Prior Authorization Appeal Generator

If your insurer denied prior authorization for a drug or procedure, you need a clear appeal that speaks the payer’s language. This tool translates the denial into plain English and builds a complete appeal letter you can submit through your plan’s process.

What you get

Plain-English summary of what the denial is claiming
An appeal letter structured for insurance review and tailored to your insurer's specific appeal process and deadlines
Guidance on the grounds that often succeed on appeal, including payer-specific clinical criteria references
Your saved plan details included automatically if you have a plan profile saved -- no need to re-enter coverage information
A document you can edit with your specific clinical details

Who this is for

Patients and caregivers who received a prior authorization denial for imaging, specialty drugs, surgery, or other care their clinician recommended.

Common situations this tool handles

Your insurer denied coverage for an MRI your neurologist ordered, citing lack of medical necessity.
A specialty medication for a chronic condition was denied because the insurer requires step therapy with two cheaper drugs first.
Your surgeon's office submitted a prior authorization for a knee replacement and received a denial with reason code CO-50.

What your analysis looks like

Sample analysis for illustration. Your output will reflect your specific document and situation.

PRIOR AUTHORIZATION APPEAL SUMMARY

Denial reason: Medical necessity not established (reason code CO-50) Payer: [Payer name] Service requested: Lumbar MRI (CPT 72148)

APPEAL GROUNDS

The denial states that conservative treatment has not been documented. However, the treating physician's notes from the past six months document ongoing physical therapy (12 sessions), two courses of prescription anti-inflammatory medication, and documented functional limitation affecting activities of daily living. This record establishes a clinical basis consistent with payer guidelines for advanced imaging.

The applicable clinical coverage policy (most major payers follow InterQual or MCG criteria for lumbar MRI) typically requires: symptom duration greater than six weeks (met), failure of conservative treatment (documented), and neurological symptoms or red flag indicators (present per physician notes).

RECOMMENDED APPEAL LANGUAGE

The following letter is structured for first-level internal appeal. It references the treating physician's clinical documentation and requests reconsideration under the plan's coverage criteria for diagnostic imaging... [Full appeal letter follows with payer address block, member information fields, and regulatory citations...]

See your full analysis

Get Started

Questions about this tool

How long do I have to file an appeal?

Most plans require internal appeals within 180 days of the denial notice. Urgent care appeals have shorter windows, often 72 hours. Check your denial letter for the specific deadline.

What is step therapy and can I get an exception?

Step therapy requires trying lower-cost drugs before the requested one. Most states have step therapy exception laws. Bill Advantage can help you draft an exception request based on your clinical situation.

What if my internal appeal is also denied?

You can request an external review by an independent organization. This right is guaranteed under the ACA for most plans. Bill Advantage can help you prepare that request as well.

What is new in 2026

New CMS Prior Authorization Timelines

A CMS rule effective January 1, 2026 requires payers to decide standard prior authorization requests within 7 calendar days and expedited requests within 72 hours. If your insurer exceeded these windows, that violation is grounds to include in your appeal.

These are general updates only. Your specific analysis always uses the latest rules for your document.

How it works

Upload your document. Photo or PDF of your medical bill, EOB, denial letter, or COBRA notice. No account needed to start.
We review it. Bill Advantage reviews your document against healthcare billing rules, insurance regulations, and common error patterns, reflecting the knowledge of healthcare billing professionals, encoded into a system that works in minutes, not days.
You get answers. Receive a plain-English explanation of exactly what happened and why. For most tools, a ready-to-send dispute or appeal letter is included. Save results to your Healthcare Finance Tracker, set reminders for follow-up deadlines, and build a complete record of your healthcare finances over time.

Denial Letter Translator - Denial letters are full of codes and jargon. Bill Advantage translates those codes into plain English and gives a practical read on whether an appeal is like...
Insurance Statement Decoder - Your Explanation of Benefits is not a bill, but it controls what you may owe. This tool breaks down each line: allowed amounts, patient responsibility, and a...
Health Insurance Plan Comparison - Choosing between two employer or marketplace plans is easier when you see deductibles, out-of-pocket caps, and cost-sharing side by side. Enter the details y...
Pharmacy and Specialty Medicine Disputer - Prescription denials, step therapy requirements, and specialty medication prior authorizations are among the most frustrating insurance decisions to navigate...

Ready to get started?

Start with 7 days of full Member access. No credit card required.

Try Prior Authorization Appeal Generator