Form N-648 Medical Waiver: 2026 USCIS Disability Guide

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.

Last reviewed: May 16, 2026.

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.

What USCIS Requires on Form N-648

USCIS Form N-648 is the medical certification used to request a disability-based waiver of the English and civics portions of the naturalization test. USCIS requires Form N-648 to be completed and signed by a licensed medical doctor (M.D.), a doctor of osteopathy (D.O.), or a licensed clinical psychologist authorized to practice in the United States. The medical professional must explain — in plain English a USCIS officer can understand — how the applicant's condition prevents them from learning English or civics well enough to pass the test.

USCIS reviews every N-648 case-by-case. If the form is incomplete, illegible, or uses unexplained medical jargon, USCIS will issue a Request for Evidence (RFE) giving the applicant a chance to fix the issue before any decision is made. The current edition of the form is always available free at uscis.gov/n-648 — do not use older editions and do not pay third-party sites for the PDF.

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.

Form N-648 vs the "N-400 medical exemption" — they are the same thing

People search for many different names for this accommodation: the N-400 medical exemption, the N-400 medical waiver, the citizenship disability waiver, the naturalization disability exception. They are all the same legal mechanism, and they all rely on Form N-648.

Here is the simple version:

N-400 is the application for naturalization itself.
N-648 is the medical certification you attach to the N-400 to request that English and/or civics testing be waived for medical reasons.

There is no separate "medical waiver form" beyond the N-648. If a website, attorney, or USCIS officer refers to the "N-400 medical exemption" or "naturalization disability waiver," they mean filing Form N-648 with your N-400 application.

Note that this is distinct from age-based testing accommodations. USCIS also offers reduced testing requirements for older long-term lawful permanent residents under the 50/20, 55/15, and 65/20 rules. Those are based on age and length of permanent residence, not on a medical condition. You can sometimes combine an age-based exception with Form N-648 — an attorney can advise on which path is simplest for your situation.

Do You Qualify for an N-648 Disability Exception? A Pre-Visit Self-Check

Only a licensed medical professional can complete Form N-648, and only USCIS can approve it — case by case. This checklist will not tell you whether you qualify. What it will do is help you walk into your doctor's and attorney's offices prepared, so you don't waste a visit. Bring it with you.

You may be a candidate for an N-648 exception if all of these are true:

☐ There is a diagnosed physical condition, developmental disability, or mental impairment.
☐ The impairment is medically determinable (shown by accepted clinical or diagnostic methods) and is not based on the direct effects of illegal drug use — which USCIS specifically excludes.
☐ The condition has lasted — or is expected to last — at least 12 months (the standard USCIS applies). Temporary conditions can sometimes qualify; talk to an attorney about timing.
☐ The condition substantially prevents learning English and/or civics — not just makes it harder.
☐ A licensed MD, DO, or clinical psychologist has personally examined you for this condition (not a phone call or a records-only review).
☐ That professional is not a family member and has no stake in your immigration case.
☐ The professional can explain how the condition prevents the specific learning the test requires — connecting the diagnosis to the testing inability, not just naming it.

Bring to your medical appointment: your diagnosis and history, current medications and treatment, and this reminder — the form must explain the functional impact (how the condition blocks learning English or civics), not just the diagnosis.

Bring to your attorney: your medical history for a pre-screen before the form is completed (the single most valuable thing an attorney does here), and ask them to review the finished N-648 before filing.

This checklist is an educational preparation aid, not a determination of eligibility. It does not create an attorney-client or medical relationship. Eligibility is decided by USCIS on a case-by-case basis. Always work with a licensed immigration attorney and a qualified medical professional. Verify current rules at uscis.gov.

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)

Some 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.

Duration matters. USCIS applies a specific standard: the impairment must have lasted, or be expected to last, at least 12 months. Short-term conditions expected to resolve before the interview generally will not support a waiver.

One cause is specifically excluded. A loss of cognitive ability based on the direct effects of illegal drug use will not be considered, regardless of severity.

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.

How to fill out Form N-648, section by section

USCIS publishes the official Form N-648 and a separate set of instructions for Form N-648. Always download the most current version from uscis.gov — older versions are routinely rejected. Below is a plain-language walkthrough of what each part is asking for.

Part 1: Information about the applicant

Filled out by the applicant (or their attorney). This is biographical: full name, A-number, date of birth, contact details. Match the spelling exactly to what is on the N-400 to avoid mismatches.

Part 2: Disability or impairment information

The medical professional fills out this section. It asks for:

The diagnosis (specific medical condition, with the diagnostic code where applicable)
Cause of the condition, where known
How long the condition has existed and whether it is permanent, long-term, or temporary
The functional impact — the most important part. The doctor must explain in plain language how this specific condition prevents the applicant from learning English, civics, or both. A diagnosis on its own is not enough.

Part 3: Tests, treatments, and clinical findings

The medical professional describes what tests or assessments confirmed the diagnosis (cognitive testing, neurological exam, psychological evaluation, etc.) and what treatment has been tried. USCIS uses this to confirm that the diagnosis is well-supported.

