Section 402(f) of the Act authorizes the Secretary of Labor to establish criteria for determining total disability or death due to pneumoconiosis to be applied in the processing and adjudication of claims filed under Part C of the Act. Section 402(f) further authorizes the Secretary of Labor, in consultation with the National Institute for Occupational Safety and Health, to establish criteria for all appropriate medical tests administered in connection with a claim for benefits. Section 413(b) of the Act authorizes the Secretary of Labor to establish criteria for the techniques used to take chest roentgenograms (x-rays) in connection with a claim for benefits under the Act.
20 C.F.R. §718.1