INS and type 2 diabetes mellitus: There are limited data on the use of CGM during pregnancies complicated by type 2 diabetes (T2D) or gestational diabetes mellitus (GDM) or on the benefit of newer more accurate CGM systems.15 Current CGM systems can display data locally as well as remotely, be used for insulin dosing decisions, automatically alert users (and their remote followers) to abnormal values or trends, and do not require routine calibration by the user.