The state's requirements violate federal ERISA law and block key cost and quality control measures, the plaintiffs say.

Here's a collection of forecasts about what the future might hold for the plan sponsors and participants.

Judges have been wrestling with state efforts to regulate PBMs, what health plans have to cover, and disputes over medical bills.

One will make it easier for administrators to use birthdates on forms when Social Security numbers are missing.

Officials say they need more time to consider the 44,825 comments on the proposed regulations.

ERISA lets employers choose between federal and state oversight, and federal oversight is winning.

The median cost of kidney dialysis for a privately insured Colorado patient who kept the private coverage in place while going through a full year of kidney dialysis was $111,374, according to data published by a team of researchers led by Virginia Wang of Duke University.

A lawyer for the employers predicts that discovery will show that collusion between drugmakers and PBMs had a significant impact on his clients' costs.