H4 Visa stamping delhi consulate

Hi, I havetaken an appointment for H4B Visa stamping for myself on 22nd March’21 in Delhi. I got the appointment as Delhi has started taking stamping appointments starting 1st Feb with limited capacity.
Does anyone know that those appointments are Emergency appointments only? Because the embassy website doesn’t say “emergency appointments only” specifically.
Do I need any medical test before going for H4 stamping.
Note: My wife and kid are in US.