Chapter 1: Purpose and Background
USCIS balances public health interests against family unity and the needs of the applicant in adjudicating waivers of medical inadmissibility. For this reason, one of the terms and conditions imposed on all applicants with the grant of a waiver is to receive treatment so that the medical condition no longer poses a public health risk.
A medical examination is generally required for all immigrant visa and some nonimmigrant visa applicants, as well as for refugees, and adjustment of status applicants. The purpose of the medical examination is to determine if an applicant has a medical condition(s) that renders him or her inadmissible to the United States.
Generally, applicants establish their admissibility on medical grounds by submitting a Report of Medical Examination and Vaccination Record (Form I-693), or Medical Examination for Immigrant or Refugee Applicant (1991 TB Technical Instructions) (Form DS-2053) or Medical Examination for Immigrant or Refugee Applicant (2007 TB Technical Instructions) (Form DS-2054), and related worksheets.  As of October 1, 2013, panel physicians only use DS-2054.
Civil surgeons or panel physicians complete these documents after the medical examination of the applicant,  See INA 212 and INA 232. certifying the presence or absence of physical or mental conditions that may render the applicant inadmissible. Two types of certifications may indicate to USCIS that the applicant may be inadmissible: a “Class A” and a “Class B” condition.
A Class A condition is conclusive evidence that an applicant is inadmissible on health-related grounds. A Class B condition, unlike a Class A condition, does not make an applicant inadmissible on health-related grounds but may lead the officer to conclude that the applicant is inadmissible on other grounds (such as public charge).  See Volume 8, Admissibility, Part B, Health-Related Grounds of Inadmissibility [8 USCIS-PM B] for more information on Class A and B conditions.
Before 1957, no waiver was available to applicants inadmissible on health-related grounds. The Immigration Act of 1957 created the first waiver provision for those afflicted with tuberculosis who had close relatives in the United States.  See Pub. L. 85-316, 71 Stat. 639 (Sept. 11, 1957). In addition, the 1965 amendments to the INA authorized the waiver of inadmissibility and admission of certain applicants in this category who had close relatives in the United States.  See Pub. L. 89-236, 79 Stat. 911 (Oct. 3, 1965).
The Immigration Act of 1990
See Pub. L. 101-649, 104 Stat. 4978 (Nov. 29, 1990). relaxed the requirements for a familial relationship before a medical waiver could be granted. In addition, over time, other provisions were added to the 1952 Immigration Act that allowed for other waivers of medical grounds depending on the immigration benefit sought.
If an applicant is inadmissible because of a medical condition,  Under INA 212(a)(1)(A), four categories of medical conditions may render an applicant inadmissible: (1) Communicable disease of public health significance (2) For immigrants, failure to show proof of required vaccinations(3) Physical or mental disorder with associated harmful behavior(4) Drug abuse or addictionSee Volume 8, Admissibility, Part B, Health-Related Grounds of Inadmissibility [8 USCIS-PM B] for more information. he or she may have a waiver available. The availability of a waiver depends on the legal provisions governing the immigration benefit the applicant seeks.
This Part C only addresses the processes used for the medical waiver available to persons seeking an immigrant visa or adjustment of status based on a family- or employment-based petition.  Under INA 212(g). All medical grounds of inadmissibility have a corresponding waiver under this section except for inadmissibility based on drug abuse or addiction.  See INA 212(g), which specifically waives INA 212(a)(1)(A)(i)-INA 212(a)(1)(A)(iii) but omits reference to INA 212(a)(1)(A)(iv).
Applicants for other immigration benefits categories, such as refugees and asylees seeking adjustment,  Under INA 209. Legalization or SAW applicants,  Under INA 245A and INA 210. or applicants under other special programs, may have additional or other means to waive grounds of medical inadmissibility, including inadmissibility for drug abuse or addiction.  For example, an asylee or a refugee seeking adjustment of status who is found to be a drug abuser or addict may apply for a waiver of inadmissibility under INA 209(c). INA 209(c) waivers are not addressed in this Part.,  While these other waivers may be briefly discussed in this chapter, more detailed discussion can be found in the program-specific waiver chapters in this volume.
Many of the processes mentioned in this Part C are also applicable to other medical waivers, such as those obtained by asylees or refugees seeking adjustment of status.
D. Legal Authorities
INA 212(a)(1) – Health-Related Grounds
INA 212(g) – Bond and Conditions for Admission of Alien Excludable on Health-Related Grounds
8 CFR 212.7 – Waiver of Certain Grounds of Inadmissibility
E. Forms Used When Applying For a Medical Waiver
Applicants for the immigration benefits listed below may apply for a medical waiver by using the following USCIS forms:  For further information on waivers other than the medical waiver described in this Part, please see the program-specific waiver chapters in this volume.
Applying for Waiver of Health-Related Ground of Inadmissibility
Immigration Benefits Category
Statutory Authority for Waiver
Adjustment of status or immigrant visa
Application for Waiver of Grounds of Inadmissibility (Form I-601) (with the appropriate fee unless waived)
Admission as refugee under INA 207
Application by Refugee for Waiver of Grounds of Excludability (Form I-602) (no fee associated)
Refugee or asylee applying for adjustment of status under INA 209
Legalization under INA 245A
Application for Waiver of Grounds of Inadmissibility Under Sections 245A or 210 of the Immigration and Nationality Act (Form I-690) (with the appropriate fee unless waived)
Special Agricultural Workers (SAW) under INA 210
T and U nonimmigrant visa
Application for Advance Permission to Enter as Nonimmigrant (Form I-192) (with the appropriate fee unless waived)
Other nonimmigrant visa
F. Role of Centers for Disease Control and Prevention (CDC)
Any waiver application to overcome a medical ground of inadmissibility (other than lack of a required vaccination) must be sent to the U.S. Department of Health and Human Services (HHS), Centers for Disease Control and Prevention (CDC) for review before USCIS can determine whether to grant or deny the waiver.
CDC’s favorable response does not constitute a waiver approval. The purpose of CDC’s review is to ensure that
The civil surgeon or panel physician examined, diagnosed, and classified the applicant according to the Technical Instructions; and
The applicant (or person assuming the responsibility on behalf of the applicant) has identified a suitable health care provider in the United States who will provide medical care and treatment for the medical condition if a waiver is granted.
CDC’s response, however, carries significant weight in determining what terms, conditions, or controls should be placed on the waiver, and whether USCIS should approve the waiver.