After completing a BAMS course, you can pursue higher studies, but pursuing an MS in modern surgery directly after BAMS is not typically allowed.
BAMS graduates are primarily trained in Ayurvedic medicine, and the MS (Master of Surgery) in modern medicine is reserved for those with an MBBS degree.
However, you can pursue an MD/MS in Ayurvedic Surgery, which is a postgraduate degree focusing on surgical techniques rooted in Ayurveda, such as Shalya Tantra (Ayurvedic surgery) and other related fields. This allows BAMS graduates to specialize in surgical disciplines within the Ayurvedic system.