WASHINGTON — The Obama administration plans on Monday to announce scores of new health insurance options to be offered to consumers around the country by the Blue Cross and Blue Shield Association and the United States Office of Personnel Management, the agency that arranges health benefits for federal employees, according to administration officials.

The options are part of a multistate insurance program that Congress authorized in 2010 to increase options for consumers shopping in the online insurance markets scheduled to open on Tuesday.

Congress conceived multistate plans as an alternative to a pure government-run insurance program — the “public option” championed by liberal Democrats and opposed by Republicans in 2009-10.

“The multistate program will help deliver choice and high-value health plans in the new marketplace, expanding quality, affordable options for uninsured Americans,” an administration official said.