Applying for a green card involves more than filling out forms; every applicant must undergo a medical exam to ensure they don’t pose a public health risk. If this exam finds certain health issues, U.S. Citizenship and Immigration Services (USCIS) can deny the green card on medical grounds. The number of applicants found inadmissible each year underscores how important it is to prepare for this step. Even minor medical oversights – like missing a routine vaccination – can lead to delays or denials that upend your immigration plans.
U.S. immigration law, specifically the Immigration and Nationality Act (INA) 1$\S$212(a)(1), lists the health-related conditions that make an applicant “inadmissible,” meaning ineligible for a visa or green card. These grounds include: communicable diseases of public health significance, lack of required vaccinations, certain physical or mental disorders with associated harmful behavior, and drug abuse or addiction. The list of communicable diseases and required vaccinations is determined by the Centers for Disease Control and Prevention (CDC).
At The Chidolue Law Firm, we have helped countless clients navigate the immigration medical exam and overcome health-related hurdles. Our experience has shown that most medical denials can be prevented with the right preparation and guidance. In this article, we break down the common health-related reasons for green card denial and how you can avoid them.
1. Communicable Diseases of Public Health Significance
One major goal of the immigration medical exam is to screen for communicable diseases that could threaten public health. If an applicant has an infectious disease that HHS and CDC classify as a public health concern, they will be deemed inadmissible until the condition is treated or otherwise resolved.
Diseases That Can Trigger Denial:
✔ Tuberculosis (TB) – Active TB in the lungs is highly contagious and a frequent focus of the exam. Applicants must undergo TB testing, such as a skin or blood test, and a chest X-ray if needed. If you are diagnosed with active tuberculosis, you cannot be approved until you complete treatment and are certified TB-free. In FY 2023, hundreds of visa applicants were flagged for communicable diseases like TB.
✔ Sexually Transmissible Infections – Untreated syphilis or gonorrhea are also on the list of communicable diseases that make an applicant inadmissible. The exam includes blood tests for syphilis and, in some cases, gonorrhea. A positive result without proof of treatment will result in denial.
✔ Leprosy (Hansen’s Disease) – Infectious leprosy is another condition that can bar entry until treated. While rare, it is specifically identified in U.S. regulations because of its public health implications.
Diseases like HIV were once on this list as well, but HIV was removed as an inadmissible condition in 2010 under updated CDC rules.
How to Avoid This Issue
📌 Get tested and treated before you apply. If you have a condition like TB or syphilis, complete the full course of treatment and obtain documentation from your doctor. Provide all treatment records to the civil surgeon (the USCIS-approved doctor) at your exam.
For example, if you had TB in the past, bring X-rays and a doctor’s letter showing you were successfully treated. If an active infection is discovered during the exam, expect your application to be delayed, you’ll need to undergo treatment and show the infection is cleared before moving forward. The key is to address any communicable disease early so it doesn’t derail your green card process.
2. Missing Required Vaccinations
U.S. immigration law also requires green card applicants to show proof of certain vaccinations to ensure they won’t introduce vaccine-preventable diseases. An applicant who lacks any required vaccine without a valid exemption will be found inadmissible under INA §212(a)(1)(A)(ii). This is a very common issue in FY 2023, 835 immigrant visa applicants were deemed inadmissible for missing required vaccinations thankfully, most resolved it by getting the shots and continued with their applications.
Vaccines That Are Required:
U.S. authorities follow guidelines from the CDC’s Advisory Committee on Immunization Practices (ACIP). Required vaccines include: measles, mumps, rubella (MMR); polio; tetanus/diphtheria/pertussis; varicella (chickenpox); hepatitis B; influenza (seasonal); and others applicable to the applicant’s age and health. For a period, COVID-19 vaccination was required for all applicants as well.
However, USCIS ended the COVID-19 vaccine requirement in January 2025, so green card applicants no longer need to show proof of COVID vaccination as of that date. Other routine vaccines remain mandatory. USCIS also added a new adult polio booster requirement in 2024, reflecting updated health guidance.
How to Avoid This Issue
📌 Prepare your vaccine records ahead of time. Before your medical exam, gather official records of all vaccinations you have received. Cross-check them against the list of required vaccines (the civil surgeon or panel physician will have the list). If you are missing any doses, get the vaccines before or during your exam. The civil surgeon can administer vaccines during your appointment if needed, make sure to do this rather than leaving any gap.
In rare cases, if you cannot be vaccinated for a medical reason (e.g. allergy or contraindication) or due to sincere religious objections, you must request a waiver of the vaccine requirement. USCIS may grant a waiver for religious or moral objections or if a doctor confirms a vaccine is not medically appropriate. If you plan to seek a waiver, consult an immigration attorney to ensure you properly document your request. In all other cases, the simplest solution is to get up-to-date on all required immunizations so your application isn’t held back by something as preventable as a missing shot.
