HCA is a company providing healthcare services. It operates acute care hospitals that offer medical and surgical services, including inpatient, intensive, and cardiac care, diagnostic, and emergency services. It also offers outpatient services, such as outpatient surgery, laboratory, radiology, respiratory therapy, cardiology, and physical therapy services. In addition, HCA operates psychiatric hospitals, which provide therapeutic programs comprising child, adolescent, and adult psychiatric care, and adolescent and adult alcohol and drug abuse treatment and counseling.