Title IV. The Crime of Falsehood
Can. 1390 §1. A person who falsely denounces before an ecclesiastical superior a confessor for the delict mentioned in can. 1387 incurs a latae sententiae interdict and, if he is a cleric, also a suspension.
§2. A person who offers an ecclesiastical superior any other calumnious denunciation of a delict or who otherwise injures the good reputation of another can be punished with a just penalty, not excluding a censure.
§3. A calumniator can also be forced to make suitable reparation.
Can. 1391 The following can be punished with a just penalty according to the gravity of the delict:
1° a person who produces a false public ecclesiastical document, who changes, destroys, or conceals an authentic one, or who uses a false or altered one;
2° a person who uses another false or altered document in an ecclesiastical matter;
3° a person who asserts a falsehood in a public ecclesiastical document.