Catechism of the Catholic Church §1510 — excerpt
However, the apostolic Church has its own rite for the sick, attested to by St. James: "Is any among you sick? Let him call for the elders [presbyters] of the Church and let them pray over him, anointing him with oil in the name of…
This translation is under copyright, so only the cited words are quoted here. Follow the link for the full text. Translation: English translation of the Catechism of the Catholic Church, 2nd ed. (Libreria Editrice Vaticana), as posted at vatican.va.
Also cites: Council of Constantinople II (553) DS 216 · Council of Florence (1439) 1324- 1325 · Council of Trent (1551) 1695-1696 · 1716-1717