Health Care Eligibility Work Group (WG1) of the Health Care Task Group (TG2) of the Insurance Subcommittee (N) of X12. This group maintains the X12 270 Health Care Eligibility & Benefit Inquiry and the X12 271 Health Care Eligibility & Benefit Response transactions. It is also responsible for maintaining the Interactive Healthcare Eligibility & Benefits Inquiry (IHCEBI) and Response (IHCEBR) transactions.