Utilize medical necessity criteria from established medical policies and clinical practice guidelines to render precertification determinations as described in the Medical Management UM work plan. This detailed clinical judgment includes evaluating whether the requested service is a covered benefit under the member's health plan, is medically appropriate for the member's clinical condition or whether the request requires referral to a Medical Director for potential denial of the request. The Nurse Reviewer must follow each line of business' requirements and each accredit