Enacts new GS 130A-215.5 to require health care facilities that perform mammography exams to include a specified notice in the summary of the written exam report if the patient has heterogeneously or extremely dense breasts. Specifies that the statute does not create or impose liability on a health care facility for failing to comply with the requirements before October 1, 2013, create a duty of care or other legal obligation beyond the duty to provide the notice, and require that a notice that is inconsistent with specified provisions of the Mammography Quality Standards Act or regulations adopted pursuant to that act. Amends GS 130A-211 to make a technical change by no longer providing immunity to individuals making a report under GS 130A-210 (which has been repealed) to the central cancer registry. Effective October 1, 2013.