Introduction: Use scoring systems facilitates and enables decision making about the appropriate therapeutic treatment (right evaluation and classification of the patient group at high risk), which can also increase the likelihood of survival rationalize a decision on the need and intensity of therapy. Aims: To analyze the Pediatric Logistics Organ Dysfunction Scoring system (PELOD) and Pediatric Risk Score of Mortality (PRISM), in the surgical intensive care unit (ICU) of tertiary pediatric medical facility. Methods: The study included a 90 patients aged 0-18 years, in the period of three years. To analyze parameters of the PELOD and PRISM score. In the analysis were used statistical data about predictors of mortality: Receiver Operating Characteristics (ROC) curve and Hosmer-Lemeshow goodness of fit test (HL-GOF). Results: The mean value of PRISM score in the group of patients with favorable outcome of treatment was 8 and with lethal outcome 18. The mean value of PELOD score in the group of patients with favorable outcome of treatment was 7.7 and with lethal outcome 17.7. The area under the ROC curve for the PRISM score was 0.8306, for the PELOD score it was 0.7967. Calibration values expressed in HL-GOF for PRISM score were 2.913,while the PELOD score they were 0.60971). Conclusion: Initial assessment, daily monitoring and reliable prediction of the final outcome of the application of pediatric scoring systems allow rising efficiency and rationalization of work in an intensive care unit.