Yes, you can keep a Social Security disability or benefits appeal alive after a claimant dies — but only if you file Form HA-510, the Social Security Administration’s Notice Regarding Substitution of Party Upon Death of Claimant, with the Office of Hearings Operations. The form tells the Administrative Law Judge that you are stepping into the deceased claimant’s shoes, and it is the procedural key that prevents the appeal from being dismissed.
When a claimant dies during a pending appeal, the case does not automatically end. Federal rules in 20 C.F.R. § 404.957(c)(4) and the SSA’s HALLEX I-2-1-50 let a qualified survivor or party with a financial interest substitute in. If no one steps in within a reasonable time, the Administrative Law Judge can dismiss the request for hearing, and the underpayment that the deceased earned through years of waiting can vanish.
This matters because the SSA’s most recent published data show a national average hearing wait time of about 9 months and a hearing backlog that still tops half a million pending cases, and roughly 8,000 disability claimants die each year while waiting for a decision according to figures cited in the Government Accountability Office’s report. Your timely HA-510 filing is what turns that long wait into a paid claim.
Here is what you will learn in this guide:
- 📝 How to fill out every field of Form HA-510, line by line, with sample answers
- ⚖️ Which survivors qualify to substitute under 20 C.F.R. § 404.503(b) and § 416.542(b)
- 🧾 How HA-510 differs across SSDI, SSI, retirement, survivor, and Medicare appeals
- 🚫 The seven most damaging mistakes that cause dismissals and missed underpayments
- 🔁 How HA-510 interacts with Appeals Council review and federal court substitution under Rule 25
What Form HA-510 Actually Is
Form HA-510 is the SSA’s official notice that a new party is taking over a pending hearing-level appeal because the original claimant has died. The form sits inside the Office of Hearings Operations workflow and is processed by the assigned Administrative Law Judge or hearing office staff. It is short, but its legal effect is large because it converts a dead claim into a live claim for purposes of due process and payment.
The form is anchored in the SSA’s procedural manual at HALLEX I-2-1-50, which tells judges how to handle a claimant’s death during a pending request for hearing. It is also tied to the underpayment rules in the POMS GN 02301.030 instructions for Title II claims. Together these authorities decide who may substitute, in what order, and what they may collect.
The consequence of not filing HA-510 is severe. Under 20 C.F.R. § 404.957 the ALJ may dismiss the request for hearing if no qualified party substitutes within a reasonable time, and any underpayment that would have been paid disappears as if the appeal never happened. A common misconception is that the surviving spouse automatically inherits the appeal, but the SSA requires an affirmative written notice on HA-510 before the substitution takes effect.
When You Need to File HA-510
You need HA-510 anytime a claimant dies after filing a request for hearing on form HA-501 but before the ALJ issues a final decision. The form is also used at the post-hearing stage if the claimant dies before the decision is mailed. If the death happens before the request for hearing is filed, you generally use the underpayment claim form SSA-1724 instead, not HA-510.
You do not file HA-510 with the Appeals Council. At that level the substituting party files a written request that mirrors HA-510’s content, governed by HALLEX I-3-1-5. In federal district court the substitution is governed by Federal Rule of Civil Procedure 25(a) and requires a formal motion within 90 days of a suggestion of death.
A real example: Maria Alvarez files a hearing request in March, dies in July, and her husband Carlos wants to continue the appeal. Carlos files HA-510 in August, names himself as the substituting party, and the ALJ holds the hearing in October. Without that August filing, the ALJ would have dismissed the case under § 404.957 and Carlos would have lost the back pay Maria earned.
Who May Substitute as a Party
For Title II disability, retirement, and survivor claims, 20 C.F.R. § 404.503(b) sets the priority order for the underpayment, and that same order generally controls who may substitute on HA-510. The order is the surviving spouse who was living with the deceased or entitled to a benefit on the same record, then children entitled on the same record, then parents entitled on the same record, then the legal representative of the estate.
For Title XVI SSI claims, 20 C.F.R. § 416.542(b) is much narrower. Only an eligible surviving spouse who was living with the recipient at death, or parents of a deceased disabled or blind child who were living with the child, may receive the SSI underpayment. Estates do not collect SSI underpayments, which is the most misunderstood rule in this entire area.
