World and Nation
Technology hampers opening of exchange
Trading on the nation’s largest options exchange was delayed for several hours on Thursday because of computer problems, the latest incident to highlight the vulnerability of markets to technological shocks.
World and Nation
Administration warns hospitals on Medicare billing
Saying there are “troubling signs” of abuse in the way hospitals use electronic records to bill for Medicare and Medicaid reimbursement, the administration of President Barack Obama warned in a letter to hospital associations Monday that it would not tolerate what it called attempts to “game the system” and vowed to vigorously prosecute doctors and hospitals implicated in fraud.