In addition to the good faith estimate requirements set forth in the Public Health Service Act, 42 U.S.C §2799B-6, the No Surprises Act, on request of a patient made before or during treatment, a hospital shall provide to the patient a written estimate of the total charges for the hospital services, procedures, and supplies that reasonably are expected to be provided and billed to the patient by the hospital. The written estimate shall state clearly that it is only an estimate and actual charges could vary. A hospital may restrict the availability of a written estimate to normal business office hours. The provisions set forth in §A—C of this regulation do not apply to emergency services.