The consequence of getting the priority wrong is that the wrong person signs HA-510, the ALJ holds a hearing for someone with no standing, and SSA later refuses to pay. A common misconception is that any adult child can step in for an SSI parent — under § 416.542(b), an adult child who did not live with the parent gets nothing, and the underpayment is forfeited to the United States Treasury.
Line-by-Line Walkthrough of Form HA-510
The form is one page with a small number of fields, but each field has a legal meaning. Read the SSA’s instructions before you write anything, and do not leave any required field blank because incomplete forms are returned by the hearing office. The walkthrough below tracks the current version of the form as published on the SSA forms page.
The form’s heading identifies the hearing office and the docket. Get those entries from the most recent notice of hearing or acknowledgment letter the deceased received. Using a stale docket number causes the form to be misrouted and adds weeks to your timeline.
The body of the form has identifying information for the deceased claimant, identifying information for the substituting party, the relationship to the deceased, the date of death, and a signature block. Each entry has consequences if filled incorrectly, which we cover next.
Heading: Hearing Office and Docket Information
At the top, you enter the hearing office address and the claim’s docket or BNC number exactly as it appears on the latest SSA notice. The docket links your HA-510 to the right electronic file in the eFolder system. A typo here can cause the form to land in the wrong office, and the ALJ may dismiss the case before anyone notices.
The consequence of a misrouted form is procedural default. If the ALJ sets a deadline for substitution and you missed it because the form went to the wrong office, the dismissal can still stand under HALLEX I-2-4-15. A common misconception is that SSA will fix typos quietly — they will not, and the burden is on the substituting party to confirm receipt.
A real example: James O’Connor writes the wrong hearing office city on HA-510 because he copied an old notice from 2024. The form sits in a different region for six weeks. The ALJ assigned to the live case dismisses the appeal for lack of substitution, and James must file a request to vacate the dismissal under HALLEX I-2-4-25.
Field 1: Deceased Claimant’s Name and SSN
You enter the deceased’s full legal name as it appears on the Social Security card and the wage earner’s Social Security number. For a child or auxiliary claim, you also list the wage earner’s SSN even if the deceased is not the wage earner. The SSN is the primary key SSA uses to link the underpayment record.
The consequence of an incorrect SSN is that SSA’s Master Beneficiary Record will not match, and any favorable decision cannot be effectuated for payment. A common misconception is that the claim number on the notice is enough — for HA-510 you must list the deceased’s own SSN, not just the BNC.
A real example: Linda Park lists her late husband’s claim number but forgets his SSN. Payment processing stalls for four months while the payment center reconciles the file. Adding the SSN at the start would have avoided the delay.
Field 2: Date of Death
You enter the deceased’s exact date of death, taken from the death certificate. SSA cross-checks this against the Death Master File and against state vital records reported under Section 205(r) of the Act. A wrong date here can flag the form as fraudulent.
The consequence is that the hearing office may put the case on hold while it verifies the date. If you cannot supply a death certificate quickly, attach an interim funeral home statement and follow up with the certified copy. A common misconception is that the SSA already knows the date because of automatic reporting — it often does, but you must still list it on HA-510.
A real example: Robert Chen lists “July 2025” instead of an exact date. The ALJ’s staff returns the form, and Robert loses three weeks. The certified death certificate showed July 14, 2025, which is what the form required.
Field 3: Substituting Party’s Identifying Information
You list the substituting party’s full legal name, mailing address, telephone number, and SSN. The SSA needs the SSN to verify the substituting party’s relationship through its own records and to issue a Form 1099 if the underpayment is paid. The address must be a valid mailing address because the notice of decision goes there.
The consequence of leaving the SSN blank is delay. SSA will return the form or ask for the SSN under POMS GN 00203.020. A common misconception is that the address can be a P.O. box only — SSA prefers a street address but accepts a P.O. box if that is the only mail option.
Field 4: Relationship to the Deceased
You select the relationship — spouse, child, parent, legal representative of the estate, or other party with a financial interest. This is the field that drives standing under § 404.503(b) and § 416.542(b). Pick the highest priority relationship that fits because the SSA pays under that hierarchy.
The consequence of marking the wrong box is that SSA pays a higher-priority survivor instead of you, even if you won the hearing. A common misconception is that “executor” beats “spouse” — it does not for Title II underpayments, where the spouse comes first under § 404.503(b)(1).
A real example: Patricia Hayes checks “estate representative” because she is the executor, but she is also the surviving spouse. SSA pays the estate, then probate distributes funds with extra costs. Checking “spouse” first would have routed the payment directly to her.
