Who is responsible for ensuring regulatory compliance, medical necessity, length of stay, denials, ICD-10 codes, peer review, and utilization of healthcare services?

• A. Nurse supervisor
• B. Case manager
• C. Social worker
• D. Physician advisor

Answer: (D)

The driving idea is clinical leadership in utilization management and regulatory compliance. A physician advisor is the clinical authority who ensures that care meets medical necessity criteria, determines appropriate length of stay, and oversees how services are used and when denials may occur. This role provides the medical perspective in peer review, guides decisions on whether services are warranted, and aligns practices with regulatory requirements and evidence-based standards. While other team members contribute—nurses handle daily care operations, social workers focus on discharge planning, and coders assign ICD-10 codes—the physician advisor has the overarching clinical responsibility for medical necessity and utilization decisions. They also collaborate with coding and case management to ensure documentation supports the required codes and justifies the level of care.