High Quality Content by WIKIPEDIA articles! The Code of Canons of the Eastern Churches (CCEO) is the title of the 1990 codification of the common portions of the Canon Law for the 22 of the 23 sui iuris Churches in the Catholic Church. The Roman or Latin rite Church is guided by its own particular Canons. The 22 sui iuris Churches which collectively make up the Eastern Catholic Churches have been invited by the Catholic Church to codify their own particular laws and submit them to the pope so that there may be a full, complete Code of all religious law within Catholicism.