Short answer: Use urgent care for minor, non-life-threatening problems like sprains, minor cuts, or a fever; use the ER for true emergencies such as chest pain, trouble breathing, or severe bleeding. An ER visit usually costs several times more than urgent care.
Urgent care centers handle non-emergency conditions that still need same-day attention: minor fractures and sprains, small lacerations, ear or sinus infections, mild asthma, and similar issues. Emergency rooms are equipped for serious or life-threatening conditions, and they are the right choice for symptoms like chest pain, stroke signs, difficulty breathing, severe bleeding, or major injuries.
The cost difference is large. A typical urgent care visit might carry a copay of roughly $30 to $75, while an ER visit often carries a separate, much higher copay or coinsurance, frequently several hundred dollars, plus facility and physician charges. Under the Affordable Care Act, plans cannot require prior authorization for emergency care and must cover out-of-network emergency care at in-network cost-sharing levels.
If you are unsure and it is not a clear emergency, many plans offer a 24-hour nurse line or telehealth visit that can help you decide where to go. When a situation is or could be life-threatening, do not delay: call 911 or go to the nearest ER.