Cigna-HealthSpring has implemented the Health Level Seven (HL7) standard messaging format for the transmission of lab results data, version 2.5.1. This data is essential for HEDIS® reporting, in support of early detection and quality improvement for our customers. HL7 provides a robust and standardized approach to data exchange that is widely recognized and used in the health care industry. Where not explicitly stated otherwise, the HL7 standards are the required format for the transmission of lab results data to Cigna-HealthSpring. A companion guide, containing additional details and instructions for submitting lab results data in this format, can be found by clicking here.