By MyCitizenPrep Editorial Team
Important disclaimer. This article is for educational purposes only and is not legal or medical advice. Form N-648 must be completed by a licensed medical professional. Eligibility decisions are made by USCIS on a case-by-case basis. Always work with a licensed immigration attorney and a qualified medical professional when applying for a disability-based waiver. Verify current forms and rules at uscis.gov.
If a physical condition, developmental disability, or mental impairment prevents you from learning English or civics well enough to pass the citizenship test, you may be able to skip the English and civics portions of the test entirely. The mechanism for this exception is Form N-648 — a medical certification that a licensed medical professional fills out on your behalf and submits with your Form N-400 application.
This is a real, important accommodation that USCIS makes available to applicants who cannot reasonably meet the standard test requirements due to a qualifying condition. It is also one of the most carefully reviewed parts of an application. Getting it right requires the cooperation of a qualified medical professional and, in most cases, an immigration attorney.
Quick reference
- What it does: Waives the English (reading, writing, speaking) and/or civics test portions
- Who completes it: A licensed medical doctor, doctor of osteopathy, or licensed clinical psychologist
- What is required: Detailed medical certification of a condition that prevents learning English or civics
- When to file: Submit Form N-648 with your N-400 application package
- Best practice: Work with both a qualified medical professional and an immigration attorney
What Form N-648 actually does
Form N-648 — formally called the Medical Certification for Disability Exceptions — is a USCIS form that documents why an applicant cannot fulfill the English-language and/or civics testing requirements of the naturalization process due to a medical condition.
When approved, the form lets you skip:
- The English test (reading, writing, and the spoken English assessment) — if your condition prevents you from learning English
- The civics test (the 128-question civics list) — if your condition prevents you from learning civics
- Both — if your condition prevents both
You still complete the rest of the naturalization process: you file the N-400, pay the fee, attend the biometrics appointment, sit for the interview, and take the oath at the ceremony. Form N-648 only modifies the test portion of the interview.
Who can fill out Form N-648
USCIS requires the form to be completed by one of three types of licensed medical professionals:
- A medical doctor (MD) licensed to practice in the United States
- A doctor of osteopathy (DO) licensed to practice in the United States
- A licensed clinical psychologist licensed to practice in the United States
The professional must have personally examined you in connection with the disability described on the form. They cannot fill out the form based on a phone call or a one-time review of records — there must be an examining relationship.
The professional also cannot be a family member or anyone with a personal stake in your immigration case. USCIS may follow up with the professional directly if they have questions about the form.
If you do not currently have a relationship with a qualified medical professional who can document your condition, an immigration attorney can often refer you to one. Some immigration legal aid organizations also maintain referral lists of medical professionals familiar with the N-648 process.
What conditions might qualify
Form N-648 is meant for conditions that substantially prevent you from learning the English language or civics material — not for conditions that simply make learning harder. The medical professional must explain how the specific condition causes the inability to learn.
Examples of conditions that may qualify, depending on severity and how they affect a specific applicant:
- Significant cognitive impairments (such as advanced dementia or severe intellectual disability)
- Severe traumatic brain injury that has impacted memory and language acquisition
- Significant developmental disabilities
- Serious mental health conditions documented over time (severe PTSD, major depressive disorder with cognitive symptoms, severe schizophrenia, and similar)
- Stroke with lasting language or cognitive impacts (aphasia, for example)
- Advanced neurodegenerative diseases (such as Parkinson's, ALS, or Alzheimer's at advanced stages)
Two important things to know:
Severity matters. A diagnosis alone is not enough. The medical professional must explain how the condition prevents learning English or civics — for example, "Severe Alzheimer's disease has impaired the patient's short-term memory to the point that they cannot retain new information from session to session, including the vocabulary and civics content required for the test."
Causation matters. The link between the condition and the inability to learn must be clear. USCIS rejects forms that diagnose a condition without explaining the testing-related impact.
If you are unsure whether a condition qualifies, an immigration attorney can review the medical history with you and a medical professional before the form is completed. This is one of the most useful things an attorney can do — it prevents wasted effort on an N-648 that USCIS will likely reject.
How Form N-648 fits into the application process
Here is the typical workflow:
- Eligibility review with attorney. Before doing anything, talk with a licensed immigration attorney about whether the disability accommodation is the right path for the applicant. The attorney also screens for general N-400 eligibility (residence, good moral character, etc.).
- Medical examination and form completion. A qualified medical professional examines the applicant and completes Form N-648, including a detailed narrative about the condition and how it prevents learning English or civics.
- N-400 filing. The completed N-648 is submitted with the N-400 application package, the filing fee, and supporting documents.
- Biometrics appointment. Standard for all applicants — fingerprints and photos taken at a USCIS Application Support Center.
- Interview. The applicant attends the interview. The officer reviews the N-400 and the N-648. If the N-648 is approved, the testing portion is waived. If the officer has questions about the N-648, they may follow up with the medical professional or schedule a follow-up appointment.
- Decision. USCIS issues a decision. If the application is approved, the applicant attends the oath ceremony.
The interview officer evaluates the N-648 — they are not bound to accept it without review. Officers have specific training on N-648 and will probe if the form is unclear, if the connection between the condition and the testing inability is weak, or if the form is poorly filled out.