3. Physical or Mental Disorders with Associated Harmful Behavior
Having a physical or mental health condition alone is not a disqualifier – the concern is if the condition has led to harmful behavior in the past or could in the future. Under INA §212(a)(1)(A)(iii), an applicant is inadmissible if they have a physical or mental disorder and a history of behavior associated with the disorder that posed a threat to the property, safety, or welfare of themselves or others. Even a past disorder can trigger inadmissibility if the harmful behavior is likely to recur. This ground is less black-and-white than diseases or vaccines, but it’s taken seriously.
What Does This Include?
✔ Serious mental health conditions with violence or self-harm: For example, a history of psychotic episodes that led to violent behavior could make an applicant inadmissible. Similarly, if someone had a severe mental illness and attempted suicide or harmed themselves in a manner that endangered others, it might be flagged under this ground.
✔ Patterns of harmful behavior linked to a disorder: A common scenario is alcohol or substance use disorder leading to dangerous behavior. Multiple DUI convictions can trigger a medical review – alcoholism itself isn’t listed as a ground, but if an alcohol use disorder led to reckless driving incidents, it may be considered a harmful behavior associated with a mental/physical disorder. Consular officials often refer applicants with a DUI record for a medical evaluation to see if there’s an underlying substance abuse disorder.
✔ Physical disorders causing erratic behavior: Less common, but if an applicant has a neurological or physical condition, like a brain injury or epilepsy that, when uncontrolled, has led to violence or unsafe behavior, it could fall in this category. The key is the behavioral aspect – the immigration exam isn’t trying to bar people for having illnesses, only if the illness has proven to be a safety risk.
How to Avoid This Issue
📌 Document your health and stability. If you have any history of mental health treatment or a condition that could raise questions, be proactive. Obtain a report from your treating psychiatrist or physician detailing your diagnosis, treatment plan, and that you are well-managed and not a threat to yourself or others.
For instance, if you experienced depression with a suicide attempt years ago, a letter from your doctor stating you have been stable on treatment for say, 5 years, and have no suicidal ideation or dangerous behavior can be crucial. Always be honest with the civil surgeon about your medical history, failure to disclose can be seen as misrepresentation.
However, honesty should be coupled with evidence of your recovery or stability. If an incident occurred in the past (legal issues, rehab, etc.), show proof of rehabilitation (completion of counseling, etc.). Each case is unique, but the goal is to convince immigration officials that your condition won’t pose any danger moving forward. An experienced immigration lawyer can guide you on what records or evaluations will best support your case.
4. Drug Abuse or Addiction
Immigration law has a zero-tolerance stance on drug abuse. If the medical exam finds that an applicant is a current drug abuser or addict, the green card will be denied under INA §212(a)(1)(A)(iv). This provision typically refers to current, habitual use of controlled substances, illegal drugs or misuse of prescription drugs. It’s important to note this ground is separate from criminal drug offenses, you don’t need a drug conviction to be found inadmissible; the determination can be made by the civil surgeon based on your medical history or evidence of substance dependence. In practice, this can be a major hurdle: drug abuse was the #1 health-related inadmissibility finding in FY 2023, with 1,563 immigrant applicants denied visas for substance abuse issues.
How Is Drug Abuse Determined?
The doctor will ask about your past and current drug use. They may review medical records or run a toxicology test if they suspect recent drug use. Common scenarios include applicants who admit to using marijuana or other drugs during the interview or on medical questionnaires. Even if marijuana is legal in some U.S. states, under federal law it’s a controlled substance, any use can flag you as a drug user in the immigration context. If you have a diagnosis of substance use disorder or a recent history of addiction treatment, that can also trigger a Class A finding (meaning inadmissible).
Important:
There is generally no waiver for this ground for immigrant visa or adjustment applicants. Unlike some health issues that might be forgiven with a qualifying relative, drug abuse cannot be legally excused in most cases. In other words, an applicant found to be a current drug abuser has no path around the denial – the only option is to overcome the finding by showing recovery, which usually means time and evidence of sobriety.
How to Avoid This Issue
📌 Stay clean and be cautious with disclosures. The best way to avoid a drug abuse finding is not to use illegal drugs before or during your immigration process. If you have a past history of drug use, you should stop immediately and ideally maintain a period of sobriety before your medical exam. The longer, the better, many civil surgeons will consider you in “remission” if you’ve been off drugs for 12 months or more.
