Can. 1391
© Libreria Editrice Vaticana Source: vatican.va
The following are to be punished with the penalties mentioned in can. 1336 §§ 2-4, according to the gravity of the offence:
1° a person who composes a false public ecclesiastical document, or who changes, destroys, or conceals a genuine one, or who uses a false or altered one;
2° a person who in an ecclesiastical matter uses some other false or altered document;
3° a person who, in a public ecclesiastical document, asserts something false.
Read the whole title TITLE IVOffences Against Reputation and the Offence of Falsehood 1390–1391