U.S. prescription spending rose 12% to nearly $425 billion in 2015,... Health insurer Cigna Corp. will get extra price discounts from drugmakers if new cholesterol medications don’t help patients as much as expected, a significant step in a broader push to tie the cost of drugs to how well they work. Such “value-based” deals are becoming more common as rising costs spur customers to demand assurances they are getting what they pay for.

Source: Wall Street Journal May 10, 2016 22:26 UTC