ST. PAUL — The board of Minnesota’s health insurance exchange agreed Wednesday to pay another $3.16 million to get more work from a consulting firm that’s helping to fix its troubled information technology system.

MNsure awarded a $4.95 million contract this spring to Deloitte Consulting LLP, making the company its new general contractor for assessing problems with its system plus project management work. The additional funds will pay for improvements to the MNsure website and other services before most consumers start using it again on Nov. 15.

“They are the right vendor,” Scott Leitz, MNsure’s chief executive officer, told the board.

Officials said the action doesn’t raise the overall price tag for MNsure because the funds are coming from $155 million in federal grants. Federal grants also paid for the original $4.95 million contract with Deloitte. Wednesday’s contract amendment doesn’t extend work beyond the original December 2014 end date, but it will keep more Deloitte specialists on site who already have experience assessing the system.

Minnesota is one of 14 states plus the District of Columbia to launch its own online marketplace for health insurance to implement the federal Affordable Care Act. The law requires almost all Americans to have coverage or pay a tax penalty.  Problems with MNsure and other state-run exchange websites have prompted a flurry of remedial work across the country this summer. Several states have turned to Deloitte for help.

MNsure has enrolled 275,324 Minnesotans in public and private health care plans since it launched last October.