Who Is Required to Have a Chest X-Ray

A chest X-ray is a mandatory component of the immigration medical exam for all applicants age 15 and older. There is no upper age limit — seniors in their 70s, 80s, or older are required to have a chest X-ray as part of their exam. The requirement applies regardless of your health history or whether you have had a chest X-ray recently.

The chest X-ray requirement is established by the Centers for Disease Control and Prevention (CDC) and USCIS as part of the standard medical examination protocol for green card applicants. It cannot be waived based on age alone, though there are specific exceptions for pregnant applicants, who may defer the X-ray until after delivery.

What the Chest X-Ray Screens For

The primary purpose of the chest X-ray in the immigration medical exam is to screen for tuberculosis (TB). TB is a communicable disease of public health significance and is one of the specific medical grounds of inadmissibility under U.S. immigration law. The chest X-ray allows the civil surgeon to identify signs of active or prior TB infection in the lungs.

In addition to TB, the chest X-ray may reveal other pulmonary findings such as nodules, masses, pleural effusions, or signs of prior infections. While these findings are not themselves grounds of inadmissibility, they may prompt the civil surgeon to request additional evaluation or documentation from your treating physician.

It is important to understand that the civil surgeon is not performing a comprehensive diagnostic workup. The chest X-ray is interpreted in the context of the immigration medical exam, with a specific focus on communicable disease screening. Incidental findings will be noted and communicated to you, but they do not automatically affect your immigration case.

Radiation Exposure: What Seniors Should Know

Many seniors have concerns about radiation exposure from X-rays, particularly if they have had multiple X-rays over their lifetime or are undergoing cancer treatment. The radiation dose from a single chest X-ray is very low — approximately 0.1 millisieverts (mSv), which is roughly equivalent to 10 days of natural background radiation. This level of exposure is considered safe for adults of all ages.

For comparison, a CT scan of the chest delivers approximately 7 mSv — about 70 times more radiation than a standard chest X-ray. The immigration medical exam uses a standard two-view chest X-ray (posteroanterior and lateral views), not a CT scan.

If you have concerns about radiation exposure due to a specific medical condition or recent radiation therapy, discuss this with the civil surgeon at the time of your appointment. In rare circumstances, the civil surgeon may consult with your treating physician, but the chest X-ray requirement generally cannot be waived on the basis of radiation concerns alone.

How the Chest X-Ray Is Performed

The chest X-ray is performed on-site at our clinic. The procedure takes only a few minutes. You will be asked to stand in front of the X-ray machine, remove any clothing or jewelry from your upper body, and hold your breath briefly while the image is taken. Two views are typically taken — one from the front (posteroanterior) and one from the side (lateral).

For seniors with mobility limitations or difficulty standing for extended periods, our staff will accommodate your needs. If you use a wheelchair or have difficulty standing, please let us know when scheduling your appointment so we can make appropriate arrangements. In some cases, a seated X-ray can be performed, though standing images are preferred for diagnostic quality.

What Happens If an Abnormality Is Found

If the chest X-ray shows an abnormality, the civil surgeon will review the findings and determine the appropriate next steps. The most common scenario is a finding consistent with prior TB infection — known as a latent TB infection (LTBI) or old healed TB. This is relatively common in seniors who grew up in countries with higher TB prevalence. A finding of prior TB does not automatically make you inadmissible, but it does require further evaluation.

If the X-ray suggests active TB disease, the civil surgeon is required to refer you for further evaluation and treatment before the immigration medical exam can be completed. Active TB is a communicable disease of public health significance and is a ground of inadmissibility. However, once TB is treated and you are no longer infectious, the inadmissibility finding can be resolved.

For other incidental findings — such as a pulmonary nodule or pleural thickening — the civil surgeon may request records from your treating physician or recommend follow-up imaging. These findings do not necessarily delay your immigration case, but the civil surgeon must document them appropriately on Form I-693.

Seniors with Prior Chest X-Rays

If you have had a chest X-ray recently — for example, as part of a routine physical or a prior medical evaluation — you may wonder whether that X-ray can be used in place of a new one. In general, the immigration medical exam requires a new chest X-ray taken at the time of the exam. Prior X-rays cannot substitute for the required exam X-ray.

However, prior chest X-rays can be very helpful as comparison images. If you have prior chest X-ray films or reports, bring them to your appointment. The civil surgeon can use them to compare with the new X-ray and to provide context for any findings. For example, a stable pulmonary nodule that has been present for many years is less concerning than a new or growing nodule, and prior images help establish that stability.