OA Rejections
Diagnosis code __ is not billable (further specification required)
Rejection
Diagnosis code (number/letter will be specified) is not billable (further specification required). (FE141)
What happened
Diagnosis code in the position specified in Box 21 is no longer billable.
Resolution
Review the patient’s medical record and select the most specific ICD-10 diagnosis code available. Update the claim with the correct code in Box 21 and resubmit.