In recent times, we tend to witness the quickest transformation of digital-health-care from a conventional hospital-centric system to a distributed patient-centric system. In this context, the Internet-of-Medical-Things (IoMT) is a game changer. This review aims to examine the role of IoMT systems in improving the predictive precisions and on-time response management of non-communicable or chronic-diseases. Additionally, it offers insights into the utilization of IoMT technologies and their impacts on the management of different chronic-diseases. The analysis highlights diverse approaches within IoMT frameworks, ranging from sensor integration to advanced Point-of-Care Testing (POCT) and wearable devices, elucidating their roles in improving health-care delivery for chronic-disease management. The findings extracted from this investigation lay the groundwork for forth-coming progressions in chronic-disease management within the IoMT sphere, underscoring its pivotal contribution to reshaping health-care delivery in managing chronic condition and enhancing patient outcomes in this regard. A thorough on-line search across multiple repositories including PUBMED, Web-of-Science, and the IEEE-Digital-Library was conducted to identify publications relevant to chronic-disease management within the IoMT domain. This search yielded a total of 1936 articles. After careful screening, 144 articles met the eligibility for inclusion in the review. Additionally, relevant articles cited within the selected publications were also taken into consideration.