WASHINGTON (AP) — Findings from congressional investigators suggest Medicare patients aren’t being told enough of what they need to know and some of the weaknesses are deemed “critical.”

The nonpartisan Government Accountability Office says Medicare lacks clear procedures for getting useful information to consumers. Its investigation finds that federal government websites meant to give Medicare patients basic consumer tools instead fail to provide adequate information on out-of-pocket costs, and even quality of care.

The GAO report, obtained by The Associated Press before its public release, says a confusing layout, data gaps and lack of customized information make it virtually impossible for consumers to get the knowledge they need. The GAO says it won’t be fixed anytime soon, even as the federal government plans new websites on other forms of care.

The GAO says there’s a growing need for the information as health care costs rise.