Jose Luis Pelaez Inc | Digitalvision | Getty ImagesHealth-care inflation is fueling higher coverage costs, setting the stage for what could be the largest increase in health-care spending by large employers in 15 years.Medical care costs in August rose 4.2% on an annualized basis, according to the Labor Department's Consumer Price Index, compared to an overall inflation rate of 2.9%. The cost of doctors' visits climbed 3.5%, while hospital and outpatient services jumped 5.3%.Those price increases are contri ...