Malignant neoplasms (ZNO) are one of the most urgent and complex medical and social problems of our time. Eating disorders in patients with ZNO are an important factor that significantly affects treatment outcomes and overall survival. The place of nutritional screening and its methodology should become an integral part of the protocols for the clinical treatment of ZNO using a chemotherapeutic approach. The inclusion of nutritional status screening in the state guarantee program for providing free medical care to patients with ESR will allow forming clinical and statistical groups and rates for the completed case of treatment of an ESR patient in need of nutritional support. The study presents methodological and clinical and economic approaches to the formation of a new clinical and statistical group (CSG) for patients with acute RESPIRATORY diseases who are being treated in a round - the-clock hospital. The analysis of European clinical recommendations on nutritional support for patients with acute respiratory INFECTIONS, analysis of the legal framework and methodological support for the formation of clinical and statistical groups within the framework of the state guarantees program for free medical care for Russian citizens from the budget of the MHI was carried out. The method of pharmaco-economic analysis was used to collect and analyze direct medical costs for the diagnosis, treatment and observation of a patient with a BPH who needs nutritional support, according to international clinical recommendations. The method of expert assessments in the formation of the average frequency of use and the average frequency of provision of various medical services according to the nomenclature of medical services adopted for use in the Russian Federation. It is proposed to include new classification criteria in the guidelines for the formation of CSG, such as" primary screening "to identify nutritional risk, consisting of only 4 questions, and" main screening", which allows to assess the severity of violations of the nutritional status by a point system. In the presented algorithm for forming the CSG, all types of medical services and drugs were calculated, which in the final calculation formed a tariff equal to 133 745.59 rubles for one completed case of treatment of a patient with a PHT who is on PCT and needs nutritional support.