This book provides readers with a comprehensive understanding of the basic structures and operations of one of the largest sectors of the U.S. economy. With the most current data, legislation, and overall system changes addressed, the third edition covers the conceptual basis for the system, its historical origins, the structures of ambulatory care, inpatient care, and other important services structures, the translation of these structures into health services themselves, and the manifestations of their impact on costs and quality. The text includes learning objectives, review questions, and key terminology.