42 C.F.R. § 415.180 Teaching setting requirements for the interpretation of diagnostic radiology and other diagnostic tests.
Title 42 - Public Health
(a) General rule. Physician fee schedule payment is made for the interpretation of diagnostic radiology and other diagnostic tests if the interpretation is performed or reviewed by a physician other than a resident. (b) Documentation. Documentation must indicate that the physician personally performed the interpretation or reviewed the resident's interpretation with the resident.
Title 42: Public Health
PART 415—SERVICES FURNISHED BY PHYSICIANS IN PROVIDERS, SUPERVISING PHYSICIANS IN TEACHING SETTINGS, AND RESIDENTS IN CERTAIN SETTINGS
Subpart D—Physician Services in Teaching Settings
§ 415.180 Teaching setting requirements for the interpretation of diagnostic radiology and other diagnostic tests.

