CFR›Title 42›Chapter IV›Part 417›Subpart O›42 CFR 417.542 Citation42 CFR 417.542CorpusDaily eCFRDisplayed edition2026-04-15Last updated2026-04-15 § 417.542 Reinsurance costs.Reinsurance costs are not allowable. Previous 417.540 § 417.540 Enrollment costs. Next 417.544 § 417.544 Physicians' services furnished directly by the HMO or CMP.