This transaction set is used to report occupational injuries, illnesses, or incidents that occur in a workplace. Employers, third-party administrators, or insurance carriers send the 148 to workers’ compensation insurers, government agencies, or occupational health programs to document and communicate details about workplace incidents. The transmission is typically initiated following an incident occurrence, as required by regulatory reporting obligations or insurance claim procedures. Key segments include the BGN (Beginning Segment) to establish the report’s purpose and timing, the HL (Hierarchical Level) to organize the hierarchical structure of involved parties and incident details, and the NM1 (Individual or Organizational Name) to identify the employer, injured employee, attending provider, and other relevant participants in the incident.

Consider a scenario where Midwest Manufacturing reports a workplace injury to SafeGuard Workers’ Compensation Insurance. An employee at Midwest’s facility sustained a back strain on the production line. Midwest submits an X12 148 transaction to SafeGuard within 24 hours of the incident, populating the NM1 loop with Midwest Manufacturing’s details as the employer, the injured worker’s personal information and date of birth through the DMG segment, and the attending physician’s contact information. The HL loop structure captures the hierarchical relationship between the employer entity, the injured employee, and the medical provider, while CRC segments document relevant conditions such as body part affected and whether the employee lost work time. DTP segments record the date of injury, date the report was filed, and dates of medical treatment, enabling SafeGuard to process the claim and initiate appropriate benefits.