§418.2145. How do we determine your income-related monthly adjustment amount if the IRS does not provide information about your modified adjusted gross income? — Inbound Citations

(b) Sections 418.2101 through 418.2150 describe what information about your modified adjusted gross income we will use to determine if you are required to pay an income-related monthly adjustment amount. In these sections, we also describe how the income-related monthly adjustment amount will affect your total Medicare prescription drug coverage premium.