Medicare Advantage insurers have been accused of inflating reimbursements by reporting false diagnoses to the government. The Wall Street Journal uncovered cases where patients already treated surgically for diabetic cataracts or reportedly HIV-positive but without necessary treatments were still being declared with those conditions. Insurers sent nurses to patients' homes to find supportive diagnoses if a doctor's assessment fell short. They often persuaded veterans to switch to their plans, even though VA care was better. UnitedHealth, a notable offender, was found to increase diagnosed illnesses by 55% on paper for new enrollees. This practice raised government costs but led many patients, especially those nearing end of life, to return to traditional Medicare, saving Medicare Advantage $10 billion in costs.