Form N-648: The Medical Disability Exception to the English and Civics Tests
Form N-648 lets some applicants with a disability skip the English or civics test. Who qualifies, who signs it, when to file it and how to avoid scams.
By the Citizo Team6 min read

In short
- Form N-648 asks USCIS for an exception to the English test, the civics test or both because of a physical or developmental disability or a mental impairment.
- The condition must have lasted, or be expected to last, at least 12 months, and it must stop you from meeting the requirement even with accommodations.
- Only a licensed medical doctor, doctor of osteopathy or clinical psychologist licensed in the United States can certify it.
- There is no USCIS filing fee for Form N-648. Send it with your Form N-400.
- Old age or not knowing how to read are not, by themselves, valid reasons.
In this guide
Exception or accommodation?
These are two different things.
| Accommodation | Medical disability exception (N-648) | |
|---|---|---|
| What it does | Changes how you take the test | Excuses you from English, civics or both |
| Examples | Sign language interpreter, extra time, interview at another location | You do not take the part of the test that the form covers |
| How to ask | Online at uscis.gov/accommodations or through the USCIS Contact Center | Form N-648, completed by an authorized medical professional |
If you can pass the tests with an accommodation, you do not need Form N-648. You can ask for both if you need both: for example, a person who is deaf may ask for a sign language interpreter and also file Form N-648.
Who qualifies
According to the USCIS Policy Manual, the disability or impairment must:
- be "medically determinable," which means it can be shown with accepted clinical or laboratory methods;
- have lasted, or be expected to last, at least 12 months; and
- stop you from meeting the English requirement, the civics requirement or both, even with reasonable accommodations.
The same diagnosis can affect two people in different ways. One person may only need more time; another may need the exception.
How to file Form N-648, step by step
- Download the current edition from uscis.gov/n-648. On October 29, 2026 the edition date was 09/25/24.
- See an authorized medical professional. A licensed medical doctor, doctor of osteopathy or clinical psychologist must examine you, in person or, where state law allows, by real-time telehealth.
- The professional completes and certifies the form (Parts 1 to 3). If an interpreter helped in person during the exam, the interpreter fills out and signs Part 5, the interpreter section. If the interpreter helped by phone or video, the medical professional completes Part 5 instead.
- You complete and sign your part: the Applicant's (Patient's) Attestation/Release of Information. A legal guardian, surrogate or designated representative may sign for you in some cases.
- File it with your Form N-400. USCIS may not consider a form that was completed more than 180 days before you file the N-400. If you file online, you can upload it as evidence.
- Supporting records are optional. The medical professional may attach diagnostic reports or medical records that support the form.
What if I file it late?
The Policy Manual says Form N-648 should be filed with the N-400. USCIS may accept a late form if you show extenuating circumstances, for example a condition that started or got worse after you filed. The officer will ask why it was late. Filing several different forms from different doctors can raise questions if they do not match.
At the interview
The officer reviews your form. If the officer finds it sufficient, you do not take the part of the test it covers, and the interview continues. If the form says you cannot meet the English speaking requirement, you may use an interpreter during the interview.
If the officer finds the form insufficient, you take the tests. If you do not pass, the officer explains the problems with the form in writing and schedules a second test 60 to 90 days later. You can bring new medical evidence to that appointment. If questions about the form must be asked, the officer asks them in your preferred language, with an interpreter. You still answer questions about your application; to prepare, read citizenship interview questions.
Watch out for scams
USCIS warns about fraud with Form N-648 and lists court cases against people who sold false certifications. Remember:
- USCIS does not charge a fee for Form N-648. A doctor may charge for the exam and for completing forms.
- You can check a professional's license with your state medical board.
- Never sign a form with false information.
If you can study, Citizo can help
Some people with a health condition can still pass with time and practice, or with an accommodation. Citizo lets you study at your own pace with flashcards that play the question and answer in English as many times as you want. If you are 65 or older with 20 years as a permanent resident, see also the 65/20 rule, which shortens the list to 20 questions. For a simple routine, read how to study for the citizenship test.
Frequently asked questions
Can my family doctor fill out Form N-648?
Only if they are a licensed medical doctor or doctor of osteopathy, or a licensed clinical psychologist, licensed to practice in the United States.
Does Form N-648 excuse me from the whole interview?
No. It covers the English requirement, the civics requirement or both. You still go to the interview unless USCIS tells you otherwise.
Can I file Form N-648 after I file my N-400?
USCIS may accept it if you show extenuating circumstances. It is better to file both together.
Is advanced age enough for Form N-648?
No. The instructions say illiteracy and advanced age alone are not valid reasons. Look at the 50/20, 55/15 and 65/20 rules instead.
About this guide
This guide is general information, not legal advice. For questions about your own case, talk to an immigration attorney or an accredited representative. Citizo is an independent app. It is not part of the U.S. government and has no connection to USCIS. The official information is at uscis.gov. Written by the Citizo Team. Facts checked on October 29, 2026.
Sources
- USCIS, N-648, Medical Certification for Disability Exceptionschecked October 29, 2026
- USCIS, Instructions for Form N-648 (09/25/24)checked October 29, 2026
- USCIS Policy Manual, Volume 12, Part E, Chapter 3, Medical Certification for Disability Exceptionschecked October 29, 2026
- USCIS, Exceptions and Accommodationschecked October 29, 2026