If you make a list of the top 10 factors that can completely disrupt the revenue cycle of a practice, claim denials will be at the top. Every year, hospitals and independent practices lose billions of dollars due to insurance denials. There can be hundreds of reasons for claims denials. However, often the rejections are due to simple documentation errors.
CO 252 denial code represents a type of documentation error. It is particularly frustrating to deal with because it can be easily prevented, and yet it can significantly impact your bottom line. So, what can you do about it?
That’s what this guide is all about. So, continue reading.
CO 252 Denial Code – Description
Denial code CO 252 is defined as:
“An attachment/other documentation is required to adjudicate this claim/service.”
In other words, when a claim is sent back with the CO 252 denial code, it is because the payer cannot process the claim due to the absence of essential supporting documentation. This implies that the missing documentation is not optional and is mandatory for the insurance payer to verify the appropriateness and medical necessity of the billed services.
Every claim that is rejected with a denial code 252 includes at least one remark code. The purpose of these remark codes is to provide a more detailed explanation of why a claim is rejected. For instance, in the case of CO 252, the remark codes specify exactly which documents are missing. The remark codes can be of the following two types:
- NCPDP: National Council for Prescription Drug Programs Reject Reason Code – typically for pharmacy-related denials.
- RARC: Remittance Advice Remark Code – for general healthcare services.
Frequently appended remark codes with the CO 252 denial code are:
- N479: Indicates a missing Explanation of Benefits (EOB), typically required by the secondary payer.
- N710: Missing notes, e.g., operational, clinical, or therapy notes.
- N712: Missing summary of care, usually required for complex or continuing care cases.
- N714: Missing reports, essential for claim processing.
- N716: Missing patient charts or clinical documentation.
Note that the corresponding remark codes for denial code 252 are never an ALERT.
What Causes the CO 252 Denial Code?
Before we can discuss how to prevent and resolve the denial code CO 252, it is first essential to understand the root causes that trigger it. Here are some common reasons why claims receive this denial code:
Missing Medical Records and Clinical Documentation
One of the most common reasons is the submission of incomplete medical records. It is especially true for surgical procedures. For all surgical procedures, detailed documentation is vital. The complete operative report must be provided, which clearly shows what was actually performed during the surgery.
Similarly, for diagnostic services, test results, laboratory reports, imaging studies, and other documents must be attached. They serve as the foundation to justify the medical necessity.
Failure to Get Prior Authorization
Many procedures and services require prior authorization from insurance payers before they can be performed. When providers fail to include prior authorization numbers or documentation, claims are automatically denied with CO 252.
Secondary Payer Requirements
Oftentimes, patients have multiple insurance coverages. So, when multiple payers are involved, the secondary payer usually requires EOB documentation from the primary payer to process the claims.
How to Prevent CO 252 Denial Code?
Preventing CO 252 denials is more efficient and cost-effective than resolving them after they occur. The following are some tips from NeuraBill’s billing experts to prevent the denial code CO 252:
Implement Comprehensive Documentation Protocols
As a healthcare provider, the most important thing you can do to improve the claims acceptance rate is to create a strong data collection and documentation system. For CO 252 specifically, establish clear protocols for each service type that outline exactly what documentation must be collected before billing. You can also create manual or automated specialty-specific checklists that your staff can follow when filing claims.
Additionally, the path to better reimbursements starts with data collection. For this, you should develop a strong front-desk data collection system and train your staff on it.
Pre-Submission Verification and Claim Scrubbing
Another tool that can greatly help you in reducing denials is claim scrubbing software. These are essential tools that every billing team must have. How do they help? Well, claim scrubbing tools can identify potential CO 252 denials before you submit the claims. The software has a pre-built database of thousands of billing codes and their requirements. So, every time you file a claim, the scrubbing tool automatically checks the required documentation based on the procedure code and payer requirements.
These systems flag claims documentation issues, allowing staff to gather necessary materials before submission.
Prior Authorization Management
Prior authorization issues have a denial code of their own. However, insurance payers can reject a claim with the CO 252 denial code if you do not provide authorization documentation with the claim.
To tackle this issue, maintain digital copies of all authorization approvals. Additionally, train your staff to verify authorization requirements during appointment scheduling, not during billing.
How to Resolve Denial Code 252?
Despite best prevention efforts, CO 252 denials may still occur. If you are ever faced with the CO 252 denial code, you can take the following steps to rectify it:
Analyze EOB/ERA Details
- Start by reviewing the EOB and Electronic Remittance Advice (ERA). Identify which missing document the insurance payer is pointing to. Check for remark codes to understand the specific requirements.
- Note all the details from EOB, ERA, and remark codes. This will help you in gathering the missing documentation.
Gather Required Documentation
- Collect requested documents from physicians, labs, or payer files based on denial analysis.
- Just gathering the documents isn’t enough. Make sure the documents you have are verified and legitimate.
Verify Remark Code Requirements
- Cross-reference remark codes with payer guidelines to confirm the correct documentation type and format.
Prepare and Submit Corrected Claim
- Include a cover letter referencing the original claim number and addressing each remark code.
- Organize and label all attachments clearly with patient and claim information.
Follow-Up and Track Resolution
- Set follow-up schedules for resubmitted claims (typically processed in 14-30 days).
Final Word on Denial Code 252
The CO 252 denial code is among the most frequently occurring, yet it can be easily prevented. All you need to do is pay attention to billing guidelines and create a systematic approach for gathering and appending the appropriate documents.
However, even after following all the guidelines and implementing preventive measures, denials can occur. If your practice’s performance is affected by frequent claim denials, consider employing our denial management services. We have a track record of 97% claims accepted on the first attempt.
