The claim that half of ER visits are unnecessary is not what federal data shows. Here is where to go by symptom, what EMTALA really guarantees, and the ambulance bill surprise-billing law does not cover.

You have read that up to half of emergency room visits are unnecessary. The federal data does not say that.

In the CDC’s National Hospital Ambulatory Medical Care Survey for 2022, the most recent emergency department release, triage nurses classified 1.8 percent of visits as nonurgent. The honest caveat is that the acuity data is imperfect: 25.8 percent of visits had unknown or blank acuity and a further 8.8 percent had no triage performed. So 1.8 percent is not a clean measurement either. But it is nowhere near half.

The figure people are half-remembering comes from a 2010 Health Affairs study by Weinick and colleagues at RAND, using 2006 data, which estimated that 27.1 percent of emergency visits could theoretically have been managed at a retail clinic or urgent care centre, and that only 16.8 percent could have been during the hours those alternatives are typically open. That is an estimate of substitutability from twenty years ago, not a finding that a quarter of visits were unnecessary. The Department of Health and Human Services, in a 2021 report on emergency department utilisation trends, explicitly declined to draw a line between emergency and non-emergency use at all.

Urgent Care vs. ER vs. Telehealth: Where to Go When

This matters because the guilt attached to that statistic makes people hesitate, and hesitation is the expensive failure mode in this decision, not a wasted copay.

What the emergency department actually looks like

From the same 2022 survey: 155.4 million emergency department visits, a rate of 47.3 per 100 people. Acuity broke down as 1.0 percent immediate, 10.1 percent emergent, 33.1 percent urgent and 19.4 percent semi-urgent.

Waiting is shorter than reputation suggests, at least to first contact: the median wait to see a physician, nurse practitioner or physician assistant was 16.0 minutes, with a mean of 38.1 minutes. The mean being more than twice the median tells you the distribution has a long tail, which is the experience people remember.

For comparison, the CDC found that 29.2 percent of US adults had visited an urgent care centre or retail health clinic in the previous 12 months in 2019.

Where to go, by symptom

This table combines the CDC’s emergency symptom lists and the National Library of Medicine’s MedlinePlus guidance on when to use the emergency room. The arrangement is ours; every entry comes from one of those sources:

Setting Use it for
Call 911 Choking; stopped breathing; head injury with loss of consciousness, fainting or confusion; neck or spine injury with neurological changes; electric shock or lightning strike; severe burn; severe chest pain or pressure; severe shortness of breath; seizure lasting over a minute or with delayed awakening; sudden inability to speak, see, walk or move; sudden weakness or drooping on one side
Emergency department Trouble breathing; fainting; pain in the arm or jaw; sudden severe headache; persistent dizziness or weakness; smoke or poison inhalation; sudden confusion; heavy bleeding; possible displaced broken bone; deep wound; coughing or vomiting blood; severe pain anywhere; severe allergic reaction with swelling or trouble breathing; high fever with headache and stiff neck; uncontrolled vomiting or diarrhoea; poisoning or overdose
Urgent care Colds, flu, earaches, sore throats, migraines, low-grade fevers, limited rashes; sprains, back pain, minor cuts and burns, minor broken bones, minor eye injuries
Telehealth Assessment when you are unsure, prescription questions, follow-up, conditions you have had before and recognise, and triage advice about which of the rows above applies

The decision rule underneath it: the top row is about transport, not just destination. The CDC is explicit for stroke: do not drive to the hospital or let someone else drive you, call 911, so that medical personnel can begin life-saving treatment on the way. An ambulance is not a more expensive taxi to the same building; it is the start of treatment.

The two symptom patterns worth memorising

For stroke, the CDC uses B.E. F.A.S.T.: Balance, meaning sudden loss of balance or dizziness; Eyes, meaning sudden trouble seeing; Face, asking the person to smile and checking whether one side droops; Arms, asking them to raise both and seeing if one drifts down; Speech, asking them to repeat a simple phrase and listening for slurring; and Time, meaning call 911 immediately. The CDC adds a detail that changes treatment options: note the time symptoms first appeared, because that determines what can be done.

For heart attack, the CDC’s listed signs are chest pain or discomfort in the centre or left side lasting more than a few minutes; feeling weak, light-headed or faint, possibly with cold sweats; pain or discomfort in the jaw, neck or back; pain in one or both arms or shoulders; and shortness of breath, which may come before any chest discomfort. Other symptoms include unusual or unexplained tiredness and nausea or vomiting, and the CDC states plainly that women are more likely to have those other symptoms.

What EMTALA does, and the thing it does not do

The Emergency Medical Treatment and Labor Act, enacted in 1986, applies to Medicare-participating hospitals that offer emergency services. It requires three things: a medical screening examination when someone requests emergency evaluation; stabilising treatment for anyone found to have an emergency medical condition; and an appropriate transfer if the hospital cannot stabilise the patient within its capability. All of it applies regardless of ability to pay.

Here is the misunderstanding worth correcting. EMTALA is an anti-dumping law that requires screening and stabilisation. It is not a right to free care. It does not require treatment beyond stabilisation, it does not cover routine or ongoing care, and it does not waive the bill. You can be screened, stabilised, and then billed in full for everything you received.

Your billing protections, and the hole in them

The No Surprises Act took effect on 1 January 2022 and does a great deal. It prohibits surprise balance billing for most emergency services, including the screening exam, stabilisation treatment and post-stabilisation services. It extends the same protection to out-of-network providers treating you at an in-network facility, unless you sign a notice-and-consent form waiving it, and that waiver cannot even be requested for emergency services or for certain ancillary providers including anaesthesiology, radiology, pathology and neonatology. Your cost sharing cannot exceed what it would be in network, and it counts toward your in-network deductible and out-of-pocket maximum.

