Billing goes wrong when it depends on people remembering the right rate, the right tax and the right approval every single time. The fix is to build those rules into the system so accuracy is the default.
1. Tariffs that apply themselves
When charges follow the tariff set for each patient category, the correct rate is used every time without anyone selecting it by hand. Billing stays consistent across every service.
2. Approvals that stay controlled
Discounts follow a role based approval flow, so a concession is only granted by someone authorised to give it. Nothing slips through informally.
3. A record of every change
When a line item changes or is removed, the reason is captured with it. Every adjustment carries a clear record of who made it and why.