I just found the below information. sharing with you https://www.kkh.com.sg/patient-care/areas-of-care/womens-services/Pages/Giving-birth-at-KKH/MediSave-Maternity-Package-Claims.aspx
Mine was given back through cash cheque because I had hospital insurance to cover all expenses due to my post-delivery complications. Most moms will receive through Medisave.