Final answer:
Only the annual PDP deductible, drug manufacturer's discount for brand name drugs after the initial coverage period, and off-formulary drugs prescribed but denied by the plan count toward reaching the catastrophic coverage phase.
Step-by-step explanation:
The expenses that count toward reaching the catastrophic coverage phase in Mrs. Cantwell's prescription drug plan are:
- Only her annual PDP deductible: This is the amount she needs to pay out-of-pocket before her insurance starts covering the rest of the drug costs.
- Drug manufacturer's discount for brand name drugs after the initial coverage period: This discount helps lower the costs of brand name drugs, making it easier for Mrs. Cantwell to reach the catastrophic coverage phase.
- Off-formulary drugs prescribed but denied by the plan: Although they are denied by the plan, the costs of these drugs count towards the catastrophic coverage phase.