http://www.insure.com/health-insurance/emergency-rights.html
What you're not entitled to
If you're not experiencing an emergency, and you don't have medical insurance or the ability to pay, the hospital emergency room is not legally required to treat you. The hospital will most likely direct you to your own doctor or a community health clinic.
The patient-dumping law was passed to ensure people in distress get necessary medical attention. If you have health insurance coverage, the ultimate question of payment is between you and your insurance company. If you don't have health insurance, you will still be asked to make payment arrangements with the hospital.
Once your condition has stabilized, the hospital has the option of moving you to another facility.
According to the U.S. Department of Health and Human Services, the patient-dumping law also applies to HMOs that illegally demand pre-authorization for emergency room visits. Emergency room care cannot be delayed while a hospital tries to obtain insurance pre-authorization.