I notice that too. I picked the first option of "All Immigrant or Diversity Visas" and select No for "
Did the National Visa Center (NVC) or Kentucky Consular Center (KCC) schedule your immigrant or diversity visa interview appointment for an upcoming date?" and select Yes for "Have you recently received communication from Mumbai Consulate to reschedule your appointment under this category?" and scheduled an appointment. This will help in getting medical done.
Will revisit before the actual appointment, if we need to schedule only through the other option under "Embassy/Consulate Appointments".