What are the rules for reopening a decision by an administrative law judge of the Office of Medicare Hearings and Appeals (OMHA) or by the Medicare Appeals Council (MAC)?

The rules in 42 CFR 405.980 through 405.986 govern reopenings of decisions by an administrative law judge of the OMHA and decisions by the MAC. A decision by an administrative law judge of the OMHA may be reopened by the administrative law judge or by the MAC. A decision by the MAC may be reopened only by the MAC.