Traffic wardens plastered a kidney transplant patient's windscreen with 10 parking tickets.
The woman's car was parked in a hospital disabled bay with her blue badge displayed on the dashboard.
A note was also visible saying she was a patient at the transplant unit at the University Hospital of Wales in Cardiff.
She had gone in for treatment after her kidney swap but was kept in for emergency surgery and was unable to move her car from the short-stay bay.
Wardens then began to issue the 10 notices - each with a £30 fine - as the woman remained in hospital to recuperate.
A hospital visitor commented: "Have they considered the effect this is likely to have on someone who has just had a transplant?"
The woman patient, who has not been named, is still recovering in hospital.
Private firm Vinci Park UK said: "Our terms and conditions are clearly explained at ticketing machines.
"We can confirm the parking charge notices have been removed and we're working to resolve this issue."