Care New England, a Rhode Island hospital group, filed a lawsuit to block new health insurance rules designed to control hospital costs, the Providence Journal reports. The group, which oversees three hospitals, alleges that state health insurance commissioner Christopher Koller overstepped his legal authority when he ruled in July that health insurers' new contracts with hospitals should limit price increases. Koller has said that he wants to overturn the system that rewards repeated treatments and tests over good health. John Hynes, Care New England's president claims the lawsuit will help the group wrap up negotiations with a payer. "Although Koller's rules apply only to insurers, they are affecting negotiations with hospitals," the Journal reports. Article