Chapter 1 - Purpose and Background

A. Purpose

The medical grounds of inadmissibility, the medical examination of foreign nationals, and the vaccinations administered to foreign nationals are designed to protect the health of the United States population. The immigration medical examination, the resulting medical examination report, and the vaccination record provide the information USCIS uses to determine if a foreign national meets the health-related standards for admissibility.

Four basic medical conditions may make an applicant inadmissible on health-related grounds:

  • Communicable disease of public health significance,

  • An immigrant’s failure to show proof of required vaccinations,

  • Physical or mental disorder with associated harmful behavior, and

  • Drug abuse or addiction.

B. Background

Public health concerns have been reflected in U.S. immigration law since the Immigration Act of 1882. [1] Among others, “persons suffering from a loathsome or a dangerous contagious disease” were not allowed to enter the United States. [2] In 1990, Congress revised and consolidated all of the grounds of inadmissibility. It narrowed health-related grounds of inadmissibility to include only applicants with communicable diseases, physical or mental disorders with associated harmful behavior, or those with drug abuse or addiction problems. [3] 

As of 1996, Congress requires all immigrant visa and adjustment of status applicants to establish that they have been vaccinated against certain vaccine-preventable diseases. [4] 

C. Role of the Department of Health and Human Services (HHS)

Because medical knowledge and public health concerns can and do change over time, Congress gave the Department of Health and Human Services (HHS) the authority to designate by regulations which conditions make a person inadmissible on health-related grounds. 

The HHS component charged with defining these medical conditions is the Centers for Disease Control and Prevention (CDC). CDC’s responsibilities include:

  • Publishing regulations addressing health-related conditions that render an applicant inadmissible;

  • Establishing the medical examination requirements in its Technical Instructions for Medical Examination of Aliens (Technical Instructions) that are binding on civil surgeons in the United States, panel physicians overseas, USCIS officers, and State Departmentconsular officers; [5] 

  • Responding to medical questions that officers, civil surgeons, and panel physicians may have based on the Technical Instructions; [6] and

  • Advising USCIS on the adjudication of medical waivers.

D. Role of the Department of Homeland Security (DHS)

Congress authorizes the Department of Homeland Security (DHS) to determine a foreign national’s admissibility to the United States, which includes determinations based on health reasons. [7] DHS must follow HHS regulations and instructions when determining whether an applicant is inadmissible on health-related grounds. [8] 

Congress also empowers DHS to designate qualified physicians as civil surgeons who conduct medical examinations of foreign nationals physically present in the United States. [9] 

E. Making a Medical Inadmissibility Determination

To make a medical inadmissibility determination, the officer should follow the steps outlined below: 

Overview of Process of Making a Medical Inadmissibility Determination

Step of Adjudication

Where can I find 
​on this step? 

Step 1: Is the applicant subject to health-related grounds of inadmissibility or is there another reason that requires the applicant to undergo a medical examination? 

Chapter 3, Applicability of Medical Examinationand Vaccination Requirement [8 USCIS-PM B.3]

Step 2: If required, has the applicant been medically examined by the appropriate physician and is the appropriate medical documentation in the file? 

Chapter 3, Applicability of Medical Examinationand Vaccination Requirement [8 USCIS-PM B.3]

Step 3: Did the civil surgeon properly complete the then-current version of the Form I-693 and is the Form I-693 valid at the time of adjudication?

Chapter 4, Review of Medical Examination Documentation [8 USCIS-PM B.4] through Chapter 10, Other Medical Conditions [8 USCIS-PM B.10]

Step 4: Is the applicant inadmissible based on health-related grounds?

Chapter 11, Inadmissibility Determination [8 USCIS-PM B.11]

Step 5: Is the applicant inadmissible based on grounds other than health-related grounds, as evidenced by the medical documentation?

Chapter 11, Inadmissibility Determination, Section D, Other Grounds of Inadmissibility [8 USCIS-PM B.11(D)]

F. Legal Authorities

  • INA 212(a)(1) – Health-related grounds

  • INA 221(d) – Physical examination

  • INA 2328 CFR 232 – Detention of aliens for physical and mental examination

  • 42 U.S.C. 252 – Medical examination of aliens

  • 42 CFR 34 – Medical examination of aliens

  • Technical Instructions for Civil Surgeons (Technical Instructions), and updates [10] 


1. [^] See the Immigration Act of 1882, 22 Stat. 214 (August 3, 1882).

2. [^] See the Immigration Act of 1891, 26 Stat. 1084 (March 3, 1891). 

3. [^] See the Immigration Act of 1990 (IMMACT 90), Pub. L. 101-649 (November 29, 1990).

4. [^] See the Illegal Immigration Reform and Immigrant Responsibility Act of 1996 (IIRIRA), Division C of Pub. L. 104-208 (September 30, 1996). See INA 212(a)(1)(A)(ii).

5. [^] Officers and designated physicians must obtain the Technical Instructions from CDC’s website at Updates to the Technical Instructions must also be followed.

6. [^] CDC can be reached at Officers should identify themselves as an immigration officer in the e-mail. This e-mail address is not for inquiries from the public. It is only for inquiries from immigration officers and civil surgeons. Inquiries from the public should be submitted to CDC INFO at

7. [^] See INA 212(a).

8. [^] See INA 212(a)(1)(A).

9. [^] See INA 232.

10. [^] Available online at

42 CFR 34 - Medical examination of aliens

42 U.S.C. 252 - Medical examination of aliens

INA 212(a)(1) - Health-related grounds

INA 221(d) - Physical examination

INA 232, 8 CFR 232 - Detention of aliens for physical and mental examination


No appendices available at this time.

POLICY ALERT - Validity of Report of Medical Examination and Vaccination Record (Form I-693)

October 16, 2018

U.S. Citizenship and Immigration Services (USCIS) is updating policy guidance in Volume 8, Part B of the USCIS Policy Manual regarding the period of time during which a Form I-693 submitted in support of a related immigration benefits application is considered valid.



POLICY ALERT - Definition of Certain Classes of Medical Conditions and Other Updates Relating to Health-Related Grounds of Inadmissibility

November 02, 2016

U.S. Citizenship and Immigration Services (USCIS) is updating guidance regarding health-related grounds of inadmissibility in accordance with the U.S. Department of Health and Human Services (HHS) rulemaking updating Title 42 of the Code of Federal Regulations, part 34 (42 CFR 34).



POLICY ALERT - Health-Related Grounds of Inadmissibility and Waivers

January 28, 2014

U.S. Citizenship and Immigration Services (USCIS) is issuing guidance in the USCIS Policy Manual on the health-related grounds of inadmissibility under INA 212(a)(1) and corresponding waivers under INA 212(g).


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