Medical ethics has become an important and recognized component of physician training. There is one area, however, in which medical students receive little guidance. There is practically no discussion of the financial aspects of medical practice. My objective in this paper is to initiate a discussion about the moral dimension of physician billing practices. I argue that physicians should expand their conception of professional responsibility in order to recognize that their moral obligations toward patients include a commitment to honest and forthright billing practices. I argue that physicians should aspire to a standard of clinical accuracy-not legal adequacy-in describing their activities. More generally, physicians should strive to promote an integrity-based professional culture, first and foremost by stigmatizing rather than celebrating creative billing practices, as well as condemning the misguided sense of solidarity that currently makes it taboo for physicians to criticize each other on this score.