Guide provided by http://www.dmhc.ca.gov/ Link here
Emergency and Urgent Care and California medical insurance
California Heath plans must cover emergency care, even if you do not go to a hospital in your plan's network. Any emergency room must treat you until you are well enough to be moved to a hospital in your medical plan's network. Your plan must also cover emergency care when you travel outside of your plan's service area.
What Is an Emergency?
The law says that it is an emergency if you reasonably believe that it is an emergency. It is an emergency if waiting to get care could be dangerous to your life or a part of your body. A bad injury or a sudden serious illness can be an emergency. Severe pain and active labor are also emergencies. Your California medical plan must cover emergency care no matter where you are and what hospital you go to. However, you may be moved to a hospital in your medical plan's network when you are stable enough to be moved.
What Is Urgent Care?
Urgent care is care you need within 24 to 48 hours. Your medical plan must cover urgent care when you travel outside your plan's service area. If you are within your plan's service area, you must use doctors in the network for urgent care.
Be Prepared Ahead of Time