BlueCross BlueShield of Tennessee – the state's dominant health insurance provider – is asking to raise rates by an average of 19 percent for its exchange plans in 2015, according to documents filed with the state of Tennessee.

Meanwhile, Cigna is requesting an average rate increase of 7.5 percent in 2015, while Kentucky-based Humana would like to boost marketplace rates by an average of 14.4 percent.

In the documents filed with the state, all three insurance companies cited the morbidity of the people who purchased Marketplace plans as a factor in the rate increase. In other words, people who bought health insurance on the federal exchange tended to be sicker than the companies originally projected.

Consumers will face increases ranging between 6.1 percent and 21.7 percent if he or she has a BlueCross plan, the company said in the filing, and the increases will depend on which product is chosen.