The Drugs (Prices Control) Order, 2013 (DPCO 2013) contains various schedules that list different categories of drugs and their price regulations. Schedule I of DPCO 2013 lists the National List of Essential Medicines (NLEM) and specifies the ceiling prices for these scheduled formulations. Schedule I of the DPCO 2013 is divided into 27 therapeutic categories or sections, based on the Anatomical Therapeutic Chemical (ATC) classification system. Each section covers a specific therapeutic area and lists the essential medicines falling under that category.