20 C.F.R. § 416.919f

Type of purchased examinations.

        We will purchase only the specific examinations and tests we need to make a determination in your claim. For example, we will not authorize a comprehensive medical examination when the only evidence we need is a special test, such as an X-ray, blood studies, or an electrocardiogram.

[56 FR 36965, Aug. 1, 1991]

Official source