The document presents national guidelines for the diagnosis and management of gestational diabetes mellitus (GDM) in India, highlighting the critical importance of identifying and managing GDM due to its high prevalence and associated risks for mothers and infants. It outlines the operational and technical guidelines developed by the Ministry of Health and Family Welfare to be integrated into routine antenatal care services, aiming to improve health outcomes and reduce morbidity and mortality rates linked to GDM. The guidelines serve as a standardized resource for state health officials to implement effective screening and management protocols across the country.