As it is known, an immigration medical exam is needed for adjustment of status – like permanent residency or citizenship in the United States. The main purpose of the medical exam for green card is to rule out any danger to public health and safety when the applicant resides as a citizen or resident in the country.

Medical conditions are classified into “Class A” or “Class B”. Any medical condition that the applicant has, which falls into “Class A” makes him or her inadmissible to the United States.

The following 4 conditions as stated by CDC are those that would make the applicant inadmissible in the United States:

“ individuals who are found to have a communicable disease of public health significance, including, chancroid; gonorrhea; granuloma inguinale; acquired immune deficiency syndrome (HIV/AIDS); Hansen’s disease (infectious leprosy); lymphogranuloma venereum; infectious state syphilis; and infectious tuberculosis (Class A TB)”.”

“Immigrant visa and adjustment of applicants who have not received all of the necessary vaccinations.”

“Individuals who have current physical or mental disorders, with harmful behavior associated with that disorder, or past physical or mental disorders, with associated harmful behavior that is likely to recur or lead to other harmful behavior.”

“Individuals who are found to be drug abusers or drug addicts”. 

Other medical conditions may fall into Class B Category – these could be granted waivers, depending upon the conditions. Diseases, physical or mental abnormalities etc. or even serious, permanent disabilities could fall into Class B and could be granted waiver.
The applicant should not be unduly worried about the exam but should relax.