This U.S. industry comprises establishments primarily engaged in providing ambulatory health care services (except offices of physicians, dentists, and other health practitioners; outpatient care centers; medical and diagnostic laboratories; home health care providers; ambulances; and blood and organ banks). Illustrative Examples: Health screening services (except by offices of health practitioners) Physical fitness evaluation services (except by offices of health practitioners) Hearing testing services (except by offices of audiologists) Smoking cessation programs Pacemaker monitoring services Cross-References.