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What are the most common denial codes in 2024

Nearly 49% of claims are frequently denied for common reasons. To help you understand and address these issues, we’ve created a list of the most common denial codes in medical billing. Here are the key codes you should be familiar with.

Denial Overview

Denials in medical expenses occur when a payer denies a claim based on procedural rules due to issues such as missing information, legal errors, or insufficient medical need. Healthcare providers should consume and analyze rejection processes to identify areas for improvement.

Common Denial Reasons in Medical Billing

Medical claim denials are a significant challenge for healthcare providers, often delaying or preventing payment. Understanding the common reasons for denials is essential to improving revenue cycle management.

One leading cause is missing or incorrect information, such as patient details or insurance information. Even minor errors can lead to claim rejection. When inputting patient data, especially for new patients, make sure it is accurate.

Verify the patient’s information with their insurance card at every appointment to prevent inconsistencies.

Make the necessary corrections and resubmit claims using the updated patient identity information.

Medical necessity denials happen when backup plans consider a treatment pointless in light of their rules. Finally, claims are frequently denied for administrations not covered under a patient’s protection plan, like elective systems or out-of-network care. Medical services suppliers should confirm inclusion, get vital approvals, and guarantee precise coding to forestall these dissents.

Most Common Denial Codes in 2024 and How to Address Them


In 2024, while many codes remain consistent, there are emerging trends and adjustments in claim management systems. This blog will discuss the most common denial codes and offer insights into handling them effectively.

1.   CO-16: Claim/Service Lacks Information

This denial occurs when required information is missing from the claim. It may refer to incomplete documentation, missing prior authorizations, or incomplete patient details.

How to Address It:

     Verify patient demographic information before submitting claims.

     Ensure that all supporting documentation, such as lab reports or referrals, is included.

     Double-check for prior authorization requirements before delivering services.

 

2.   CO-97: Service Not Medically Necessary

Claims are denied under this code when the payer determines that the service provided is not necessary based on the patient’s condition.

How to Address It:

     Review the payer’s medical necessity guidelines and adjust your coding to meet their criteria.

     Submit supporting documentation that justifies the need for the service or procedure.

     If appropriate, appeal the denial with evidence of the medical necessity.

 

3.   CO-109: Benefit Maximum Has Been Reached

This denial is issued when the patient’s coverage limits for a specific service have been exhausted.

How to Address It:

     Check patient benefit plans and coverage limits before providing services.

     Communicate with patients about their coverage and potential out-of-pocket expenses once the limit is reached.

     Submit claims only for services that are still covered within the benefit limits.

4.   CO-29: Time Limit for Filing Has Expired

Claims denied due to late submission past the payer’s filing deadline.

How to Address It:

     Stay informed about each payer’s filing deadline (which can range from 90 days to one year).

     Implement a claims submission workflow to ensure timely filing.

     For denied claims, appeal with valid reasons for the delay and request reconsideration.

 

5.   CO-22: Covered by Another Payer

This code indicates that the service is covered under another payer, typically when the coordination of benefits is not handled correctly.

How to Address It:

     Confirm if the patient has secondary or tertiary insurance coverage before submitting the claim.

     Ensure that the coordination of benefits is accurately documented in the claim.

     Contact the primary payer to resolve any discrepancies in payment.

 

6.   CO-151: Payment Adjusted Due to a Prior Overpayment

This denial happens when the payer reduces the current claim payment to adjust for a previous overpayment.

How to Address It:

     Review past payments and ensure they align with the services billed.

     Correct any identified overpayments promptly to avoid further payment reductions.

     Work with the payer to resolve overpayment disputes if necessary.

 

7.   CO-18: Duplicate Claim

     This happens when a similar help is billed at least a couple of times, either because of a framework blunder or a manual accommodation botch.

How to Address It:

     Confirm claims accommodation logs to forestall inadvertent copy entries.

     Review your charging cycle to recognize any common issues prompting duplicates.

     If the denial is incorrect, appeal with a detailed explanation and proof of non-duplication.

 

8.   CO-50: Not Covered by the Payer

This denial code applies when the services provided are not covered under the patient’s insurance plan.

How to Address It:

     Confirm coverage policies before delivering services to avoid non-covered claims.

     Offer patients alternate treatment options that are covered by their plan.

     If the service should be covered, appeal the denial and provide appropriate documentation.

 

9.   CO-177: Patient Has Not Met Deductible

This indicates that the patient’s deductible has not been fully met, leading to the denial of payment from the insurance.

How to Address It:

     Inform patients about their deductible status and potential financial responsibility.

     Collect the deductible amount upfront, where possible, to avoid claim denials.

     Resubmit claims once the deductible is met, or instruct the patient on the payment process.

 

10.              CO-140: Patient/Insured Health Identification Number and Name Mismatch

This denial results from discrepancies between the patient’s identification number and the name on the insurance file.

How to Address It:

     When inputting patient data, especially for new patients, make sure it is accurate.

     Verify the patient’s information with their insurance card at every appointment to prevent inconsistencies.

     Make the necessary corrections and resubmit claims with the updated patient identity information.

Final Note:

The most common denial codes in 2024 include CO-16 (Claim lacks information), CO-97 (Service not covered), and CO-18 (Duplicate claim). Proper documentation and coding are essential to avoid these denials.

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