The Seventeen Rules of Enjuin (延寿院医則十七ヶ条) are a code of conduct developed for students of the Japanese Ri-shu school of medicine in the 16th century CE.
[1] The rules are similar to the Vejjavatapada, the Buddhist medical doctor's oath, the Oath of Asaph and the Hippocratic Oath, in that they stress the rights of the physicians' teachers, require the physician to respect the patient's privacy rights, and prohibit both euthanasia and abortion.
[2] 1) Each person should follow the path designated by Heaven (Buddha, the Gods).
6) All the successors and descendants of the disciples of this school shall follow the teachers' ways.
You should not rebuke or reprove a patient, even if he does not present you with money or goods in gratitude.