A new report shows that only four states provide adequate insurance coverage for addiction treatment.

In a finding that brings bad news as America struggles with an opioid epidemic, a new report shows that only four states provide adequate insurance coverage for addiction treatment.

“We are calling on states to ensure health plans cover the full range of effective addiction treatments and address the serious gaps identified in this report,” said report author Lindsey Vuolo. She is director of health law and policy at Center on Addiction, in New York City.

“Improving insurance coverage for addiction treatment is essential to resolving the opioid crisis,” Vuolo stressed.

In the report, the researchers analyzed addiction treatment benefits in health insurance plans sold across the United States in 2017.

The investigators found that more than half of states offered a plan that did not comply with the Affordable Care Act’s requirements to cover addiction treatment.

In addition, 20 percent of states offered a plan that violated a federal law that requires insurance plans to pay for addiction treatment the same way they cover treatment for other chronic diseases, like diabetes or cancer.

Only one state — Rhode Island — provided comprehensive coverage for addiction treatment in the two 2017 ACA plans reviewed. Three other states — California, Minnesota, and Oregon — offered at least one plan in 2017 that provided comprehensive coverage for addiction treatment, the researchers reported.