Updated August 3, 2026.

What can make you inadmissible on health grounds when you apply for adjustment of status?

Federal immigration law lists specific health conditions and vaccination gaps that can make an applicant inadmissible. Understanding these categories helps you prepare for the Form I-693 civil surgeon exam and know when to ask about waiver options.

What health categories can trigger inadmissibility?

Immigration law groups health inadmissibility into four broad buckets: communicable diseases of public health significance, lack of required vaccinations, physical or mental disorders that carry a risk of harmful behavior, and drug abuse or addiction. Each bucket has its own rules about what evidence counts and whether a waiver exists.

Think of the categories as four separate checkboxes on the civil surgeon's worksheet. The surgeon reviews your medical history, runs tests for communicable diseases, checks your vaccination records, and asks about mental health and substance use. If any box cannot be cleared, the surgeon notes the finding on Form I-693, and USCIS decides whether the finding makes you inadmissible.

Communicable diseases on the current list include tuberculosis, syphilis, gonorrhea, and Hansen's disease. The list can change when the Centers for Disease Control and Prevention updates its public health guidance. The civil surgeon orders lab tests for these diseases as part of the standard I-693 exam protocol.

The vaccination requirement ties to a separate CDC schedule. You must show proof of immunization against diseases like measles, mumps, rubella, polio, tetanus, diphtheria, pertussis, hepatitis A and B, varicella, influenza, and pneumococcal disease. If you lack records or received vaccines outside the U.S. schedule, the civil surgeon may administer catch-up doses during the exam visit. More detail about the vaccine list appears in our Form I-693 required vaccines explainer.

Physical or mental disorder inadmissibility has two parts: a disorder must exist, and it must be associated with behavior that poses or has posed a threat to your property, safety, or welfare or the property, safety, or welfare of others. A diagnosis alone does not trigger inadmissibility. The civil surgeon looks for documented harmful behavior. This category is narrow in practice because both prongs must be met.

Drug abuse or addiction follows a similar two-part test. Current addiction or a recent history of abuse can be disqualifying. Past use that has been treated and is in sustained remission typically does not meet the statutory standard, but the civil surgeon makes the clinical determination based on interview and records.

How do health waivers work conceptually?

A waiver is a formal request to USCIS to excuse an inadmissibility finding. If the civil surgeon marks a health ground on your I-693, you can apply for a waiver if one exists for that ground. Not every health inadmissibility carries a waiver, but many do.

The most common health waiver is Form I-601, Application for Waiver of Grounds of Inadmissibility. You file it to ask USCIS to overlook certain health findings if you meet the waiver conditions. The conditions vary by inadmissibility category. For example, some communicable disease findings can be waived if you show the disease is in remission or you are following a treatment plan. Vaccination gaps can often be cured by completing the missing doses and updating the I-693 rather than filing a waiver.

Think of the waiver process as a second layer of review. The first layer is the I-693 exam, where the civil surgeon decides whether a health ground exists. If one does, the second layer is your waiver application, where you explain why USCIS should grant your adjustment case despite the finding. The waiver filing includes medical evidence, treatment records, letters from doctors, and sometimes affidavits from family or employers to show you are not a public health risk.

Waiver adjudication is discretionary. Even if you meet the technical waiver requirements, USCIS weighs the positive and negative factors in your case. Strong ties to U.S.-citizen family members, long-term residence, and consistent treatment compliance are examples of positive factors that can support a waiver grant. Serious untreated conditions or repeated noncompliance with medical advice can weigh against you.

Some waiver applications are filed together with the I-485. Others are filed after USCIS issues a notice of intent to deny or an actual denial based on the health ground. Timing depends on the finding and your attorney's strategy. A licensed immigration attorney can review your I-693 results and explain whether a waiver is available, what evidence you need, and when to file.

Not every health finding requires a waiver. Minor conditions that do not meet the statutory definition of inadmissibility can be noted by the civil surgeon without blocking your case. If the civil surgeon leaves the inadmissibility boxes blank and signs the form, USCIS generally accepts the I-693 without further health review. If a box is checked, you and your attorney decide whether to pursue a waiver or withdraw the application.

Waiver processing time varies by service center and the complexity of the medical records. Some waivers are decided in a few months; others take longer if USCIS requests additional evidence. Because waiver law is detailed and case-specific, consulting a licensed immigration attorney is the standard step when you receive an I-693 with a disqualifying finding.

Ready to take the next step? Adjustment of Status Navigator offers a free intake form to help you organize your case details before consulting an attorney. If you are ready to speak with a licensed professional, visit our attorney directory to connect with an immigration lawyer in your area. This post provides general educational information; it is not a substitute for personalized guidance from a licensed immigration attorney.