Single services

Doctor Durrani, MD. Psychiatry|USCIS Form N648

Guide to Form N-648: Medical Certification for Disability Exceptions

Form N-648, also known as the Medical Certification for Disability Exceptions, is used by certain U.S. naturalization applicants who are unable to meet the English language and civics test requirements due to a physical, developmental, or mental impairment.

This form is a crucial part of the naturalization process for those seeking a disability exception, and must be completed by a qualified medical professional.

Who Should File Form N-648?

This form is intended for:

  • Applicants for naturalization (Form N-400) who are medically unable to comply with testing requirements.

  • Individuals whose condition significantly impairs memory, learning, or cognitive function, making it difficult or impossible to learn U.S. history, government facts, or English.

Note: Not all medical conditions qualify. The disability must be severe enough to interfere with the applicant’s ability to meet test requirements.

Who Can Complete Form N-648?

Only the following licensed professionals in the U.S. or its territories can complete and certify Form N-648:

  • Medical Doctors (MD)

  • Doctors of Osteopathy (DO)

  • Clinical Psychologists (Ph.D. or Psy.D.)

These professionals must:

  • Have first-hand knowledge of the applicant’s medical condition.

  • Provide a detailed diagnosis and explanation of how the condition impacts the applicant’s ability to meet the testing standards.

What Information Must Be Included?

The medical professional completing Form N-648 must provide:

  • Diagnosis and description of the medical condition

  • Nature, severity, and expected duration of the disability

  • Explanation of how the disability prevents the applicant from learning or remembering information

  • Supporting documentation (if available), such as medical records, test results, or treatment history

When and How to Submit Form N-648

  • Submit Form N-648 with Form N-400 (Application for Naturalization), or

  • Bring the completed form to the USCIS naturalization interview

USCIS officers will review the form for completeness and may request additional evidence or clarification.

Confidentiality and Privacy

All information provided in Form N-648 is:

  • Confidential and protected by U.S. privacy laws

  • Used solely to evaluate eligibility for the disability testing exception

Stay Up to Date

For the most accurate and current information on Form N-648, including official instructions and submission guidelines, visit the USCIS Form N-648 Page.