A boost in federal Medicaid funding that would reverse $370 million in severe health care cuts in Virginia is in jeopardy, a state government group is warning, prompting anxiety among lawmakers who had viewed the infusion as a near-certainty.

The bill that carries the $25 billion extension of the stimulus’ Medicaid benefits — while approved in both the U.S. House and Senate — has been bogged down by the need to match the new spending with offsetting cuts, said Michael Bird, federal affairs counsel for the National Conference of State Legislatures.