Free Insurance Appeal Generator
AppealFlow is a free health insurance appeal letter generator for US claim denials, prior authorization failures, and surprise bills. Upload your EOB or denial letter, customize the draft, and download a PDF or Word file in under a minute. No account or payment is required.
No signup · No credit card · No hidden fees
Try the Appeal Generator
Upload your denial letter or enter claim details to draft a formal appeal instantly.
Loading generator…
Specialized appeal generators
Free tools for common denial types. Each page includes a short practical guide — not a promise of approval.
GLP-1 Appeals
PharmacyDraft an appeal for denied Wegovy, Zepbound, Ozempic, or Mounjaro prior authorization.
Open tool →
MRI & Imaging
ImagingAppeal a denied MRI, CT, or PET scan using medical-necessity documentation.
Open tool →
No Surprises Act
EmergencyDispute an out-of-network ER or facility surprise bill under federal law.
Open tool →
Dental Appeals
DentalAppeal denied crowns, implants, root canals, or orthodontia with clinical records.
Open tool →
Financial Aid
EducationRequest a FAFSA professional judgment review or appeal a SAP suspension.
Open tool →
Medical Necessity
ClaimsRespond to a “not medically necessary” denial with diagnosis, records, and guidelines.
Open tool →
Prior Auth
ClaimsAppeal a missing, delayed, or denied prior authorization before you lose coverage.
Open tool →
Rx / PBM
PharmacyAppeal a PBM or insurer formulary denial, quantity limit, or non-formulary drug.
Open tool →
Step Therapy
PharmacyRequest an exception when the plan requires you to try a cheaper drug first.
Open tool →
How It Works
Three simple steps to a professional appeal letter — no account required.
Step 1
Upload or enter details
Drop your EOB or denial letter for OCR scanning, or manually enter carrier and denial details.
Step 2
Generate your letter
The tool drafts a formal appeal with plan-specific language and clinical arguments you can edit.
Step 3
Download free PDF
Edit the letter live, then export to PDF or Word, print, or email — no account required.
Key Takeaways: How to Appeal a Claim Denial
- Your right to appeal: Under ERISA §503 and ACA §2719, insurers must provide a full and fair review of denied claims. You have the legal right to submit a written appeal.
- Act before the deadline: Most plans allow 60 to 180 days from the denial date. Check your EOB for the exact appeal deadline; late submissions are typically rejected.
- Include supporting documents: Attach medical records, physician letters of medical necessity, prior authorization records, and the original denial letter.
- Use a structured appeal letter: A professional letter citing federal protections, clinical justification, and specific policy language gives reviewers the facts they need to reconsider.
What Is a Health Insurance Claim Appeal?
A health insurance claim appeal is a formal request to reverse a denial on your Explanation of Benefits (EOB). Federal rules require most US health plans to offer an internal review when they deny coverage for medical necessity, prior authorization, or other benefit reasons listed on your notice.
Your appeal letter should name the patient and claim number, quote the denial reason code, explain why the decision is wrong under your plan documents, and attach supporting clinical records. Browse the insurance appeal guides for step-by-step workflows by denial type.
How Do I Appeal a Denied Claim for Free?
Start with the denial letter and EOB. Note the appeal deadline, gather records from your provider, then draft a structured letter. Use AppealFlow's free insurance appeal generator or pick a specialized tool from the tools hub. Submit through the channel on your notice (portal, fax, or certified mail) and keep proof of filing.
Which Denial Types Does AppealFlow Cover?
The medical necessity appeal generator fits CO-50 and similar clinical denials. The prior authorization appeal generator helps when precertification was denied or missing. We also cover GLP-1 pharmacy denials, MRI and imaging claims, dental appeals, step therapy exceptions, and No Surprises Act emergency bills.
What Documents Should I Attach to an Appeal?
Include your denial letter, EOB, itemized bill, treating physician notes, test results, and any prior authorization approvals. A letter of medical necessity should map your symptoms and failed treatments to the plan policy cited in the denial. If internal review fails and your plan qualifies, Healthcare.gov describes external review rights for many ACA marketplace plans.
Legal & Clinical Compliance
Every letter can include citations to federal protections that insurers must follow.
ERISA §503
Full and fair review rights for employer-sponsored health plans.
ACA §2719
Internal appeals and external review protections under the Affordable Care Act.
No Surprises Act
Emergency out-of-network billing protections and good faith estimates.
Frequently Asked Questions
Common questions about health insurance claim appeals and how AppealFlow works.