42 C.F.R. § 1008.51 Exclusivity of OIG advisory opinions.
Title 42 - Public Health
The only method for obtaining a binding advisory opinion regarding any of the subject matters set forth in §1008.5(a) is through the procedures described in this part. No binding advisory opinion, oral or written, has or may be issued by the OIG regarding the specific matters set forth in §1008.5(a) except through written opinions issued in accordance with this part.
Title 42: Public Health
PART 1008—ADVISORY OPINIONS BY THE OIG
Subpart F—Scope and Effect of OIG Advisory Opinions
§ 1008.51 Exclusivity of OIG advisory opinions.

