Insurance Appeal Letter Sample (and a Stronger Way to Build One)
You can copy a template, but a generic letter is the main reason appeals fail. Here is the structure that actually wins, annotated, and a tool that builds a stronger version from your specific denial.
The four parts of an appeal letter that works
1. Header and denial reference
Your name, member ID, claim or reference number, date of the denial, and the service denied. Quote the carrier's exact denial reason. Reviewers move faster when you name their own words back to them.
2. Why the denial is wrong (the argument)
Address the specific reason. For a medical-necessity denial, map your records to the plan's own criteria. For step therapy, document the drugs you tried and why they failed. Generic pleas to reconsider do not move the needle; a point-by-point rebuttal does.
3. The controlling rule
Cite the standard that governs your plan: 29 CFR 2560.503-1 for employer (ERISA) plans, 45 CFR 147.136 for ACA plans. These require a full and fair review and entitle you to the exact criteria the plan used. Demanding those criteria is often what wins.
4. The specific relief and deadline
State exactly what you want (overturn the denial, approve the service) and note your appeal is timely. Attach the denial letter, relevant records, and a letter of medical necessity from your provider.
Skip the blank page
Apellica turns your denial into a complete, evidence-based appeal in minutes: the right argument, the controlling regulation, and your records, assembled and reviewed by a senior specialist. Across 73,987 real external-review outcomes we analyzed, 46.9% of appealed denials were overturned.
Frequently asked questions
- Is a sample appeal letter enough to win?
- A template gives you the shape, but generic letters are why most appeals fail. What wins is a letter built around your specific denial reason, your records, and the rule that governs your plan. That is exactly what Apellica assembles for you.
- Do I have to write the appeal myself?
- No. Apellica reads your denial, builds the evidence-based letter, and a senior reviewer checks it before it goes out. $0 upfront, and you pay only if we win.
- How long do I have to appeal?
- Most employer (ERISA) plans give you at least 180 days from the date on the denial letter (29 CFR 2560.503-1). State-marketplace and other plans vary, so check the date on page one of your denial.