What PCS code would be assigned for a liver transplant using a portion of a living donor's liver?

A wound where tissue is not just separated but torn away from the body is referred to as:

a. Laceration b. Avulsion c. Abrasion d. Gangrene

Which of the following rarely if ever recurs?

a. Calcifying odontogenic cyst b. Ameloblastoma c. Odontogenic myxoma d. Odontogenic keratocyst e. Adenomatoid odontogenic tumor