This document discusses India's 3-tier referral system for healthcare and the nurse's role within it. It describes the levels from village to tertiary care and the purposes of referrals for early treatment, cost-effectiveness, and education. The referral process involves selecting cases based on severity, preparing documentation, informing the receiving unit, transporting the patient, and providing feedback. Nurses are responsible for communication, monitoring patients during transfer, collecting records, and properly handing off care. The system aims to efficiently direct patients to the appropriate level of specialized treatment.