Form HA-504: How to Complete Hearing Acknowledgment

Form HA-504, officially titled Acknowledgment of Notice of Hearing, is the form you must complete and return to the Social Security Administration to confirm that you received your hearing notice and will attend your scheduled hearing. Under 20 CFR 404.938(c), you must return this acknowledgment within 5 business days of receipt, or within 30 calendar days of receiving your 75-day advance notice, confirming your attendance, format preference, and contact information.

Receiving your Notice of Hearing is a major milestone in your Social Security Disability Insurance appeal. After waiting through months of backlogs following initial and reconsideration denials, your claim has finally been scheduled before an Administrative Law Judge (ALJ) in the Office of Hearings Operations (OHO). Along with the official notice detailing the date, time, and location of your hearing, you will find Form HA-504 enclosed in the packet.

Ignoring Form HA-504 can severely jeopardize your disability claim. Adjudicators use this document to manage courtroom dockets, coordinate expert witness schedules, and verify attendance. Understanding how to properly complete, sign, and submit Form HA-504 ensures your hearing proceeds without procedural delays or the risk of administrative dismissal.

Legal Authority and the 75-Day Advance Notice Rule

The procedural requirements governing disability hearings are set forth in 20 CFR 404.938 and Hearings, Appeals, and Litigation Law Manual (HALLEX) I-2-3-15. Under 20 CFR 404.938(a), the Social Security Administration is legally required to mail your Notice of Hearing at least 75 calendar days before the scheduled hearing date, unless you have signed a written waiver agreeing to shorter advance notice.

This generous 75-day advance notice rule gives you and your appointed representative sufficient time to review your electronic exhibit folder, obtain updated medical records, submit pre-hearing briefs, and secure opinion letters from your treating physicians under 20 CFR 404.1520c.

Form HA-504 functions as the formal receipt that establishes due process. Under 20 CFR 404.938(c), the agency requires you to acknowledge receipt of the notice. Returning the completed form confirms that you are aware of the hearing date, understand where or how it will take place, and intend to participate.

Deadlines for Returning Form HA-504

Federal regulations establish strict timelines for returning your hearing acknowledgment:

Under 20 CFR 404.938(c), you must return the acknowledgment form within 5 business days after receiving it, or at least 30 calendar days before the date of the hearing. HALLEX I-2-3-15 instructs hearing office staff to track these returns closely.

If you received your notice 75 days in advance, you should complete and return Form HA-504 immediately upon opening the packet. Returning the form promptly avoids administrative follow-up calls and prevents the hearing office from questioning your commitment to pursuing the claim.

Section-by-Section Guide to Completing Form HA-504

Form HA-504 is typically a one-page or two-page document with clearly labeled blocks. Completing each part accurately prevents processing errors at the hearing office.

Identifying Information and Docket Details

The top portion of Form HA-504 contains pre-printed administrative details generated by the hearing office: - Claimant Name and Social Security Number: Verify that your name and nine-digit SSN match your Social Security card and prior denial notices. - Hearing Date and Time: Double-check the scheduled time, paying close attention to time zones if your hearing is conducted by video or telephone with an out-of-region judge. - Hearing Location or Modality: The notice indicates whether your hearing is scheduled for an in-person appearance at a physical OHO hearing office, a video teleconference, or a telephone appearance.

If any identifying details are incorrect, contact the hearing office clerk immediately using the phone number printed on the accompanying Notice of Hearing.

Confirming Attendance or Requesting a Postponement

The central section of Form HA-504 contains two primary check-boxes regarding your appearance:

The first option states: "I will be present at the time and place shown on the Notice of Hearing." Checking this box confirms that you accept the scheduled date, time, and format, and will participate in full.

The second option states: "I cannot be present at the time and place shown on the Notice of Hearing." If you cannot attend due to an unavoidable conflict, you must check this box and immediately provide a detailed written explanation in the space provided.

Under 20 CFR 404.936(e), you may object to the scheduled time and place of your hearing. However, you must demonstrate good cause under 20 CFR 404.936(f). Acceptable reasons include scheduled hospitalization, emergency medical treatment, a death in your immediate family, or a serious scheduling conflict of your representative that cannot be resolved. Vague explanations like being busy will result in your request for a postponement being denied.

