There are several notable exceptions for when a doctor may not need to receive consent to perform a surgical procedure or to provide treatment. These include: When a physician does not disclose the risks of a certain procedure because these risks are commonly known; When a patient waives the informed consent requirement by stating that they will undergo a procedure despite any risks; When a patient states that they do not want to be informed of the risks; When the patient is unable to provide consent, which is most common in emergency medical situations.