UnitedHealthcare denied your claim? Here’s what to do

What to gather first

• Your denial letter and the Explanation of Benefits (EOB), which state the exact reason.
• Your member ID, the claim number, and your plan documents (Evidence of Coverage / Summary of Benefits).
• The original bills and medical records for the service.
• A letter of medical necessity from your doctor (or notes you can ask them to provide).
• Dated notes from every call with UnitedHealthcare or your provider.

Why UnitedHealthcare denied your claim

• A coding or paperwork error by the provider (the most common cause).
• The service was billed as "not medically necessary" or experimental.
• Missing prior authorization or a referral.
• The claim was sent to the wrong plan or filed after the timely-filing window.
• An out-of-network provider where UnitedHealthcare expected in-network.

Calling UnitedHealthcare: what to expect

UnitedHealthcare’s line is 1-866-414-1959; member services is typically Mon–Fri, roughly 8am–8pm in your time zone; the number on your ID card may be staffed longer.

To reach a person: enter the member ID from your UnitedHealthcare card, then say "claims" for a denial or "prior authorization" for a pending request, then say "representative" if the automated assistant does not offer a person. Menus change — if yours does not match, say "representative" at any prompt.

Self-service runs through myuhc.com / UnitedHealthcare app (https://www.myuhc.com); the written route is the UnitedHealthcare member appeal (a written request to the appeals address on your EOB; myuhc.com also has an online appeal option for many plans); and you may see these names on your paperwork: myuhc.com, Optum Rx (pharmacy), Optum Behavioral Health.

Step by step: what to do

1. Read the denial letter and EOB for the exact denial code and reason — that is your roadmap.
2. Call UnitedHealthcare at 1-866-414-1959 (enter the member ID from your UnitedHealthcare card, then say "claims" for a denial or "prior authorization" for a pending request, then say "representative" if the automated assistant does not offer a person) and ask for the specific plan language the denial relies on.
3. Request a full copy of your plan documents and the claim file.
4. Ask the provider to correct any coding error and resubmit, if that is the cause.
5. Write an appeal letter with your name, member ID, and claim number; state plainly why it should be covered and attach your supporting records.
6. File the written internal appeal through the appeal address on your denial letter or the myuhc.com member portal before the 180 days from the date of the denial deadline (keep proof of the date sent).
7. If the internal appeal is denied, request an independent external review by a reviewer who does not work for UnitedHealthcare.

Common mistakes to avoid

• Treating the first phone "no" as final — denials must be appealed in writing.
• Missing the 180 days from the date of the denial appeal deadline.
• Appealing without citing the specific denial code and plan language.
• Not asking your doctor for a letter of medical necessity, which often decides the appeal.
• Stopping after the internal appeal instead of using your external-review right.

What to say when you call UnitedHealthcare

• I’m calling about a denied claim and I want to start a formal appeal.
• Please tell me the exact denial code and the plan provision it’s based on.
• I’m requesting a full copy of my plan documents and claim file.
• Please confirm the appeal deadline and the address or portal for my written appeal.

UnitedHealthcare-specific things to know

• UnitedHealthcare EOBs use short remark codes; myuhc.com spells them out under the claim, which is the phrase to use with the rep.
• A claim denied for "no authorization on file" is often fixable by the provider resubmitting with the auth number — ask which side needs to act.
• Pharmacy and behavioral-health decisions come from Optum, which has separate phone lines and appeal addresses — the letterhead tells you which one to call.
• myuhc.com shows claim status and the EOB, and many plans can submit an appeal there directly.
• UnitedHealthcare has a very large Medicare Advantage business; those members follow Medicare appeal rules and use the number on their Medicare plan card.
• Employer plans administered by UnitedHealthcare may be self-funded; the plan document (SPD) then controls what is covered.

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.

If UnitedHealthcare will not move, the escalation paths that carry weight:

• Ask for a second-level review; UnitedHealthcare offers one on most commercial plans.
• Request independent external review through your state or the federal external-review process.
• File with your state Department of Insurance, or the Department of Labor for employer plans.

Frequently asked questions

Related guides

• Cigna: denied claim
• Anthem: denied claim
• Aetna: denied claim
• UnitedHealthcare: prior authorization denial
• UnitedHealthcare: surprise medical bill
• UnitedHealthcare: out-of-network coverage