Amends the Illinois Insurance Code. In a provision concerning coverage for mammograms, provides that if a woman's physician has ordered the patient to receive breast tomosynthesis because it has been determined that high breast density will make low-dose mammography inaccurate or ineffective, the insurer shall not require the physician to order an additional low-dose mammography as a precondition to breast tomosynthesis, nor shall an insurer require the patient to receive a low-dose mammography as a precondition to breast tomosynthesis. Provides that if the results of a woman's first 2-dimensional mammogram screening determine that the patient has high breast density, coverage of breast tomosynthesis shall be provided at no cost to the insured, regardless of whether the breast tomosynthesis and 2-dimensional mammogram occurs within the same calendar year, coverage year, or 365-day period.