Propose an improvement to the healthcare system when healthcare professions have knowledge and understanding of the ethical guidelines of disciplines other than their own

Propose an improvement to the healthcare system when healthcare professions have knowledge and understanding of the ethical guidelines of disciplines other than their own.Its asking how knowing about other healthcare profession's ethical guidelines helps to improve the healthcare system and it also needs a real life example.
The example I had was said to be invalid: Doctors knowing pharmaceutical ethics would not over prescribe meds to patients as it goes against pharmaceutical ethics.