That's not currently available under the Canada Health Act. It was during the first three years that the Canada Health Act was in effect from 1984 to 1987. The act was brought in specifically to eliminate patient charges, and provinces were given three years to do so because they recognized they would have to change their legislation and their governance regimes, but if they did so—and all the provinces that were not in compliance did so—they got the money back. Since 1987, we haven't had that ability to refund monies that have been withheld.
On May 8th, 2018. See this statement in context.