"failure to obtain in a managed care plan can result in denial of coverage, or a substantial reduction in the coverage normally provided."

Pre-authorization

Explanation:

Managed care plan is the plan that contains insurance about the medical facilities and health care that is provided to an individual by health care providers. This plan is provided to people at low costs through providers and the services of healthcare is also at low amount.

Pre-authorization is the prior approval that is provided by the health insurer that the particular medical services and care will be provided to the individual under the plan.

If this pre-certification is not obtained in managed care plan then this can lead to the reduction in plan's medical care coverage or no coverage at all in healthcare field.

51% were unhappy, i think .   ; )

answer; (trauma);