CFR > Title 42 - Public Health > CHAPTER IV—CENTERS FOR MEDICARE & MEDICAID SERVICES, DEPARTMENT OF HEALTH AND HUMAN SERVICES > SUBCHAPTER B—MEDICARE PROGRAM (parts 405 to 426) > PART 423—VOLUNTARY MEDICARE PRESCRIPTION DRUG BENEFIT > SUBPART K—Application Procedures and Contracts with Part D plan sponsors (§423.500 to §423.520) > 423.516—Prohibition of midyear implementation of significant new regulatory requirements.

423.516—Prohibition of midyear implementation of significant new regulatory requirements.

CMS may not implement, other than at the beginning of a calendar year, regulations under this section that impose new, significant regulatory requirements on a PDP sponsor or a prescription drug plan.