Once you turn up for your appointment for the Green Card Medical you will be asked for your medical history which will then be reviewed by the USCIS-approved Civil Surgeon. You will be asked to notify the Surgeon as to the number of times that you have had to stay in hospital, or whether you have ever suffered or are suffering from a severe physical or mental condition, and also will be asked to state the number of times that you have fallen sick or stayed disabled.
The Surgeon will also ask you certain questions about your history – pertaining to drug, alcohol or psychoactive substances use, behavior that was harmful to society in the past, or any mental or psychiatric conditions not documented before.
The Surgeon will also go through chest X-Rays and other treatment documentation to see if there has been an instance of tuberculosis.
WHAT IF YOU ARE SICK AT THE TIME OF THE IMMIGRATION MEDICAL?
If it so happens that you have already fixed up an appointment for the medical exam and you suddenly fall sick then the Civil Surgeon could ask you to go back and only visit the doctor after you get better.
WHAT IF YOUR CASE IS UNUSUAL?
If the Civil Surgeon feels that you have a distinct case you could be referred to another medical doctor for a second opinion.