KKH appointment bill

Can I request to pay my bill via medisave? (for the monthly appointments, etc consultations, ultrasounds) I have an outstanding of SGD 400+ Wondering if it can be deducted via medisave bfr my delivery? And how do I go about? Got called up to the counter at every appt bcs of my outstanding but have yet to enquire further on medisave. Anyone experience this before? Mind sharing first? Thanks in advance!