Be mindful when answering questions: never lie to the immigration doctor, but also do not volunteer experimental or past drug use that is not asked about, especially if it was a one-time occurrence years ago. The evaluation is focused on current abuse or addiction. If you did have a substance abuse issue in the past but have overcome it, bring documentation for example, a letter from your rehab program or doctor stating you completed treatment and have been drug-free for X years can help show you are no longer an abuser.
Do not take any controlled substances before your exam (needless to say). Even some prescribed medications (e.g. medical marijuana, certain opioids) could raise red flags, discuss alternatives with your doctor if applicable. Ultimately, if you are honest and no longer engaged in drug abuse, the civil surgeon will not mark you as inadmissible.
However, if you fail a drug test or admit to recent use, your application will likely be denied and no waiver will be available, so this is a critical area to get right. When in doubt, consult an attorney before your medical exam, especially if you have any history of substance issues, to strategize the best path forward.
Are Chronic Illnesses a Problem for Immigration?
Common chronic conditions such as diabetes, heart disease, cancer, obesity, or high blood pressure do not automatically make someone inadmissible. The U.S. immigration medical exam focuses only on communicable diseases, vaccination compliance, disorders linked to harmful behavior, and drug abuse. Many applicants with chronic illnesses are approved every year.
Where chronic illness can matter is under the public charge assessment. Recent State Department guidance allows visa officers to consider whether an applicant’s age or health could lead to reliance on government benefits. An applicant may pass the medical exam but still face refusal if officials believe long-term care costs cannot be covered.
This affects many people. About 39% of recent immigrant adults in the U.S. have at least one chronic condition, and roughly 10% of the global population lives with diabetes. Heart disease remains the world’s leading cause of death (KFF, WHO).
Having a chronic illness alone does not bar immigration. Officers also review income, health insurance, assets, and sponsor support. Showing the ability to manage medical costs can significantly reduce concern.
Why Legal Guidance Is Important
The medical exam and health-related inadmissibility can be one of the trickiest parts of the immigration process. Small mistakes or omissions (like forgetting a vaccine record or not disclosing a prior issue) can lead to delays, Requests for Evidence (RFEs), or even a denial. In more complex cases – for example, you have a past DUI, a managed mental health condition, or a history of drug experimentation – it may not be obvious how to best navigate the exam and the required disclosures. This is where experienced legal guidance is invaluable:
✔ Comprehensive Preparation:
An immigration attorney will ensure you understand exactly what the medical exam will cover and help you gather all necessary medical documents beforehand. We help clients obtain certified vaccination records, doctor letters, and any other evidence so there are no surprises during the exam. Proper preparation can prevent an issue from even arising.
✔ Addressing Inadmissibility Proactively:
If you do have a condition that could cause inadmissibility, we will work on a strategy to overcome it. This might mean securing a Class B designation (non-dangerous condition) from the civil surgeon, applying for a waiver if available, or timing your application to follow completion of treatment, for instance, waiting a few extra months after finishing substance abuse rehab to show sustained recovery. Knowing the waiver options and limitations is crucial, for example, understanding that no waiver exists for drug addiction cases informs how we’d approach a client with a past drug issue, we might advise a longer period of sobriety before applying.
✔ Expert Navigation of Legal Standards: Immigration lawyers are familiar with the technical definitions and standards that immigration and consular officers use. We know what counts as a “mental disorder with harmful behavior” or how the CDC’s technical instructions define a “Class A” condition. This expertise means we can present your case in the best light, emphasizing mitigating factors. For instance, if an applicant had one incident of self-harm years ago, we can argue (with evidence) that it was isolated and is very unlikely to recur, satisfying the legal standard to not be inadmissible. Without legal help, applicants might unknowingly say or submit something that heightens concern instead of alleviating it.
✔ Responding to Problems Quickly: If USCIS issues an RFE or notice of intent to deny over a health issue, having an attorney is critical. We can craft a thorough response, whether it’s obtaining an updated medical report, a specialist’s evaluation, or legal briefs explaining why a denial isn’t warranted. If a denial does happen, we can assess options like appealing or re-filing with better evidence. You won’t have to navigate these high-stakes situations alone or wonder how to convince an immigration officer – we handle it.
In short, legal guidance gives you peace of mind and the best chance of success. At The Chidolue Law Firm, we’ve seen how even a seemingly minor medical issue can spiral into a major immigration hurdle. With professional guidance, you can avoid the pitfalls and tackle any health-related concerns head-on, with a clear plan.
Start Your Immigration Journey with Confidence
📌 Don’t let medical exam issues or other avoidable mistakes stand in the way of your green card approval. Get the expert guidance you need to prepare, prevent delays, and address any problems proactively.
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