Belgium’s Hidden Hospital Bills: The Fee Supplement Trap
A 19-year-old patient named Wout was moved into a single hospital room, only to receive a bill of nearly 3,800 euros in physician fee supplements after surgery. His family says they were never properly warned of the cost — and the hospital eventually admitted the charges were wrongly applied. The case, reported by VRT NWS on 11 September, has reignited a long-running debate over ereloonsupplementen, the extra fees Belgian doctors may charge on top of officially agreed rates.
Wout’s story is not isolated. A second patient, Stef, was billed more than 3,000 euros in supplements after a day admission — despite being told at the desk that a single room would cost “a few hundred euros more.” “I had never even heard of ereloonsupplementen,” Stef told the VRT consumer programme WinWin. “I didn’t know they existed.”
What Are Ereloonsupplementen?
When a patient chooses a single room, Belgian doctors are permitted to charge a supplement above the legally agreed honorarium. These supplements are not reimbursed by statutory health insurance (the ziekenfonds or mutualité). The maximum supplement percentage is set by each hospital individually, and there is currently no cap on the absolute euro amount.
In a two-person or multi-person room, doctors may not charge supplements. The same rule applies when the patient did not request a single room — for instance, if the hospital assigns one for medical reasons or because no other rooms are available.
The financial difference is stark. According to the InterMutualistisch Agentschap (IMA), the average patient bill for a classic hospital admission was 2,778 euros in a single room in 2024, versus just 323 euros in a multi-person room — roughly eight times less.
A System Ripe for Surprises
The scale of the problem is growing. IMA data shows that patients were billed a total of 1.6 billion euros for hospital stays and day admissions in 2024. Physician fee supplements accounted for nearly half of that — 760 million euros, up 9.1% from 697 million euros in 2023. That increase outpaced growth in both health insurance intervention (+5.6%) and the statutory co-payment (+1.5%).
At nearly 105,000 hospital stays, patients faced bills exceeding 3,000 euros. For almost 7,500 stays, the bill topped 10,000 euros. Cost estimates are not routinely provided in all hospitals, and the maximum supplement percentage varies from 100% to 300% depending on the facility — leaving patients with little ability to predict their out-of-pocket share.
Consumer organisation Test Aankoop has highlighted the same data, noting that amounts differ strongly by hospital, specialisation, and even for similar procedures within the same hospital. Supplements tend to run especially high for anaesthetists, gynaecologists, and orthopaedic surgeons.
When the Information Duty Fails
At the heart of Wout’s case is a legal obligation that hospitals appear to be failing: the duty to inform.
“Such situations simply should not occur,” said Luc Van Gorp, chairman of the CM Gezondheidsfonds. “Doctors and hospitals have a duty to inform the patient. Everyone must be well informed in advance about the costs, and that information must be tailored to the patient. That is what the law says.”
Van Gorp was blunt about the confusion patients face. “The info desk of some hospitals resembles a Persian market. Rates and percentages are juggled in ways nobody understands. Honestly, I wouldn’t always understand it myself.”
Belgian law supports this view. As detailed by the legal knowledge base elfri.be, the Court of Cassation has ruled that hospitals cannot satisfy their information duty passively. A mere reference in a brochure to an info desk or website is not enough — the information must be provided proactively, before the intervention. Silence cannot be treated as consent to supplements when the patient was not properly informed.
Yet Wout’s family saw the admission papers only at discharge — and discovered they reportedly indicated a request for a two-person room, contradicting the single room he was given. The family filed a complaint, and the hospital corrected the invoice, but Annelies, Wout’s mother, described “a bitter feeling” over the poor communication.
A Long-Promised Reform
Minister of Public Health Frank Vandenbroucke (Vooruit) has pledged to cap supplements. As he told VRT NWS in 2025, the plan would limit supplements to 125% by 2028 for single-room admissions, and to 25% above tariff for ordinary consultations.
“Today hospitals charge an average supplement of 106% — lower than the 125% I propose as a maximum,” Vandenbroucke said. “But some hospitals dare to charge 300%. Those exaggerations must go.” He cited the disparity in childbirth costs: 700 euros in supplements at one hospital versus 2,200 euros at another.
The reform has drawn fierce opposition from doctors’ associations, which warn that lower supplements — partly transferred to hospitals — threaten hospital finances. Vandenbroucke counters that supplement transfers account for an average of just 1.15% of a hospital’s financing.
The Political Battle Lines
Criticism crosses party lines. Vlaams Belang MP Dominiek Sneppe has argued that the excesses are concentrated in Brussels and Walloon hospitals, where supplements can reach 300%, compared with 100-150% in Flanders. “Those excesses must go, as quickly as possible,” he said, while noting that the promised reform of hospital financing has yet to materialise. Test Aankoop goes further, calling for supplements to be capped at 100% in a first phase and eventually abolished altogether. It notes that although the maximum supplement percentage was frozen at hospital level in 2022, supplements have continued to rise regardless.
What Patients Can Do
For now, the burden of vigilance falls largely on patients. Consumer experts advise thinking about room choice before admission, reading the admission declaration carefully before signing, asking about the maximum supplement percentage, checking insurance coverage, and verifying the bill afterwards. Patients who believe they have been wrongly charged can dispute the bill first with the hospital and then through their ziekenfonds.
Only a hospitalisation insurance policy that specifically covers single-room supplements keeps the out-of-pocket share limited.
What to Watch
Wout’s corrected invoice is a small victory, but it underscores a broader gap between legal protection and everyday practice. As Belgium awaits Vandenbroucke’s reform — and the political fight it will require — the question remains whether patients will ever get, in Van Gorp’s words, the equivalent of a clear quote before the work begins. For now, the cost of a single room can still mean a bill no one saw coming.