Polish literature on law and forensic pathology abounds with opinions that the Regulation of the Minister of Justice and of the Minister of Internal Affairs Concerning the Performance of Medico-Legal Autopsy of 15 July 15, 1929, continues to remain in force. The authors thoroughly analyse the provisions of the Criminal Procedure Code of 19 April, 1969 and the Act on Enactment of the Provisions of the Criminal Procedure Code of 19 April, 1969. The results of semiotic and systematic interpretations of the aforementioned acts leave no doubt that the regulation of 1929 has been derogated. Nonetheless, the authors stress that, despite the lack of legal force, the regulation of the interwar years can still be considered a useful guide for less experienced doctors who perform medico-legal autopsies on an ad hoc basis.