所有移民签证和一些非移民签证以及难民和身份申请人的调整都需要进行体检。体检的目的是确定个人是否有在移民前需要注意的健康状况。体检必须由美国政府批准的医生进行。在美国，医生必须是美国海关和移民服务局指定的“民间外科医生”。在国外，考试必须由美国国务院指定的医生进行，该医师也称为“小组医师”。要在美国寻找经批准的医生，请访问myUSCIS寻找医生或致电1-800-375-5283联系全国客户服务中心。要在美国境外寻找经批准的医生，请访问美国国务院网站。小组医生和民间外科医生将移民的医疗条件分为“A类”或“B类”。 A类医疗条件使移民不能入境美国以下情况归类为A类：肺结核，梅毒，淋病，汉森病（麻风病），霍乱，白喉，鼠疫，脊髓灰质炎，天花，黄热病，病毒性出血热，严重急性呼吸综合征，以及由新型或再次出现的流感（大流行性流感）引起的流感。所有移民，包括移民签证和申请人调整的移民，都必须接受所有必需的疫苗接种。这些可包括以下疫苗可预防的疾病：腮腺炎，麻疹，风疹，脊髓灰质炎，破伤风和白喉类毒素，百日咳，B型流感嗜血杆菌，轮状病毒，甲型肝炎，乙型肝炎，脑膜炎球菌病，水痘，流感和肺炎球菌肺炎。入院时其他不合格因素包括患有当前身体或精神障碍，与该疾病相关的有害行为，或过去身体或精神障碍，可能复发或导致其他有害行为的相关有害行为的个人以及被发现是药物滥用者或吸毒成瘾者其他医疗状况可归类为B类。这些疾病包括身体或精神异常，疾病（如艾滋病毒，2010年从A类解密）或严重/永久性残疾。 B类医疗条件可以获得豁免。美国公民和移民服务局将提供政府批准进行移民医疗检查的医生或诊所名单。申请人应尽快预约，以免延误案件处理。填写并提交表格I-693外国人体格检查寻求调整身份到预约。一些领事馆要求护照式照片进行体检。检查领事馆是否需要照片作为支持材料。根据医生办公室，诊所或USCIS指示包中的指示付款。为预约带来免疫或疫苗接种证明。如果需要进行免疫接种，医生将提供所需的说明以及可以获得的地方，通常是当地的公共卫生部门。患有慢性病的个人应携带医疗记录副本到检查中，以证明病情目前正在接受治疗并得到控制。
A medical exam is required for all immigrant visas and some nonimmigrant visas, as well as for refugees and adjustment of status applicants. The purpose of the medical exam is to determine if individuals have health conditions that need attention prior to immigration. The medical exam must be performed by a physician approved by the U.S. government. In the U.S., the physician must be a U.S. Customs and Immigration Services-designated “civil surgeon.” Abroad, the exam must be conducted by a physician designated by the U.S. Department of State, also known as a “panel physician.” To find an approved doctor in the U.S., go to the myUSCIS Find a Doctor or call the National Customer Service Center at 1-800-375-5283. To find an approved doctor outside of the U.S., go to the Department of State website. Panel physicians and civil surgeons will classify an immigrant’s medical conditions into “Class A” or “Class B.” Class A medical conditions render an immigrant inadmissible to the U.S. The following situations are classified as Class A: tuberculosis, syphilis, gonorrhea, Hansen’s Disease (leprosy), cholera, diphtheria, plague, polio, smallpox, yellow fever, viral hemorrhagic fevers, severe acute respiratory syndromes, and influenza caused by novel or re-emergent influenza (pandemic flu). All immigrants, including those on an immigrant visa and an adjustment of applicants, must receive all of the required vaccinations. Those may include the following vaccine-preventable diseases: mumps, measles, rubella, polio, tetanus and diphtheria toxoids, pertussis, Haemophilus influenzae type B, rotavirus, hepatitis A, hepatitis B, meningococcal disease, varicella, influenza and pneumococcal pneumonia. Other disqualifying factors from admission include 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 and those individuals who are found to be drug abusers or drug addicts Other medical conditions may be categorized as Class B. These include physical or mental abnormalities, diseases (like HIV, which was declassified from Class A in 2010) or serious/permanent disabilities. Waivers may be granted for Class B medical conditions. The U.S. Citizenship and Immigration Services will provide a list of doctors or clinics that the government has approved to perform immigration medical exams. An applicant should make an appointment as soon as possible so as not to delay case processing. Complete and bring form I-693 Medical Examination of Aliens Seeking Adjustment of Status to the appointment. Some consulates require passport-style photos for the medical exam. Check to see if the consulate requires photos as supporting materials. Bring payment as indicated by the doctor’s office, clinic or as directed in the instruction packet from USCIS. Bring proof of immunizations or vaccinations to the appointment. If immunizations are needed, the doctor will provide instructions on which are required and where they can be acquired, which is usually the local public health department. Individuals who have a chronic medical problem should bring copies of medical records to the exam to show that the condition is currently being treated and is under control.