Ethics in Patient Referrals Act, a U.S. federal law, the Stark Law, enacted in 1989, that prohibits referrals for Medicare and Medicaid patients by a physician to a clinical laboratory in which the physician has a financial interest. A 1994 amendment includes other services and equipment such as physical and occupational therapy; radiology and other diagnostic services; radiation therapy; parenteral and enteral nutrients, equipment, and supplies; and home health services.
