A healthcare spending surge looms in the new year, and Business Group on Health is helping employers understand it. The nonprofit found in a recent survey that large employers expect the cost to treat patients will jump nearly 8% next year before they make coverage changes to address it. That's the highest growth rate in a decade. Business Group on Health CEO Ellen Kelsay expects employers to react by being more selective about the care that people receive. They also will try to manage the use of expensive treatments for obesity and diabetes.