Background: Age, hypertension, diabetes mellitus, obesity, cardiovascular illnesses, chronic obstructive pulmonary disease, and cancer are all associated with a higher risk of death from Coronavirus disease-19 (COVID-19). Patients with hyperglycemia on the COVID-19 have severe clinical issues, a higher rate of ICU admissions, mechanical ventilation, and a marked increase in inflammatory markers. The goal of therapeutic approaches should be to make it easier for patients to access the healthcare system. To lower the risk of problems and relieve the strain on healthcare systems, blood glucose control and comorbidities must be personalised. Studying the severity of COVID 19 infection in diabetic patients and serious outcomes, such as ICU admission and invasive ventilation, along with mortality rates, is the goal of this work. Diabetes is one of the most prevalent diseases.