Reduction in patient liability due to payments by other payers (PLRO)
This is the amount of any payment by other third-party payers that reduces the beneficiary's liability for the PDE but does not count towards Part D's true out-of-pocket (TrOOP) requirement. Examples include payments by group health plans, worker's compensation, and governmental programs like the Veterans Administration and TRICARE.
This variable comes directly from the original PDE.
Some additional information on this variable: