The governor says his administration is still in talks with the federal government over whether Indiana can use the Healthy Indiana Plan to expand Medicaid.
A recent Kaiser Health poll showed only 12 percent of the uninsured knew the exchanges were going online Monday.
Some legislators say they worry Indiana will miss out on the first year of federal funding for healthcare expansion.
House Ways and Means Chair Tim Brown says he will not advance a bill addressing implementation of the Affordable Care Act.
Governor Mike Pence says he is not pursuing healthcare expansion under the Affordable Care Act through the Medicaid program.