The existence of a code of professional ethics is very important in order to keep advocates in practice or law does not come out of the values of the profession. The code of ethics is also needed to maintain that advocates serve the interests of the community and maintain the trust that has been given by the community to the community. The purpose of this study to determine the classification of criminal acts obstruction of justice in Decision No. 3315 K/Pid.Sus/2018. The act of the defendant who contacted and met with Doctor Bimanesh Sutarjo to ask for help so that his client could be hospitalized at the Medika Permata Hijau hospital with a diagnosis of several diseases, one of which was hypertension", with the aim of avoiding the KPK investigation was not an act carried out in connection with his professional duties, and the act was clearly an act without being based on good faith so that it was an act that could be classified as an act of obstruction of justice in decision 3315 K/Pid.Sus/2018