Code of Canons of the Eastern Churches

The Code of Canons of the Eastern Churches (Latin: Codex Canonum Ecclesiarum Orientalium, abbreviated CCEO) is the title of the 1990 codification of the common portions of the Canon Law for the 23 of the 24 sui iuris Churches in the Catholic Church. It is divided into 30 titles and has a total of 1540 canons.

The Latin Church is guided by its own particular Canons. The 23 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.

Pope John Paul II promulgated Code of Canons of the Eastern Churches on October 18, 1990, by the document Sacri Canones. The Code came into force of law on October 1, 1991.

In 1998, Pope John Paul II issued the motu proprio Ad Tuendam Fidem, which amended two canons (750 and 1371) of the 1983 Code of Canon Law and two canons (598 and 1436) of the Code of Canons of the Eastern Churches, so as to add "new norms which expressly impose the obligation of upholding truths proposed in a definitive way by the Magisterium of the Church, and which also establish related canonical sanctions."

The text of the CCEO is divided into 31 sections, 30 titles and a section of preliminary canons.

The 6 preliminary canons deal with scope and continuity, what is affected by the CCEO and how prior legislation and customs shall be handled.

Can. 1 The CCEO regards solely the Eastern Catholic Churches unless otherwise mentioned.

Can. 2 The CCEO is to be assessed according to the Ancient Laws of the Eastern Churches.

Can. 3 The CCEO does not legislate on liturgical matters and therefore the Liturgical Books are to be observed unless contrary to the Canons of the CCEO.

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