1. Short title This Act may be cited as the Reducing Medically Unnecessary Delays in Care Act of 2023 . 2. Definitions In this Act: (1) Adverse determination The term adverse determination means a decision by a medicare administrative contractor, Medicare Advantage plan, or prescription drug plan that administers prior authorization programs under the Medicare program under title XVIII of the Social Security Act or such plan that the health care services furnished or proposed to be furnished to an individual entitled to benefits or enrolled under the Medicare program are not medically necessary, or are experimental or investigational