| Professional/1500 Claims | No Enrollment Required |
| Institutional/UB Claims | No Enrollment Required |
| Eligibility | No Enrollment Required |
| Electronic Remittance (ERA) | Enrollment Required - Instant |
| Secondary Claims | No Enrollment Required |
| GEHA - Aetna Signature Administrators |
| 7187 |
| 8628 |
| Only claims with a service date on or before 12/31/23 |