UnitedHealthcare sent you a surprise bill? Here’s what to do

Alex Chen
Alex Chen
June 18, 2026 · 1 min read

Summary: Under the federal No Surprises Act, you usually cannot be balance-billed for emergency or out-of-network care at an in-network facility — dispute the bill before paying.

Why UnitedHealthcare sent you a surprise bill

  • Out-of-network providers worked at an in-network facility (ER, anesthesiology, radiology).
  • An emergency where you had no choice of provider.
  • A billing or coding error inflated the patient-responsibility amount.

Step by step: what to do

  1. Do not pay yet — request a fully itemized bill from the provider.
  2. Call UnitedHealthcare at 1-866-414-1959 to confirm how the claim was processed and the in-network rate.
  3. Cite the No Surprises Act if you were balance-billed for protected care.
  4. File a written dispute through the appeal address on your denial letter or the myuhc.com member portal and ask for the bill to be reprocessed.
  5. Escalate to your state Department of Insurance (and the federal No Surprises Act) if the surprise bill is not corrected.

Common mistakes to avoid

  • Paying a surprise bill before disputing it.
  • Not getting an itemized bill to spot duplicate or upcoded charges.
  • Missing the 180 days from the date of the denial window to dispute.

What to say when you call UnitedHealthcare

  • I received a surprise out-of-network bill and I believe it’s protected under the No Surprises Act.
  • Please reprocess the claim at the in-network rate and send me the corrected explanation of benefits.

Know your rights

You have the right to a written explanation of any denial, to a full copy of your plan documents, and to appeal — first internally, then through an independent external review.

Regulator: your state Department of Insurance (and the federal No Surprises Act). If the internal appeal fails, request an external review and file a complaint with your state Department of Insurance.

Don’t sit through UnitedHealthcare’s phone menu

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Frequently asked questions

What is the No Surprises Act?

A federal law that protects you from most surprise out-of-network bills for emergency care and for care from out-of-network providers at in-network facilities.

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Karen AI is not affiliated with, endorsed by, or sponsored by UnitedHealthcare. All trademarks belong to their respective owners. This page is general information, not legal advice.