| X335 | Implementation Acknowledgment for Health Care Insurance | 999 |
| X298 | Post-adjudicated Claims Data Reporting: Professional | 837 |
| X299 | Post-adjudicated Claims Data Reporting: Institutional | 837 |
| X300 | Post-adjudicated Claims Data Reporting: Dental | 837 |
| X305 | Provider Enrollment for EDI Services | 838 |
| X318 | Plan Member Reporting | 834 |
| X321 | Application Reporting For Insurance | 824 |
| X322 | Health Care Claim Payment/Advice | 835 |
| X323 | Health Care Claim: Professional | 837 |
| X324 | Health Care Claim: Institutional | 837 |
| X325 | Health Care Claim: Dental | 837 |
| X326 | Health Care Service: Data Reporting | 837 |
| X327 | Health Care Services Review - Inquiry and Response | 278 |
| X328 | Health Care Services Review Notification and Acknowledgment | 278 |
| X329 | Health Care Claim Status Request and Response | 276/277 |
| X330 | Health Care Claim Acknowledgment | 277 |
| X331 | Health Care Claim Pending Status Information | 277 |
| X333 | Benefit Enrollment and Maintenance | 834 |
| X340 | Health Care Claim Request for Additional Information | 277 |
| X341 | Additional Information to Support a Health Care Claim or Encounter | 275 |
| X342 | Health Care Services Review - Request for Review and Response | 278 |
| X343 | Additional Information to Support a Health Care Services Review | 275 |
| X344 | Premium Payment Grace Period Notification | 271 |
| X346 | Health Insurance Exchange: Enrollment | 834 |