A claim denial means the insurance company has processed the claim but decided not to pay for it due to missing information, coding issues, or coverage problems. Unlike a rejection, which can be fixed and resubmitted immediately, a denial usually requires a formal appeal or correction.
What is CO 29 Mean? The CO 29 denial code stands for “The time limit for filing has expired.” This CO 29 denial occurs when a healthcare provider submits a claim after the payer’s timely filing limit (TFL) has passed. Every insurance company sets a deadline — usually 90 to 365 days from the Date…
What is CO 18 Mean? The CO 18 denial code stands for “Duplicate claim/service.” This means the insurance payer has determined that the claim or a specific service line was already submitted and processed previously — and the new claim appears to be a duplicate. In other words, the payer believes you’ve already billed for…