Slacks implies pants of certain materials which are not part of a suit (jeans are not slacks, and you would not refer to the pair of trousers that came with a suit as slacks.) It is also more common to use slacks to refer to pants worn by women, while men would wear trousers.
Health care safety net providers are those that have a legal mandate or mission to offer medical care to all patients, regardless of their ability to pay, and have a substantial number of patients who are uninsured or on Medicaid.
1 Some providers will negotiate a discount of up to 20% or more for uninsured patients who pay cash or pay within a certain timeframe. 2  For example, Lincoln County Ambulance Service in Kansas offers a 20% discount for payment within 30 days and a 10% discount to uninsured patients.