When Medicine Meets Migration: How Health Issues Can Delay U.S. Immigration
- Junayd Rehman

- Oct 8
- 5 min read

By Junayd Rehman, Associate Attorney at Waypoint Immigration USA
For many, the U.S. immigration process is a complex journey filled with paperwork, interviews, and background checks. But one critical part that often catches people off guard is the medical examination. This isn't just a routine checkup, it’s a gatekeeper. And sometimes, health conditions can delay, or even derail, an immigration case entirely.
Let’s break down how medical issues, ranging from missing vaccines to pregnancy, tuberculosis, or other treatable conditions, can affect the immigration timeline and what you can do about it to be as proactive as possible.
The Role of the Immigration Medical Exam
Before a person is granted lawful permanent residency (i.e., a green card), they must pass a medical examination conducted by a U.S. Citizenship and Immigration Services (USCIS)-designated civil surgeon (if inside the U.S.) or a panel physician (if abroad).
This is not an optional step. The exam is required by law and designed to make sure the immigrant isn’t inadmissible on public health grounds. It includes:
A physical exam
A mental health evaluation
Testing for certain communicable diseases (like tuberculosis or syphilis)
A review of vaccination records
Screening for drug and alcohol use
Questions about past or present medical conditions
The results are then recorded on Form I-693 and submitted to USCIS as part of the green card process.
Medical Grounds of Inadmissibility
U.S. immigration law lays out four broad medical grounds that can make someone inadmissible (ineligible to enter or stay in the country):
Communicable diseases of public health significance
Failure to show proof of required vaccinations
Physical or mental disorders associated with harmful behavior
Drug abuse or addiction
Let’s look at some of the most common health-related reasons immigration gets delayed and what can be done.
1. Tuberculosis (TB): A Major Cause of Delay
Tuberculosis is a global concern and a high-priority screening item during the medical exam. USCIS and the CDC have very specific guidelines.
If the applicant tests positive on the initial tuberculin skin test (TST) or IGRA blood test, they’re required to undergo a chest X-ray. If the X-ray or further evaluation suggests active TB, the person must complete treatment, which can last six to nine months or longer, before they can proceed with their application.
Even if the TB is latent (meaning you carry the bacteria but aren’t contagious), you may still be asked to undergo treatment or monitoring before being cleared.
Why it delays immigration:
Treatment is time-consuming
Clearance requires documentation from the treating doctor
Immigration authorities must confirm the disease is no longer a public health risk
2. Incomplete Vaccination Records
Immigrants must show proof of certain vaccinations, including but not limited to:
Measles, mumps, and rubella (MMR)
Tetanus and diphtheria toxoids
Pertussis
Hepatitis B
*Note the COVID vaccine is now optional, and Influenza vaccines are only required seasonally.
If you're missing vaccines, the civil surgeon will typically administer them during the medical exam or refer you to another clinic to get them done.
Why it delays immigration:
Some vaccines require multiple doses over weeks or months
COVID-19 vaccination requirements may vary depending on updated public health guidance, and requirements have changed several times
Missing or foreign-language vaccine records can create confusion or require translation/certification
Pro tip: Get your vaccination records translated and certified before your exam and check the CDC website or consult with your lawyer to know which vaccines you’ll need.
The Civil Surgeon might administer a blood test in lieu of requesting records (to determine if you have the right antibodies), but this can also cause delays.
3. Pregnancy: A Special but Complicated Case
Pregnancy itself is not a medical ground of inadmissibility, but it can complicate the medical exam process.
For example:
Some vaccinations (like MMR or varicella) can’t be given during pregnancy
X-rays (for TB screening) might be postponed unless absolutely necessary
Certain TB medications used for treatment may be contraindicated during pregnancy
In such cases, the physician may defer parts of the exam until after the pregnancy or issue a waiver if appropriate. However, this often leads to delays in the green card process unless USCIS accepts a temporary exception.
Why it delays immigration:
Incomplete vaccination series
Delayed TB screening
Risk vs. benefit concerns with medications or procedures
In some cases, USCIS will hold the application until the applicant can complete the exam postpartum.
4. Chronic Conditions That Require Treatment
Conditions like diabetes, hypertension, epilepsy, HIV, or mental health disorders are not automatically disqualifying, but the immigration doctor will assess whether:
The condition is well-managed
It affects the applicant’s ability to be self-supporting
It’s linked to any harmful behavior, especially in mental health cases
For instance, someone with a history of severe psychiatric illness coupled with violent behavior may be flagged as inadmissible. Or someone with untreated substance use disorder may face denial.
Why it delays immigration:
The civil surgeon may require medical records or a clearance letter from your specialist
USCIS may issue a Request for Evidence (RFE) asking for more documentation
In serious cases, a waiver may need to be filed (which can take months)
5. Drug Use or Addiction
This is a big red flag under U.S. immigration law. Even casual marijuana use, legal in many U.S. states, can cause major problems in an immigration context.
If you admit to drug use during the medical exam or in a prior criminal record, you may be classified as a drug abuser or addict and found inadmissible.
Why it delays (or derails) immigration:
A finding of current addiction typically leads to mandatory denial
Past drug use might require counseling records or a psychological evaluation
A waiver of inadmissibility can be hard to get and very time-consuming
Bottom line: Seek legal counsel long before you see a doctor, to determine the immigration effects of any drug issues past or present. You will have to be truthful during the medical exam and on all your paperwork, so you need to understand the consequences early on.
What Can You Do?
Be proactive. Schedule your medical exam early in the process and bring your full medical history.
Talk to your immigration attorney about any known health issues in advance.
Start treatment early if you know you have TB or other conditions that may require time.
Keep detailed records of all treatments, vaccinations, and medical consultations.
Stay in communication with your doctor and your legal team, especially if something unexpected comes up.
Final Thoughts
Medical delays are frustrating but often manageable. The key is not waiting until the last minute and working closely with both your doctor and your immigration attorney to ensure all requirements are met as smoothly as possible.
In the world of immigration, a clean bill of health isn’t just a blessing, it can also be the final green light you need to move forward with your American dream.



Massachusetts General Hospital created MGH Patient Gateway, a secure online portal for patients to access their medical records, schedule appointments, and communicate with doctors. https://mghpatientgateway.org/