By Darius Tahir, KFF Health News Central Oregon Pathology Consultants has been in business for nearly 60 years, offering molecular testing and other diagnostic services east of the Cascade Range. Beginning last winter, it operated for months without being paid, surviving on cash on hand, pra ctice manager Julie Tracewell said. The practice is caught up in the aftermath of one of the most significant digital attacks in American history: the February hack of payments manager Change Healthcare. COPC recently learned Change has started processing some of the outstanding claims, which numbered roughly 20,000 as of July, but Tracewell doesn’t know which ones, she said.