Tennessee Code Title 68. Health, Safety and Environmental Protection § 68-11-262

(1) “Cost to charge ratio” means the ratio of a specific healthcare facility's total expenses to its grand total gross patient charges as reported in its joint annual report submitted annually to the department of health;

(2) “Healthcare facility” means a hospital, ambulatory surgery center, or outpatient diagnostic center; and

(3) “Uninsured patient” means a person with no public or private source of payment for medical services, including, but not limited to, medicare, TennCare, a contract of insurance, an employer-sponsored health plan, or other enforceable obligation under which a person is responsible for payment for healthcare services provided to the patient.