A doctor who harms a patient through bad practice or who makes a mistake can still be sued.
Bad doctoring is still bad doctoring and a mistake that courses damage, remains a mistake.
The difference will be in cases where an innovative treatment is agreed to and tried and where the consequences cannot be known in advance.
As long as the doctor concerned and the doctors with whom he or she consults and the patient recognise that and sign up to that, then the innovating doctor cannot be sued.
But the Bill does not protect the doctor from poor performance.