| Claim denied as Duplicate Claim/Service – Denial Code OA 18 / CO 18 in Medical Billing | |
| 1 | May I know the Claim received date |
| 2 | May I know the denied date |
| 3 | May I know the original claim status |
| 4 | If original claim is denied go by the denied scenario |
| 5 | If it is paid go by the paid scenario and if it is in-process then go by the in-process scenario |
| 6 | May the original and current claim# |
| Could you please send the copy of EOB (duplicate copy) | |
| 7 | May I know the call ref# |
