N-648Medical Certification for Disability Exceptions
Issued by U.S. Citizenship and Immigration Services (USCIS)
Form N-648 is used to request an exception to the English and/or civics testing requirements for naturalization when an applicant has a physical or developmental disability or mental impairment that prevents them from meeting those requirements. It is completed by a licensed medical professional.
Also known as: Naturalization disability exception form · N648
Key facts
Clinicians fill out · Employees complete · Submitted to regulator
- When it’s used
- Filed together with (or in support of) Form N-400, Application for Naturalization, when an applicant seeks a disability-based exception to the English and/or civics requirements.
- Who fills it out
- A licensed medical doctor, doctor of osteopathy, or licensed clinical psychologist authorized to practice in the United States. The certifying provider does not need to be a USCIS-designated civil surgeon.
- Who signs
- The certifying licensed medical professional. The applicant (or representative) also signs the attestation sections.
- Where it goes
- Submitted to USCIS with Form N-400; the applicant typically brings the original to the naturalization interview.
- Electronic submission
- Filed on paper in support of the N-400 application; not separately e-filed.
Sources & citations
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Form library
USCIS — Form N-648 (official page and download)
Last verified 2026-05-31
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Attribution. Form N-648 is issued and maintained by U.S. Citizenship and Immigration Services. Use only the current edition downloaded directly from USCIS. BlueHive does not modify the underlying government PDF; the file you download is the agency original.
Related forms
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N-648 Medical Certification for Disability Exceptions
Medical certification (Form N-648) used to request a disability-based exception to the naturalization English and civics tests.
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USCIS civil surgeon examination required for green card applications.
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