A quasar is believed to be a supermassive black hole surrounded by an accretion disk. An accretion disk is a flat, disk-like structure of gas that rapidly spirals around a larger object, like a black hole, a new star, a white dwarf, etc.
Category: Special Enrollment Periods SEP. In certain situations, people with Medicare may be eligible for a Special Enrollment Period (SEP) allowing them to join a Medicare Advantage plan or Medicare Part D prescription drug plan, or switch to a different Medicare plan during the plan year.
Medicare / Medicaid Information. 1  Medicare State Operations Manual - Publication 100-07 Appendix A - Survey Protocol, Regulations, and Interpretive Guidelines for Hospitals (PDF, 1.9MB) Appendix AA - Psychiatric Hospitals â Interpretive Guidelines and Survey Procedures (PDF, 237KB) Federal Regulations - Conditions of Participation for Hospitals - 42 CFR 482.