Insurance denial appeal letter generator
Pick the denial code, fill in the claim, and get a professional appeal letter that opens with the argument that actually wins that code's appeals — proof of submission for timely filing, the authorization record for CO-197, the clinical case for medical necessity. Copy it, finish the bracketed specifics, send it. No signup, no card, no email.
Everything you type stays in your browser. The letter is assembled on this page — no server, no AI call, no storage — which is exactly how a tool that handles patient and claim details should work.
Common questions
- How do I write an appeal letter for an insurance denial?
- Identify the claim precisely (patient, member ID, claim number, date of service), name the denial code you are appealing, make the argument that answers that specific code — proof of timely submission for a filing denial, clinical documentation for a medical-necessity denial, the authorization number for an authorization denial — list your enclosures, and request reconsideration in writing. The strongest letters argue against the code's actual reason, not against the denial in general.
- Is this appeal letter generator really free?
- Yes, with no account and no card. It also runs entirely in your browser: the letter is assembled on this page from templates, and nothing you type is transmitted or stored anywhere.
- Which denials are worth appealing?
- Denials where a written appeal changes the outcome: missing authorization (CO-197), timely filing with proof of submission (CO-29), medical necessity (CO-50), experimental or investigational classification (CO-55), network-status errors (PR-242), benefit counts that are simply wrong (PR-119), and documentation requests that were answered (CO-226). Some codes should not be appealed at all — CO-45 contractual write-offs and CO-253 sequestration are the contract and the law working as written, and our denial-code pages say so rather than selling you an appeal.
Appeal less by denying less
An appeal letter is the expensive way to get paid — it recovers one claim, weeks late. The cheap way is to catch the cause before submission. Our free claim scrubber flags the diagnosis-coding errors behind the most common denials, each denial code page explains how to stop that code recurring, and the paid workspace runs those checks on every claim.