The National Medical Commission of India introduced the Competency Based Curriculum in Medical Education for undergraduate medical students in 2019 with a new module named Attitude, Ethics and Communication (AETCOM) across the country. There was a consensus for teaching medical ethics in an integrated way, suggesting dedicated hours in each phase of undergraduate training. The AETCOM module was prepared and circulated as a guide to acquire necessary competency in attitudinal, ethical and communication domains. This study was aimed to explore the (...) perceptions of students and medical teachers and identify the challenges in teaching and learning process of the newly implemented AETCOM module. It was a mixed method designed study with structured questionnaires for students and teachers at various medical schools in India. Based on the quantitative data, in-depth interviews with medical teachers were undertaken. Challenges were perceived by both students and teachers. The students had a mixed perception, facing difficulties in passive learning with scarce resource materials. Challenges identified by teachers were a lack of knowledge and skills required for teaching bioethics, the logistics of managing large numbers of students in the stipulated time frame, interdisciplinary integration—both horizontal and vertical, and assessment program in terms competency-based education. The study draws the attention of all stakeholders for a revision and efforts for further improvement in the teaching and assessment process, and setting a standard model in medical education in India. (shrink)