The advanced search function of the Medicare coverage database (MCD) application will be removed April 30th, as announced in a release from CMS.
 
All of the features related to the advanced search were incorporated into the new search function, released in September 2020.
 
CMS recommends switching to the new advanced search now and reminds that bookmarks to advanced-search.aspx and search-results.aspx will no longer work after April 30th.