I imagine that a person does not need to report a medical procedure performed without consent to the police, but that there is a process in the health care community that allows them to file such a complaint against a doctor.
If consent has been given, it's different. Generally, when a person has surgery, he or she signs a consent form for the medical team to save their life or perform certain medical procedures in the event of a problem. Obviously, childbirth is not the same as this type of operation. No prior consent is given for sterilization.