The protection rests on the prudent layperson standard, which defines an emergency by how the situation would appear to someone with typical knowledge of health and medicine, experiencing symptoms so severe they believe they need immediate care. The consequence is important: the standard is based on your symptoms at presentation, not the final diagnosis. A plan cannot retroactively deny emergency coverage because the chest pain turned out to be indigestion.

Now the gap. Ground ambulance services are generally not covered by the No Surprises Act protections, unless a state law says otherwise. Air ambulance is covered. Ground is not. So you can be protected from balance billing for the entire emergency department visit and still receive a large out-of-network bill for the ride that took you there. That is the single most under-reported fact in this subject, and it does not change the advice above, because a stroke or heart attack still warrants the ambulance. It just means the bill may arrive and is worth appealing.

Telehealth, and a date worth writing down

Telemedicine use peaked and then fell. The CDC found 37.0 percent of adults used telemedicine in 2021, dropping to 30.1 percent in 2022.

For anyone on Medicare, the coverage position has lurched repeatedly, and this is the current state: Medicare.gov states that through 31 December 2027, Medicare covers telehealth services you can get from anywhere in the United States, including your home. That extension came from the Consolidated Appropriations Act for Fiscal Year 2026, signed in February 2026. It removes the old geographic restrictions, allows the home as an originating site, covers audio-only telehealth, and delays the six-month in-person requirement for tele-mental health.

The history explains why the date matters. These flexibilities lapsed during the autumn 2025 government shutdown, were restored only through 30 January 2026 when it ended, and were then extended by two years. They have always ridden on must-pass spending bills rather than standalone legislation, so the end of 2027 is a real cliff and not a formality. Part B telehealth carries the usual 20 percent coinsurance after the deductible.

What it costs

Federal figures exist for emergency departments and, notably, do not exist for urgent care.

AHRQ’s analysis of 2021 data found 107.4 million treat-and-release emergency visits at a mean cost of 750 dollars, with routine discharges averaging 710 dollars and visits ending in transfer averaging 1,560 dollars. That brief covers only visits that did not end in admission to the same hospital. An earlier HHS report put the average emergency visit at 530 dollars in 2017, and stated that average care costs for approximately comparable conditions appear to be much higher in an emergency department, with some estimates as high as 10 to 12 times higher than an urgent clinic or physician office.

No federal agency publishes an average urgent care visit cost. The specific dollar comparisons you see between the two settings come from insurers and commercial websites, not from government data.

What to do, in order

  1. Learn B.E. F.A.S.T. and the heart attack list. These are the situations where the decision is made in seconds and where being wrong is irreversible.
  2. For those, call 911 rather than driving. Treatment starts in the ambulance and the timing note changes the options.
  3. Use telehealth as triage when you are unsure, which is the cheapest way to find out which row of the table you are in.
  4. Use urgent care for the minor-illness and minor-injury list, and check its hours before you need it.
  5. Do not let cost anxiety delay an emergency visit. The prudent layperson standard protects a decision made on symptoms, even when the diagnosis turns out to be benign.
  6. Expect a separate ambulance bill and appeal it, since federal surprise-billing protections generally do not reach ground transport.

The uncomfortable thing about this decision is that it asks a frightened person to perform triage on themselves, using judgment the system reserves for trained staff, and then bills them for getting it wrong in the expensive direction. The protections that exist are real but partial, and the one genuinely reliable rule is that the symptoms in the first two rows of that table are worth any amount of money you might turn out not to have needed to spend.

Where these figures come from

  • Centers for Disease Control and Prevention, National Center for Health Statistics, National Hospital Ambulatory Medical Care Survey 2022 Emergency Department Summary Tables
  • Centers for Disease Control and Prevention, Signs and Symptoms of Stroke, and About Heart Attack Symptoms, Risk, and Recovery
  • National Library of Medicine, MedlinePlus, When to use the emergency room, adult
  • Centers for Medicare and Medicaid Services, Emergency Medical Treatment and Labor Act, and No Surprises Act consumer protection guidance
  • Medicare.gov telehealth coverage guidance
  • Agency for Healthcare Research and Quality, HCUP Statistical Brief 311, Costs of Emergency Department Visits, 2021
  • HHS Office of the Assistant Secretary for Planning and Evaluation, Trends in the Utilization of Emergency Department Services, 2009 to 2018
  • National Center for Health Statistics data briefs on urgent care and telemedicine use
  • Weinick, Burns and Mehrotra, Health Affairs, 2010

General information, current as of September 2026, and not personalised medical advice. When in doubt about an emergency, call 911.

Frequently asked questions

What about children?

The same emergency red flags apply, with extra caution for infants: fever in a baby under three months, dehydration, labored breathing, or unusual drowsiness deserve immediate medical attention. Pediatric urgent care centers exist in many areas.

Can urgent care refer me to the ER?

Yes, and they do so whenever findings exceed their scope. Starting at urgent care for an ambiguous minor problem is reasonable; starting there for red-flag symptoms wastes critical time.

Is telehealth covered by insurance?

Most major insurers and Medicare cover many telehealth services, though details vary by plan and state. Check your plan's app or member line for its telehealth option, which is often the cheapest path.

Sources

  1. CDC, Stroke signs and symptoms
  2. CMS, Emergency and urgent care coverage
  3. HHS, Telehealth.HHS.gov patient resources

About the author

Answerunboxed Editorial

Answerunboxed is an independent consumer guide covering money, insurance, health, home, auto, technology and careers for readers in the United States. Every article is researched from primary sources — IRS publications, CDC and NIH guidance, NAIC filings, CFPB and FTC material — and links to the sources it relies on so you can check the work yourself. We are not licensed financial advisers, insurance agents, tax professionals or physicians, and nothing published here is personalised advice for your situation.