To amend titles XVIII and XIX of the Social Security Act and title XXVII of the Public Health Service Act to provide for no-cost coverage for annual screening mammography beginning at 30 years of age.

The "Screen to Save Act" (H.R. 10100) amends the Social Security Act and the Public Health Service Act to require Medicare, Medicaid, and private health insurance plans to cover annual screening mammograms for women starting at age 30 without out-of-pocket cost-sharing.

* **Women aged 30 and older** enrolled in Medicare Part B, Medicaid, or private/group health insurance plans. * **Women under age 30** seeking Medicare Part B coverage for screening mammograms. * **Health insurance plans**, including group health plans and individual or group health insurance providers. * **State Medicaid programs** and healthcare providers offering mammography services.

* **Medicare Part B:** Starting January 1, 2027, Medicare Part B is authorized to cover annual screening mammograms for women aged 30 and older (provided at least 11 full months have passed since their previous screening). Medicare is prohibited from paying for screening mammograms for women under age 30. * **Medicaid:** State Medicaid programs must include annual screening mammography for women aged 30 and older as a covered preventive, diagnostic, screening, and rehabilitative service beginning January 1, 2027. * **Private and Group Health Insurance:** Group health plans and health insurance issuers are required to classify annual mammography screenings for women aged 30 and older as a mandatory preventive health service. This requirement takes effect for plan years beginning on or after January 1, 2027.

* **Elimination of Patient Costs:** Health plans, Medicare Part B, and Medicaid are prohibited from charging copayments, coinsurance, deductibles, or other cost-sharing for these covered screening mammograms. * **Medicare Reimbursement Rate:** Medicare Part B will reimburse providers at 100% of the lesser of the actual charge or the standard fee schedule rate. * **State Funding Match:** The federal government will provide an increased Federal Medical Assistance Percentage (FMAP) to state Medicaid programs to support the costs of providing these screening services.

* **Age Exclusion:** Medicare Part B is explicitly barred from covering screening mammograms for women under 30 years of age. * **Frequency Limit:** Medicare Part B coverage requires at least 11 full months to pass between annual screening mammograms. * **Effective Dates:** The mandate applies to Medicare and Medicaid services furnished on or after January 1, 2027, and to private insurance plan years beginning on or after January 1, 2027.

Beginning in 2027, this bill mandates that Medicare Part B, Medicaid, and private health insurance plans cover annual screening mammograms at no cost for women aged 30 and older, while barring Medicare Part B from paying for screening mammograms for women under 30.