Insurance Appeal Resources
Practical guides on denial codes, appeal strategies, and medical billing — written by revenue cycle specialists.
Featured Article
5 Most Common Reasons Insurance Claims Get Denied (And How to Fight Back)
Wondering why your insurance claim was denied? These 5 denial reasons account for over 70% of all rejections — and every one of them is appealable. Here's how.
March 10, 2026·6 min read
Read article →CO-197prior authorization
CO-197 Denial: What It Means and How to Write a Winning Appeal
CO-197 is the fastest-growing denial code in medical billing. Learn exactly what it means, why it happens, and how to write a successful appeal with sample letter language.
March 15, 2026 · 7 min readRead →
appeal deadlinestimely filing
How Long Do You Have to Appeal a Denied Insurance Claim? State-by-State Guide
Missing an appeal deadline is the #1 reason winnable claims are lost forever. Here are the federal and state-specific timelines you need to know before you run out of time.
March 20, 2026 · 8 min readRead →
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