The bill proposes amendments to the General Laws related to "Accident and Sickness Insurance Policies," "Nonprofit Hospital Service Corporations," "Nonprofit Medical Service Corporations," and "Health Maintenance Organizations" by adding new sections that mandate coverage for diagnostic and supplemental breast examinations without any cost-sharing requirements. The new sections define "cost-sharing requirements" as deductibles, coinsurance, copayments, and any maximum limitations on these out-of-pocket expenses. They also define "diagnostic breast examinations" as medically necessary examinations used to evaluate abnormalities seen or suspected from a screening examination for breast cancer or detected by other means. "Supplemental breast examinations" are defined as medically necessary screenings for breast cancer when no abnormality is seen or suspected, based on personal or family medical history, or other factors that may increase the risk of breast cancer.

The bill specifies that group health plans and health insurance issuers offering group or individual health insurance coverage that provide benefits for screening, supplemental, and diagnostic breast examinations must not impose any cost-sharing requirements on the individuals enrolled in such plans or coverage. This means that patients would not be responsible for any part of the cost for these breast examinations. The act would take effect immediately upon passage. The explanation by the Legislative Council clarifies that the purpose of the act is to prohibit insurance companies from imposing cost-sharing requirements for diagnostic or supplemental breast examinations.