Major companies had faced mounting pressure to stop denying or stalling authorization of coverage for treatments and prescriptions.

Major companies had faced mounting pressure to stop denying or stalling authorization of coverage for treatments and prescriptions.

Insurers such as CVS and UnitedHealthcare will implement the changes across commercial, Medicare and Medicaid plans, benefiting 257 million Americans.

Major American insurers announced Monday that they have agreed to speed up and smooth out the processes involved with the reception and administration of health care by…