CONCORD, N.H. — Health care coverage has begun for more than 10,000 New Hampshire residents who’ve signed up under the state’s newly expanded Medicaid program.

Enrollment opened July 1 for coverage that started taking effect Friday. Gov. Maggie Hassan says 10,405 have signed up so far, or about a fifth of the estimated 50,000 adults who are eligible.

Adults making up to 138 percent of the federal poverty limit are eligible for coverage either through the state’s managed care program for Medicaid or through a program that subsidizes existing employer coverage.

The plan lawmakers approved calls for using federal Medicaid funds to buy private health coverage for adults initially signed up for managed care.