Payer Enrollment
32 min read
CMS-855 Forms Explained: Which Medicare Enrollment Application Do You Need?
Filing the wrong CMS-855 form restarts your Medicare enrollment from scratch. This guide explains 855I (individual), 855B (group), 855R (reassignment), 855A (institutional), 855S (DMEPOS), and 855O (opt-out) with a decision tree to identify the right form for your situation.
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Super Admin