Introduction. Diabetes mellitus (DM) is a risk factor for the development of coronary heart disease, as well as a pathology that significantly complicates the prognosis of diseases of the cardiovascular system. To predict the course of ACS and stratify the risks of adverse cardiovascular complications, the Killip classification of acute heart failure is used, which has not yet lost its prognostic value. Purpose: to analyze the effect of type 2 diabetes on clinical outcomes and further prognosis after ACS, depending on the severity of the manifestations of acute renal failure according to the Killip classification, as well as to assess the financial burden of this nosology within the healthcare system. Materials and methods. The data of 246 patients were used, who were divided into groups depending on the presence of type 2 diabetes, who were monitored for 1 year after undergoing ACS. Adverse outcomes were recorded: death from any cause and repeated ACS, depending on the severity of the Killip OSN. The study group consisted of patients with type 2 diabetes, n=66 people; the comparison group consisted of patients without type 2 diabetes, n= 180 people. The average age of the patients was 64.05±11.69 years. Results. In patients with type 2 diabetes, adverse cardiovascular events were more often reported within 1 year, while those who suffered ACS with the severity of acute renal failure IV according to Killip showed a sharp increase in the number of reported deaths up to 6 months after ACS. An analysis of the cost of the disease showed that the cost of hospitalization of a patient with type 2 diabetes significantly exceeds the total cost of treating a patient in the absence of type 2 diabetes. Discussion. Patients with type 2 diabetes have a more unfavorable prognosis after undergoing ACS. The consequences of this event cause irreparable socio-economic damage, directly affecting the country's GDP. Attention is drawn to the time interval at which the greatest increase in deaths is noted. During this period, this cohort of patients needs stricter outpatient monitoring by supervising specialists. Conclusion. The use of the Killip classification in patients with ACS and type 2 diabetes makes it possible to predict adverse cardiovascular events in the future. The results of the statistical analysis indicate significant socio-economic damage from ACS, manifested in direct and indirect losses of healthcare resources.