Field 5: Statement of Intent and Financial Interest
The form asks you to confirm that you wish to be made a party to the proceedings and that you have a financial interest in the outcome. This is the legal hook that gives the ALJ authority to substitute you under HALLEX I-2-1-50. Without that statement, the ALJ cannot find that you have standing.
The consequence of leaving this unchecked is dismissal. The ALJ may issue an order to show cause before dismissing, but the burden is on you to respond. A common misconception is that filing the form alone proves intent — the SSA wants the explicit statement on the form itself.
Signature, Date, and Witness Block
You sign in ink, date the form, and include a witness if you are signing by mark rather than handwriting. Electronic signatures are accepted for represented claimants when filed through ERE by the appointed representative. The signature is what binds the substituting party to the proceeding.
The consequence of an unsigned form is that it is treated as never filed, which means the dismissal clock keeps running. A common misconception is that a typed name is a signature — under HALLEX I-1-1-15, an unsigned paper form is a nullity.
A real example: David Brooks emails an unsigned PDF to the hearing office. Two months pass. The ALJ dismisses the appeal, and David must reopen under § 404.988, which carries strict good-cause limits.
Three Real-World Scenarios
The next tables walk through the three most common HA-510 fact patterns. Each shows the exact action the substituting party takes and the legal consequence the action produces.
Scenario 1: Surviving Spouse Continues an SSDI Appeal
| Step the Spouse Takes | Legal Result |
|---|---|
| Files HA-510 within 30 days of death, marks “spouse” in Field 4 | Substitution accepted under HALLEX I-2-1-50 |
| Attaches certified death certificate | Date of death verified, hearing not delayed |
| Confirms living-with status under § 404.347 | Top priority for underpayment under § 404.503(b) |
| Appears at the hearing as the substituted party | Receives full back pay if the ALJ finds disability |
| Receives notice of decision at the address on HA-510 | 60-day Appeals Council clock starts |
Scenario 2: Adult Child Continues an SSI Appeal With No Eligible Survivor
| Step the Child Takes | Legal Result |
|---|---|
| Files HA-510 because parent died with no living-with spouse | ALJ may accept substitution for hearing purposes only |
| Marks “other party with financial interest” in Field 4 | Standing for the appeal but not for payment |
| Wins the appeal with a favorable ALJ decision | Underpayment is forfeited under § 416.542(b) |
| Files SSA-1724 anyway to test eligibility | SSA denies because adult non-living-with child is not eligible |
| Considers whether to keep pursuing the case | Often makes sense only if Title II is also pending |
Scenario 3: Estate Executor Continues a Title II Survivor Claim
| Step the Executor Takes | Legal Result |
|---|---|
| Confirms no spouse, child, or parent qualifies under § 404.503(b) | Estate is the lowest-priority payee |
| Attaches letters testamentary to HA-510 | Authority to act for the estate is documented |
| Provides estate’s EIN on the form | SSA can issue payment to the estate |
| Files probate distribution after payment | Funds flow under state intestacy or will |
| Misses the executor authority filing | ALJ dismisses for lack of qualified substitute |
Federal vs. State Nuances
SSA appeals are federal, but the distribution of any underpayment after payment can be governed by state law. For Title II, when the estate is the payee under § 404.503(b), state probate rules then control how the funds reach heirs. For Title XVI, no estate distribution exists at all because the underpayment is forfeited if no eligible living-with survivor is found under § 416.542(b).
State intestacy laws also affect who has authority to sign HA-510 as an “estate representative.” In community property states like California, the surviving spouse may inherit under California Probate Code § 6401, while in Texas the Texas Estates Code § 201.002 sets a different community-property rule. The SSA does not adjudicate these questions, but it does require a qualified state-court appointment letter when “estate” is checked on Field 4.
The consequence of ignoring state nuances is that an out-of-state executor may sign HA-510 only to find that no state court has yet issued letters. A common misconception is that being named in a will is enough — under most states’ rules, you must be appointed by the probate court before SSA will accept the substitution.
Mistakes to Avoid
Even careful filers stumble on HA-510. The seven mistakes below cause the most dismissals, payment delays, and outright forfeitures, and each one is preventable.
