Practical writing on denial codes, appeal strategy, and getting paid for work you have already done.
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CO 18 means a claim was flagged as a duplicate. Learn why it happens, how to verify the denial, and when to correct, resubmit, or appeal.

Have a Health Insurance Claim Denied? Explore 10 common denial reasons, key CARC/RARC codes, and what to check when a claim is denied.

Got a healthcare claim denial? Learn what to check first, when to resubmit or appeal, and how AI can streamline denial management.