SECTION9. PRESCRIPTIONDRUGBENEFITS Genericdrugs Drugsthatarenolongercoveredbypatentprotectionandthusmaybeproducedand/ordistributedby multipledrugcompanies. Preferreddrugs Drugsincludedonaformularyorpreferreddruglist;forexample,abrand-namedrugwithoutageneric substitute. Non-preferreddrugs Drugsnotincludedonaformularyorpreferreddruglist;forexample,abrand-namedrugwitha genericsubstitute. Fourth-tierdrugs Newtypesofcost-sharingarrangementsthattypicallybuildadditionallayersofhighercopaymentsor coinsuranceforspecificallyidentifiedtypesofdrugs,suchaslifestyledrugsorbiologics. Specialtydrugs Specialtydrugssuchasbiologicaldrugsarehighcostdrugsthatmaybeusedtotreatchronicconditions The Kaiser Family Foundation and Health Research & Educational Trust / Page 160