Please re-launch the HealthHub app.
If the bill is still shown as outstanding or payment not deducted (if partial payment is made), please access and fill in the Payment Enquiry Form according to the Healthcare Cluster of the institution.
Payment Enquiry Form
National Healthcare Group: https://for.sg/asknhg
SingHealth Services: https://for.sg/askshs
National University Health System: https://for.sg/asknuhs