This bill, titled the "Improving Medicaid Precision and Cancer Test Act of 2025," aims to enhance cancer care access for Medicaid beneficiaries. It achieves this by amending Title XIX of the Social Security Act to explicitly require coverage for lung cancer biomarker testing under the Medicaid program. Specifically, the legislation modifies sections 1902(a)(10)(A) and 1905(a) of the Act to include lung cancer biomarker testing as a mandatory covered benefit. This new requirement for Medicaid coverage will become effective on January 1, 2027 , ensuring that eligible individuals have access to these advanced diagnostic tests.