Section 417.427 - Extending MA and Part D program disclosure requirements to section 1876 cost contract plans(a) The procedures and requirements relating to disclosure in § 422.111 and § 423.128 apply to Medicare contracts with HMOs and CMPs under section 1876 of the Act.(b) In applying the provisions of §§ 422.111 and 423.128 , references to part 422 and part 423 of this chapter must be read as references to this part, and references to MA organizations and Part D sponsors as references to HMOs and CMPs.77 FR 22166, Apr. 12, 2012