What the medical professional needs to document
A strong N-648 includes specifics, not generalities. The form has multiple sections, and the medical professional needs to address all of them clearly. The most important parts:
- The diagnosis — using standard medical terminology and current diagnostic codes
- The cause — what is known about the origin of the condition
- The duration — how long the condition has existed and whether it is permanent or temporary
- The treatment — what treatment, if any, has been tried
- The functional impact — specifically how the condition prevents the applicant from learning English, civics, or both
That last point is the one most applicants underestimate. USCIS does not waive testing because someone has a serious medical condition; it waives testing when the condition prevents the specific learning required for the test. The medical professional must connect the dots.
If the form is being completed by a doctor who does not regularly fill out N-648 forms, sharing examples of well-completed forms (your immigration attorney can usually provide these) helps the doctor write a stronger narrative.
Why working with an immigration attorney matters
Form N-648 is one of the most carefully scrutinized pieces of an N-400 application. Common reasons N-648 forms get rejected:
- The narrative is too vague (just a diagnosis without a functional impact statement)
- The connection between the condition and the testing inability is not made
- The form is signed by someone outside the three approved professional categories
- The medical professional is a relative or has a conflict of interest
- The form is filled out without an actual examining relationship
A licensed immigration attorney experienced with N-648 can:
- Screen the medical history before the form is completed to confirm a likely-qualifying condition
- Connect the applicant with medical professionals familiar with the N-648 process
- Review the completed form before filing
- Represent the applicant at the interview and address officer questions
- Appeal a denied application if needed
Filing without legal representation is possible, but the rejection rate is higher and the consequences of rejection — losing the filing fee, having to start over, or facing a denied application — are significant. For most disability-based applications, the cost of an attorney is a small fraction of the total stakes.
What if Form N-648 is denied
If USCIS does not accept the N-648 at the interview, several things can happen:
- Officer requests clarification. The officer may ask for more documentation or follow up with the medical professional. The application is held while this happens.
- Applicant takes the standard test. If the N-648 is rejected outright, the applicant is expected to take the English and civics tests on the spot — which, if they cannot, may lead to a denied application.
- Application is denied. A denial does not mean the applicant cannot apply again. After a denial, the applicant can file a new N-400 with a stronger N-648 (or pursue an appeal).
This is another reason to prepare carefully and work with an attorney. Applicants who arrive at the interview without a back-up plan if the N-648 is questioned are in a difficult position.
What to bring to the interview
If you are applying with an N-648, bring everything any applicant would bring, plus a few extras:
- Your appointment notice
- Your green card (permanent resident card)
- A government-issued photo ID
- A copy of the filed N-648 (USCIS already has the original, but having a copy helps)
- Your medical records related to the condition documented on the N-648 (in case the officer asks)
- Contact information for the medical professional who completed the N-648
- Your immigration attorney, if you have one — they can attend the interview with you using Form G-28
- A trusted family member or caretaker, if the applicant cannot communicate independently
If the applicant cannot communicate due to the condition, USCIS allows a designated representative to assist at the interview. The attorney handles the legal coordination of who can represent and how.
Frequently Asked Questions
Does Form N-648 cost anything?
There is no separate filing fee for Form N-648 — it is submitted alongside the N-400, which has its own filing fee. However, the medical examination and the time the medical professional spends completing the form usually involve a fee from the medical professional. Some immigration legal aid organizations may help cover those costs for low-income applicants.
Can I file Form N-648 after I have already filed my N-400?
Yes, you can submit Form N-648 at the interview if you did not file it with the original application, but it is much better to file it together. Filing late can create delays and may signal to the officer that the disability claim is being added as an afterthought. Talk to an attorney before deciding.
What if my doctor will not fill out Form N-648?
Some doctors are unfamiliar with the form or are uncomfortable completing immigration paperwork. If your regular doctor will not fill it out, ask for a referral to a colleague who has experience with N-648. Immigration legal aid organizations also keep lists of medical professionals who handle these forms regularly.
Can a nurse practitioner or physician assistant fill out Form N-648?
No. USCIS requires the form to be signed by an MD, DO, or licensed clinical psychologist. Nurse practitioners, physician assistants, social workers, and therapists who are not licensed clinical psychologists do not qualify, regardless of how well they know the patient.
What if my condition is temporary?
Form N-648 can be used for temporary conditions, but USCIS expects the duration of the condition to overlap with the testing requirement. If the condition is expected to resolve before the interview, USCIS may decline to waive testing on a temporary basis. Discuss with your attorney whether to file now or wait.
Will USCIS contact my doctor directly?
Sometimes. If the form is unclear or if the officer has questions, they may contact the medical professional who signed it for clarification. Make sure your doctor is aware that they may receive a follow-up call.
If I qualify for an English exception (50/20 or 55/15) and have a disability, do I still need Form N-648?
Maybe. If you qualify for the 50/20 or 55/15 English exceptions, the English test is already waived. You would only need Form N-648 if you also need the civics test waived. Talk to an attorney about which path to pursue — sometimes it is simpler to use one exception rather than combining multiple.
Quick takeaways
- Form N-648 lets applicants with qualifying medical conditions skip the English and/or civics test portions of naturalization.
- The form must be completed by a licensed MD, DO, or clinical psychologist who has personally examined the applicant.
- The form must explain not just the diagnosis but how the condition specifically prevents learning English or civics.
- Work with an immigration attorney before filing — N-648 is one of the most carefully reviewed parts of an N-400 application.
- File Form N-648 with the N-400 application package, not at the interview, whenever possible.
- USCIS may follow up with the medical professional. Make sure they are reachable.
- A denial is not the end — you can refile with a stronger N-648, or appeal with an attorney's help.