States must act to secure health law's consumer protections, study says

"Because states are expected to be the primary enforcers, most will need to implement the new protections so that they are reflected in state law or — at a minimum — give the insurance department the authority to enforce and write new rules," study authors wrote.

The market reforms include the law's ban on discrimination for preexisting health conditions and its requirement that plans cover certain essential health benefits.

According to the study, only Connecticut took action on all seven of the Affordable Care Act's market reforms. California addressed all but one, but did not require compliance from all health insurance plans, or in all markets.

Arkansas, Maine, Maryland, New York, Oregon, Rhode Island, Utah, Vermont and Washington were the other states that took some action.

Read more from the study here.