This article examines the overview of the clinical and psychological methods used as auxiliary tools for diagnosing the current level of consciousness in patients with chronic disorders of consciousness, which helps to determine the rehabilitation potential (after initial examinations by specialists of the specialists of multidisciplinary rehabilitative team (MDRT) in this group of patients. The selection of diagnostic tools helps specialists most accurately assess the current level of consciousness and recovery dynamics of a patient with DoC from the moment of admission to a medical institution until discharge (in conditions of a short period of hospitalization). This review may be of interest to specialists working in the intensive care unit (ICU).