To thrive as a Per Diem Utilization Review Nurse, you need a valid RN license, strong clinical knowledge, and experience with patient case review for medical necessity. Familiarity with utilization management software, electronic health records (EHRs), and knowledge of CMS or insurance guidelines are commonly required. Excellent critical thinking, attention to detail, communication, and time management skills help you excel in a flexible, collaborative environment. These abilities are crucial to ensure compliance, improve patient outcomes, and efficiently manage healthcare resources.