A Class A finding for a mental disorder or substance use disorder on Form I-693 can feel like the end of the road for a green card application. It is not. USCIS built a specific waiver pathway, Form I-601, for exactly this situation, and understanding how that pathway connects to the civil surgeon’s original findings can make the difference between panic and a workable plan.
Why Mental Health and Substance Findings Are Treated Differently
Most Class A health-related findings on the I-693 are binary: a communicable disease of public health significance is either present or it is not. Mental health and substance use findings work differently, because the exam is not just checking for a diagnosis. Under the civil surgeon’s assessment framework, following the CDC’s Technical Instructions and DSM-5-TR diagnostic criteria, a diagnosis alone rarely triggers inadmissibility on its own. What matters is whether the disorder has produced harmful behavior, whether that behavior is likely to recur, and, for substances listed under the Controlled Substances Act, whether the disorder is active or in documented remission. A civil surgeon does not just check a box, they build a clinical narrative, and that narrative is what a waiver, when needed, has to respond to.
When a Waiver Actually Becomes Necessary
Not every mental health or substance-related notation on the I-693 requires a waiver. If the civil surgeon documents a Class B condition, meaning a diagnosed disorder without associated harmful behavior, or a history of harmful behavior judged unlikely to recur, the applicant is not inadmissible on health grounds at all. The waiver conversation only starts once a Class A condition is entered: a current disorder with harmful behavior, a past disorder whose harmful behavior is assessed as likely to recur, or, for substances covered by the Controlled Substances Act, a substance use disorder that has not reached full remission. That last category is treated more strictly than the others. A Controlled Substances Act-related disorder is a Class A finding regardless of severity and does not require proof of harmful behavior to trigger inadmissibility, which surprises many applicants who assume a single isolated incident years ago should not carry the same weight as an active condition.
What the I-601 Application Needs to Establish
Form I-601 is the mechanism for requesting a waiver of a health-related Class A finding tied to a mental disorder with harmful behavior, or a non-Controlled Substances Act substance use disorder with harmful behavior. The application does not ask USCIS to overturn the civil surgeon’s diagnosis. It asks USCIS to accept that the applicant can be admitted despite it, typically supported by evidence such as a treatment plan from a qualified provider, documentation of the specific DSM criteria that were or were not met, and evidence addressing the likelihood of recurrence. Because the civil surgeon’s original notes are the foundation the waiver builds on, incomplete or vague documentation at the exam stage tends to surface again during the waiver review, often as a request for further evidence. This is one of the clearest reasons the initial I-693 exam is worth taking seriously rather than treating as a formality.
Class A vs. Class B: A Quick Comparison
| Finding | Class A (Health-Related Inadmissibility) | Class B (Not Inadmissible on Health Grounds) |
|---|---|---|
| Mental disorder | Current, with harmful behavior; or history of harmful behavior likely to recur | No associated harmful behavior; or history judged unlikely to recur |
| Non-CSA substance use disorder (e.g., alcohol) | Current or recurring harmful behavior present | No associated harmful behavior |
| CSA-listed substance use disorder | Active disorder, any severity, harmful behavior not required | Full remission, per DSM criteria |
| Waiver path | Form I-601 may be available for mental-disorder and non-CSA findings | No waiver needed |
Working With Your Civil Surgeon Before Filing
Applicants sometimes try to manage a mental health or substance history by saying as little as possible during the exam. That approach tends to backfire, because a thin record gives a civil surgeon less to work with when assessing remission or recurrence risk, which can push a borderline case toward Class A rather than Class B. A more effective approach is bringing whatever documentation already exists, such as records from a treating provider, dates of any relevant history, and current treatment status, so the civil surgeon can make a fully informed determination the first time. If a referral to a mental health specialist is warranted, that specialist’s report becomes part of the I-693 record and should be requested and completed before the exam packet is finalized, since submitting an incomplete packet is itself a common cause of delay.
Conclusion
A Class A finding for a mental health or substance use disorder on Form I-693 changes the path forward, but it does not close it. The I-601 waiver exists precisely because USCIS’s framework distinguishes between a diagnosis and a pattern of harmful behavior, and between an active disorder and one in documented remission. Applicants navigating this part of the process are best served by treating the civil surgeon exam as the foundation of their case, not a hurdle to get past quickly, since the clarity of that initial documentation carries directly into any waiver that follows.