The document discusses referral systems in healthcare. It defines referral as transferring patient care responsibilities from one healthcare professional to another. A good referral system maintains continuity of care as patients move from community to primary to hospital care. The referral process involves communicating relevant patient information between referring and receiving providers. There are various levels and types of referrals depending on factors like a patient's condition and a facility's capabilities. An effective referral system ensures patients receive the appropriate care in a well-coordinated manner across different care levels.