TrOOP and MOOP are two different measures of out-of-pocket (OOP) costs - and TrOOP and MOOP are not related, aside from both defining OOP costs - and your TrOOP does not count toward your MOOP.
T . . .
Cost-sharing refers to the portion of your Medicare Part D plan coverage or Medicare Advantage plan coverage that you pay (such as $30 to fill a brand name prescription or $20 to visit a doctor).
L . . .