UnitedHealthcare denied your claim — here's how to appeal
The largest US commercial insurer, with heavy use of prior authorization and automated medical-necessity review.
Plans this covers
Deadlines and how the process runs
- Appeals for UMR-administered plans go to UMR, not UnitedHealthcare — check the payer name printed on your EOB, not your ID card logo.
- Prior-authorization denials (CO-197) are the single most common reversal category: if the service was urgent or the auth was obtained but not attached to the claim, say so explicitly in the first paragraph.
- Medicare Advantage denials follow CMS timelines, not ERISA ones, and include an automatic review by an independent entity if the plan upholds its denial.
Rights that apply to every plan
- You generally have at least 180 days from the date on your denial notice (EOB) to file an internal appeal with your insurer.
- The insurer must decide standard internal appeals within 30 days for pre-service claims and 60 days for care you already received.
- Urgent cases get an expedited review — typically within 72 hours.
- If the internal appeal fails, you can request an independent external review, usually within 4 months of the final internal denial. The external reviewer's decision is binding on the plan.
- Self-funded employer plans follow ERISA rules; fully insured plans also fall under your state insurance department, which can be a second place to complain.
Denial codes you'll most likely see from UnitedHealthcare
A real example
- The situation
- An MRI of the knee (CPT 73721) billed at $2,480 after an ER referral, denied as 'not medically necessary'.
- What went wrong
- The imaging order was placed by the ER physician, but the prior-authorization record sat under the orthopedist's NPI, so the claim came back with CO-197.
- What worked
- An internal appeal attaching the ER discharge note and the existing authorization number got the denial reversed — patient responsibility dropped from $2,480 to the plan's $250 imaging copay.
Appealing a UnitedHealthcare denial, step by step
- 1Get the itemized bill from the provider and the EOB from the insurer, and line them up against each other.
- 2Find the denial code on the EOB and read what it actually means — it tells you whether the fix belongs to the insurer or the billing office.
- 3Note the appeal deadline printed on the denial notice and calendar it the same day.
- 4Request the clinical records or authorization number that answer the stated reason for denial.
- 5Send a written internal appeal that names the claim number, quotes the denial code, and states the specific correction you want.
- 6If it is upheld, request an independent external review before that window closes.
UnitedHealthcare appeal FAQs
How long do I have to appeal a UnitedHealthcare denial?
Most UnitedHealthcare commercial plans allow at least 180 days from the date on your EOB for a first-level internal appeal. Medicare Advantage plans typically allow 60 days. The exact window is printed on the denial notice — that number governs, so check it before anything else.
What does a CO-197 denial from UnitedHealthcare mean?
CO-197 means precertification or prior authorization was absent when the claim was processed. It is one of the most reversible denials because it is a paperwork problem, not a coverage decision — if authorization existed, or the care was emergent (which waives prior auth), the claim should be reprocessed.
Can I go to an outside reviewer if UnitedHealthcare denies my appeal?
Yes. After the final internal denial you can request an independent external review, generally within 4 months. The external reviewer is not employed by the plan and its decision binds the insurer.
Let BillCheck write the UnitedHealthcare appeal for you
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BillCheck provides informational analysis only and is not legal, medical, or financial advice. Verify all details before submitting any correspondence to insurers or providers. Deadlines and processes vary by plan — the notice you received governs.