mini literature review explores the implementation of HIS in enhancing hospital efficiency, focusing on areas such as business process management, service automation, cost reduction, and hospital performance improvement. The study highlights how HIS can minimize healthcare service complexity by optimizing organizational efficiency through innovative information system development. Key findings indicate that HIS contributes to human resource development, organizational growth, and technological quality improvement, ultimately achieving efficient healthcare services. Challenges in HIS implementation include high initial costs, technical complexity, and a lack of computer skills among users. Despite these challenges, HIS has been shown to improve access to information, increase the productivity of healthcare professionals, and enhance patient safety and satisfaction. The review also emphasizes the importance of continuous evaluation of HIS implementation to ensure effective system performance and to address the complexities of healthcare services. Overall, HIS is a vital tool for modern healthcare institutions aiming to achieve operational efficiency and optimal patient care.Hospital Management Information Systems (HIS) play a crucial role in improving healthcare service efficiency by integrating various hospital operations through information technology. This mini literature review explores the implementation of HIS in enhancing hospital efficiency, focusing on areas such as business process management, service automation, cost reduction, and hospital performance improvement. The study highlights how HIS can minimize healthcare service complexity by optimizing organizational efficiency through innovative information system development. Key findings indicate that HIS contributes to human resource development, organizational growth, and technological quality improvement, ultimately achieving efficient healthcare services. Challenges in HIS implementation include high initial costs, technical complexity, and a lack of computer skills among users. Despite these challenges, HIS has been shown to improve access to information, increase the productivity of healthcare professionals, and enhance patient safety and satisfaction. The review also emphasizes the importance of continuous evaluation of HIS implementation to ensure effective system performance and to address the complexities of healthcare services. Overall, HIS is a vital tool for modern healthcare institutions aiming to achieve operational efficiency and optimal patient care.