FAQ

The copayment for Special-Case Retired Persons earning income at the same levels as active workers is 30%. However, those 70 and older with incomes below the base level may apply to have their copayments reduced to 20% starting the month after the month in which they turn 70.(Exception: Copayments will be reduced to 10% through March 31, 2014.)
You will be sent a letter to confirm your base income level early in the month in which you reach age 70. Check the details of that letter and apply for the reduced copayment if you qualify.