Introduction Evaluation of short stature is a challenge for pediatricians and in the process, idiopathic short stature (ISS) is an often diagnosis of exclusion. Non-pathogenetic mutations affecting height may present with phenotypes similar to the pathogenetic mutations. In this study, we aim to identify the underlying genetic cause of short stature in patients diagnosed with ISS and investigate potential treatments for them. Materials and Methods We identified 14 children in our practice who were under the age of 15 and were initially labelled as ISS. Then, we evaluated their plasma whole-exome sequencing (WES). Results Out of the 14 patients assessed with WES, five had normal results and correctly diagnosed with ISS. However, four of them had rare mutations that have not been extensively studied in the past. Due to the functions of these mutated genes and our patients’ phenotypes, we suspect that these mutations played a role in the short stature. Out of the remaining five patients, four had genetic mutations known to cause short stature and one had a mutation that was known not to affect height. Conclusion In patients who are initially diagnosed with ISS, WES can help to identify rare mutations that may play a role in short stature. Directing attention to these genes, may help with the correct diagnosis and choosing proper treatment for the patients.