Medisave can be used for a bunion correction, as it is a medical indication. It is not a cosmetic operation. It depends on how much work is needed, whether one foot or both feet are done.
It also depends on whether how many toes in total are done, or whether there are any other adjunct procedures.
Sometimes some patients do require more than just the bunion to be corrected. Government subsidies are only available in a restructured hospital, and the amount of subsidy depends on whether you are a private (class A/ B1) or subsidized patient (class B2/C).
The final amount of Medisave utilization thus varies, but I would definitely say that it can be utilized.