Diabetes mellitus is a chronic metabolic disorder which is obtained by absolute or relative insulin deficiency and impaired insulin function. Uncontrolled Diabetes Mellitus can lead to various complications; one of them is macrovascular or microvascular which can be characterized by increasing the blood pressure (hypertension). This study aims to look at the differences of hypertension in the case of controlled and uncontrolled Diabetes Mellitus Type 2 in Pirngadi General Hospital Medan. The type of this research is observational with cross sectional approach. Samples are 42 people. They are taken from medical records and the results will be analyzed by doing univariate and bivariate. The results showed there is a difference between the incidence of hypertension in diabetes mellitus type 2 cases are controlled and uncontrolled in Pirngadi General Hospital Medan Year 2015 where p = 0.0001. Hopefully this research is useful for the public and the health institutions and also for the further researcher

Keywords : Diabetes Mellitus, Hypertension, RSUD Pirngadi