Congress created the 340B program in 1992 to help certain healthcare "safety-net providers" that serve many uninsured or vulnerable patients reduce outpatient prescription drug costs. The 340B program requires prescription drug manufacturers to provide discounts to specified federally-funded clinics and certain hospitals, otherwise known as "covered entities," as a condition of participation in the Medicaid program. Certain 340B covered entities, like disproportionate share hospitals (DSH), are under no obligation to pass these discounts to patients or reinvest profits from 340B into free or reduced costs care for low-income patients.