Part 4: Doctor's certification

The medical professional certifies under penalty of perjury that they personally examined the applicant, that the information is accurate, and that they meet USCIS's requirements for completing the form (licensed MD, DO, or clinical psychologist). They also include their license number and contact information so USCIS can verify or follow up.

Part 5: Interpreter and preparer information

If an interpreter helped the medical professional communicate with the applicant during the examination, the interpreter signs here. If someone other than the doctor or applicant prepared the form, that person signs as preparer. These signatures are required when applicable — leaving them blank when an interpreter or preparer was involved is grounds for rejection.

Common form-completion mistakes to avoid

Vague functional-impact statements — "patient cannot learn English" is not enough. The doctor must explain why, in concrete terms tied to the condition.
Missing dates — examination date and signature date must be present and recent (typically within 6 months of filing).
Pre-filled or templated language that does not match the specific applicant's history. USCIS officers see thousands of these forms and recognize boilerplate.
Missing supporting records — attaching brief medical records that corroborate the diagnosis strengthens the application even when not strictly required.

Common reasons N-648 forms are denied

USCIS scrutinizes Form N-648 more carefully than almost any other piece of an N-400 application. Most denials fall into a small number of categories:

The functional-impact statement is too vague. A diagnosis without a clear explanation of how the condition prevents learning English or civics is the most common reason for denial. USCIS does not waive testing because someone has a serious condition — it waives testing when the condition specifically prevents the learning required for the test.
The form is signed by an unauthorized professional. Only an MD, DO, or licensed clinical psychologist can sign. Forms signed by nurse practitioners, physician assistants, social workers, therapists, or chiropractors are rejected on sight.
No genuine examining relationship. USCIS requires that the medical professional has actually examined the applicant in connection with the documented disability. Forms based solely on a chart review or phone consultation are rejected.
The medical professional has a conflict of interest — for example, the applicant's spouse, child, or business partner. The professional must be neutral.
The form is outdated or incomplete. Missing dates, missing signatures, blank interpreter sections when an interpreter was used, or use of an old version of the form will trigger a denial.
The condition is presented as temporary when there is no indication the limitation will persist through the testing window. USCIS expects the inability to learn to overlap with when testing would otherwise be required.
The connection between the condition and the test is not explained. Even severe conditions sometimes get rejected if the doctor never explains why this particular condition prevents this particular type of learning.
Inconsistent documentation between the form, the medical records attached, and the applicant's statements at the interview. USCIS officers compare these closely.

If you are unsure whether the form is strong, having an immigration attorney review it before you file is one of the highest-value uses of legal time on a naturalization case.

Why working with an immigration attorney matters

Form N-648 is one of the most carefully scrutinized pieces of an N-400 application — see the dedicated section above on common reasons forms are denied. 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.

Not eligible for the medical exception? If your case doesn't qualify for an N-648 waiver, you'll still need to pass the civics and English tests at your interview. Our step-by-step study guide for the U.S. citizenship test walks through a 4-8 week practice plan — daily routines, audio drills, and the 10-question quiz format USCIS officers actually use.

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.

How long does USCIS take to review Form N-648?

USCIS does not give Form N-648 a separate processing time — it is reviewed as part of the overall N-400 application. The officer evaluates the N-648 at the naturalization interview itself. If the officer needs to follow up with the medical professional or request additional documentation, the case is held until that information is received, which can add several weeks to several months.

Can I appeal a denied N-648?

Form N-648 is not denied independently — it is part of the broader N-400 decision. If the application is denied because the N-648 was not accepted, you can request a hearing on the denial through Form N-336 within 30 days, or you can re-file a new N-400 with a stronger N-648. An immigration attorney can advise on which path makes more sense based on the reason for denial.

Do I need an attorney to file Form N-648?

You are not legally required to have an attorney. However, given the high scrutiny applied to N-648 and the consequences of a rejected form (lost filing fee, potential denial of the application, having to start over), most applicants benefit from an attorney's review. Immigration legal aid organizations often offer reduced-cost or free help for low-income applicants with disability-based applications.

Where can I download Form N-648?

Form N-648 is available as a free PDF directly from USCIS at uscis.gov/n-648. The form is published in English only. Download the most current edition before each use — USCIS periodically revises the form, and submitting an outdated edition can cause your N-400 to be returned. Do not pay any third-party site that charges for the form itself; the USCIS PDF is always free.

Is there a Spanish version of Form N-648 (formulario N-648)?

No. USCIS publishes Form N-648 in English only — there is no official Spanish version (no formulario N-648). However, USCIS provides a Spanish-language instruction sheet (Instrucciones N-648) that explains what each section asks. The form itself must be completed in English by the licensed medical professional who signs it.

What if USCIS sends my N-648 back asking for more information?

USCIS may issue a Request for Evidence (RFE) if your N-648 is incomplete, illegible, or missing a required attachment. An RFE is not a denial — it is a chance to fix the issue. The notice will list exactly what is needed and give a response deadline (usually 30–87 days). Respond by the deadline with the requested information and a copy of the original N-648. Missing the deadline can lead to the N-400 being denied on incomplete-evidence grounds, so calendar it immediately.

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.