133Denial Code (CARC)Active
OA 133 Denial Code: Pending Review Solutions
Code 133 indicates that the service line's disposition is pending further review. This means the payer has not yet finalized their decision on this portion of the claim. You will find this code paired with Group Code OA on the remittance advice, signifying an interim status rather than a final adjustment.
Who Pays: Group Code Liability
With Group Code OA, the liability does not transfer to the provider or patient yet. The payer is still reviewing the service line, so neither the patient nor the provider should assume responsibility at this point.
Why Claims Get Code 133
- Incomplete documentation submitted with the initial claim.
- The payer requires additional clinical information to process the service line.
- The service line is under medical review by the payer.
- Possible coordination of benefits issue under investigation by the payer.
How to Fix & Resubmit
- Verify if any additional documentation or information was requested by the payer.
- Check the payer's portal or contact them directly to understand what specific information is needed.
- Gather and submit the required documentation or information as instructed by the payer.
- Monitor the claim status regularly to see when the payer finalizes their review.
- Once the payer provides a final determination, submit a corrected claim if necessary.
Corrected Claim or Appeal?
For code 133, neither an appeal nor a corrected claim is immediately warranted since the payer's review is still pending. Wait for the payer's final determination before taking further action.
Preventing Future 133 Denials
- Ensure all required documentation accompanies the initial claim submission.
- Verify payer-specific requirements for clinical documentation before submitting claims.
- Regularly update billing processes to align with payer review practices.
- Use a checklist to confirm that all necessary information is included with each claim submission.