Verifying Hearing Modality and Format Rights

Under 20 CFR 404.936(c), hearings before an ALJ may be held in person, by video teleconference (VTC), or by telephone. Under 20 CFR 404.936(d), you retain the right to object to appearing by video or telephone and request an in-person hearing within 30 days of receiving the notice. If you accept a remote hearing, Form HA-504 asks you to verify the specific telephone number or email address where hearing access details should be sent.

Representative and Witness Information

If you are represented, indicate your advocate's name and contact details. Under 20 CFR 404.1707, Form SSA-1696 appoints your representative, but listing them here confirms their attendance. If you plan to present witnesses regarding your daily functional limitations, list their contact information under 20 CFR 404.950.

Language Interpreters and Accommodations

If you require a language interpreter or accommodations for a disability, indicate your need on Form HA-504. Under HALLEX I-2-1-70, the agency provides qualified foreign language and sign language interpreters free of charge, provided staff receive timely notice to arrange services.

What Happens If You Do Not Return Form HA-504?

Failing to return Form HA-504 does not automatically cancel your hearing, but it initiates aggressive administrative tracking under HALLEX I-2-3-20.

When an acknowledgment is not returned within the prescribed window, hearing office personnel will attempt to contact you and your representative by telephone. Under HALLEX I-2-3-20(B), staff make documented calls to verify receipt of the hearing notice and confirm your attendance. If staff cannot reach you by phone, they may send a reminder notice.

If you fail to return Form HA-504 and subsequently fail to appear at your scheduled hearing, the consequences are severe:

Under 20 CFR 404.957(b) and HALLEX I-2-4-25, the administrative law judge may dismiss your request for a hearing without conducting proceedings. The ALJ will typically issue an Order to Show Cause for Failure to Appear, giving you 10 calendar days to establish good cause under 20 CFR 404.957(b)(1).

If you cannot establish good cause for missing the hearing, the ALJ issues an order of dismissal. Under 20 CFR 404.959, a dismissal is final and binding, terminating your appeal and leaving the prior reconsideration denial in effect. You lose your accrued retroactive back pay and must start over with a new application.

How to Submit Form HA-504 to the Hearing Office

You should return your completed Form HA-504 using a reliable, trackable method:

• Enclosed Business Reply Envelope: The hearing office packet often includes a postage-paid return envelope addressed to your local Office of Hearings Operations.
• Direct Fax to the Hearing Office: Every OHO hearing office maintains dedicated incoming fax numbers. Faxing your completed form provides an electronic transmission confirmation receipt showing the date and time delivered.
• Certified Mail with Return Receipt: If mailing via USPS, sending the form by Certified Mail with Return Receipt Requested provides proof of timely delivery.
• Electronic Submission by Your Representative: If you are represented, your attorney can upload Form HA-504 directly into your electronic folder using Appointed Representative Services (ARS) or Electronic Records Express (ERE), ensuring instant docketing.

Keeping a signed copy of Form HA-504 along with proof of transmission protects your hearing rights against clerical loss.

Frequently Asked Questions

What is Form HA-504 used for in an SSDI appeal? Form HA-504, the Acknowledgment of Notice of Hearing, is the required form used under 20 CFR 404.938(c) to confirm that you received your hearing notice, will attend your hearing, and verify your contact details.

What is the deadline to return Form HA-504? Under 20 CFR 404.938(c) and HALLEX I-2-3-15, you must sign and return Form HA-504 within 5 days of receipt, or within 30 days of receiving your 75-day advance notice of hearing.

What happens if I fail to return Form HA-504? If you do not return Form HA-504, the hearing office will attempt follow-up contact, and if you fail to appear at the scheduled hearing without good cause, the administrative law judge may dismiss your hearing request under 20 CFR 404.957(b).

This article provides general information about Social Security Disability Insurance rules and is not legal advice. Program regulations, appeal procedures, and administrative guidelines change over time, and all figures reflect standards applicable in 2026. Consult a qualified representative or contact the Social Security Administration directly for guidance regarding your individual claim.