For many international self-pay patients, transferring the advance payment is the point at which a proposed treatment pathway becomes operational. Hospitals may then confirm or schedule the appointment and issue visa-support documents where applicable. The amount transferred is still not necessarily the final treatment price. German university hospitals publish processes in which treatment costs are monitored, additional payment may be requested if care becomes more complex, and any unused balance is settled only after the final invoice. There is no single public cancellation-and-refund rule that applies to every hospital, so a postponement or cancellation before treatment should be handled in writing with the hospital's International Patient Office or case manager under the individual treatment contract and current hospital terms.
1. Payment can be linked to appointment confirmation
Heidelberg University Hospital states that it communicates the treatment appointment after the required payment has been credited, while LMU advises patients to make travel arrangements only once the appointment has been confirmed and payment made. UKE likewise describes prepayment before appointment scheduling and the embassy confirmation letter. This means the bank transfer, appointment and visa-support workflow may be connected, but the exact sequence is hospital-specific.
2. Keep the estimate, payment receipt and case number together
After transferring the advance amount, keep the complete financial trail. Heidelberg asks patients to quote their Medical International Office case number when discussing an inquiry because the case manager may need to consult the medical department, accounting department and patient file. Keep the estimate, transfer confirmation, hospital acknowledgement, treatment contract and any revised plan in one record.
- Cost estimate and its version/date
- Bank transfer or card-payment receipt
- Hospital case / reference number
- Appointment confirmation
- Treatment contract or supplemental agreement
- Any payment guarantee from an insurer or embassy
- Any later revised estimate or extra-payment request
3. The final bill can be higher or lower than the prepayment
Mainz explains that a preliminary estimate can change because of an adapted treatment plan, secondary diagnoses, complications or a longer or shorter stay. LMU likewise states that the exact treatment price is only known after the stay. The prepayment is therefore financial security for expected care, not a promise that the final invoice will equal the estimate exactly.
4. Additional payment may be requested while treatment is ongoing
UKE explicitly lists monitoring of treatment costs during the stay and an additional claim if necessary. University Hospital Tübingen likewise states that a further payment demand can be issued if treatment becomes more complex than expected, for example because of complications or previously unknown additional conditions. Ask in advance who will contact you, how quickly payment is expected and whether treatment can continue while the financial question is being resolved.
5. An unused balance is normally settled after the final invoice
LMU states that overpayment is refunded after the final invoice. UKE's published workflow places the refund after discharge, incoming invoices and preparation of the final invoice. Tübingen says excess sums are transferred back after the final invoice has been calculated. Mainz likewise refunds excess payment after all accounts have been settled. The practical point is that refund is a final-settlement step, not necessarily an immediate transfer on the day of discharge.
6. Final settlement can take time
Mainz states that invoices from all departments involved are gathered by the international billing office after treatment and that it can take a few weeks before the final invoice and any applicable refund are available. Patients should therefore budget so that money tied up in the hospital advance is not needed immediately for travel home or other short-term expenses.
7. Refund account details matter
Heidelberg explains that refunds are generally returned to the account from which the original payment was made. If a third party paid on the patient's behalf, transferring a refund to another account can require proof of ownership, transfer confirmation, written declarations or a power of attorney. LMU also asks for valid bank-account or credit-card details before refunding an overpayment. Avoid unnecessary third-party transfers unless the hospital has confirmed how the money can later be returned.
8. Do not assume that cancellation before treatment automatically means a full refund
The public international-patient pages of major university hospitals describe advance payment, final settlement and overpayment refunds, but they do not establish one universal cancellation-refund schedule for all patients and all treatment contracts. If treatment is postponed, the patient decides not to travel, a visa is refused or the clinical plan changes before admission, contact the responsible International Patient Office immediately and ask what part of the payment remains refundable under the individual contract and whether any administrative or medical services have already been performed.
- Has the hospital already performed a medical review or consultation?
- Has an appointment been formally reserved?
- Has a treatment contract already taken effect?
- Are there hospital-specific cancellation or administrative charges?
- Will the existing advance be carried forward if the date is postponed?
- If a refund is due, which account will receive it and what documents are required?
9. A new insurer or embassy guarantee can change the settlement route
Heidelberg states that when a valid treatment guarantee from an accepted embassy or insurer arrives after the patient has already prepaid, the Medical International Office reviews whether the advance can be refunded immediately. This is not a universal rule for every payer or hospital, but it shows why patients should notify the hospital promptly if the funding arrangement changes after payment.
10. Ask for written confirmation before changing travel plans
If a treatment date moves or is cancelled, separate the medical question from the financial question. Ask the clinical team or case manager to confirm the new medical plan and ask the International Patient Office to confirm the financial status of the advance in writing. Do not infer refund rights from a verbal conversation, and do not book replacement flights or accommodation until the updated appointment and payment position are sufficiently clear.
- Is the treatment still medically planned?
- What is the new appointment or admission date?
- Does the existing advance remain valid?
- Is an additional payment required?
- Is any part of the advance refundable now?
- When will the final or interim financial statement be issued?
- Does the hospital need new bank details or proof of the original transfer?
- Does the visa-support letter need to be reissued?
Official sources
Last source-reviewed 2026-08-29. Administrative, insurance, reimbursement, billing and visa rules can change. Follow current official instructions before acting.
- FAQ – advance payment, final bill and overpayment refund — LMU Klinikum International Patient Office ↗
- Visa and travel preparations – appointment and payment sequence — LMU Klinikum International Patient Office ↗
- International-patient process – prepayment, extra claims, final invoice and refund — University Medical Center Hamburg-Eppendorf (UKE) ↗
- Patients from abroad – advance payment, extra payment and excess refund — University Hospital Tübingen ↗
- FAQ – appointment after payment, refunds and third-party accounts — Heidelberg University Hospital ↗
- Finance – preliminary estimates, final invoice and refund timing — University Medical Center Mainz ↗
- International treatment checklist – final invoice, excess refund and additional payment — University Medical Center Mainz ↗