- Filing without a certified death certificate, which forces the hearing office to pause the case under HALLEX I-2-1-50
- Choosing “estate” instead of “spouse” when both apply, which routes payment through probate and shrinks the net proceeds
- Filing HA-510 at the Appeals Council stage instead of using the I-3-1-5 letter procedure, which causes the form to be rejected
- Skipping the SSN field for the substituting party, which delays issuance of the Form 1099 and the underpayment check
- Treating an adult non-living-with child as eligible for an SSI underpayment under § 416.542(b) and losing the funds to the Treasury
- Submitting an unsigned PDF, which is treated as never filed under HALLEX I-1-1-15
- Missing the ALJ’s reasonable-time deadline, which triggers dismissal under § 404.957 and forces a difficult reopening request
How HA-510 Differs Across Benefit Types
Not every SSA appeal uses HA-510 the same way. The form’s effect depends on which title of the Social Security Act the claim sits under. The differences below decide who can be paid even after a successful substitution.
Title II SSDI, Retirement, and Survivor Claims
For Title II claims, HA-510 unlocks the underpayment hierarchy in § 404.503(b). The substituting party can be a spouse, child, parent, or estate, in that order. The full back pay through the date of death is payable, and benefits stop on the date of death under § 404.316.
The consequence of skipping HA-510 here is forfeiture of months or years of accrued back pay. A common misconception is that the $255 lump-sum death payment is the same as the underpayment — it is not, and it does not require HA-510 to claim. The $255 is in addition to, not in place of, the underpayment.
A real example: Helen Wright dies after a four-year SSDI appeal with $97,000 in back pay due. Her husband files HA-510 and collects the full $97,000, plus the $255 lump sum. Without HA-510, both amounts would have been at risk.
Title XVI SSI Claims
For Title XVI claims, HA-510 still allows the appeal to proceed, but payment is far more limited. Under § 416.542(b), only a living-with spouse or living-with parent of a disabled or blind child receives the underpayment. If no such person exists, the underpayment is forfeited entirely.
The consequence is that SSI substitutions sometimes have value only when paired with a concurrent Title II claim. A common misconception is that “living with” means living in the same household at any time — it actually means living together at the time of death or in the month of death.
A real example: George Patel lives apart from his SSI-only mother for the last year of her life. He files HA-510, wins the appeal, and learns that no SSI underpayment is payable. He receives nothing despite winning on the merits.
Medicare Appeals at the ALJ Level
For Medicare Part A and B appeals heard by the Office of Medicare Hearings and Appeals, HA-510 is not used. Substitution at OMHA is governed by 42 C.F.R. § 405.906 and a separate notice procedure.
The consequence of confusing the two is filing HA-510 with OMHA and getting it rejected. A common misconception is that all “SSA-related” appeals share the same forms — they do not, and OMHA is part of HHS, not SSA.
Dos and Don’ts
These rules speed up substitution and protect payment, drawn from current HALLEX practice and the POMS instructions.
Dos:
- Do file HA-510 within 30 days of death because the ALJ’s “reasonable time” under § 404.957 is rarely longer
- Do attach a certified death certificate with the form so the ALJ does not pause the case
- Do choose the highest-priority relationship under § 404.503(b) so payment routes directly to you
- Do upload through ERE if you are an appointed representative because it date-stamps the filing instantly
- Do file SSA-1724 in addition to HA-510 because SSA-1724 is the underpayment claim form and HA-510 is only the procedural notice
Don’ts:
- Don’t assume the SSA already knows about the death because reporting through § 205(r) can lag for weeks
- Don’t file HA-510 at the Appeals Council because the I-3-1-5 letter procedure controls there
- Don’t list a P.O. box if you can use a street address because the notice of decision is mailed there
- Don’t sign the form by typed name because HALLEX I-1-1-15 requires a real signature
- Don’t ignore state probate authority when checking “estate” because letters testamentary are required
Pros and Cons of Filing HA-510
Pros:
- Preserves accrued back pay that would otherwise vanish under § 404.957
- Lets the ALJ issue a binding favorable decision that supports related survivor benefit claims
- Establishes priority for the Title II underpayment before other heirs claim it
- Gives the substituting party access to the eFolder record through a representative
- Stops the hearing office from sua sponte dismissing under HALLEX I-2-4-15
Cons:
- Adds a procedural layer that can extend the timeline by 30 to 60 days
- Triggers tax reporting on Form 1099 for the substituting party
- Can interact poorly with state probate when the estate is the payee
- Offers no payment in many SSI-only cases under § 416.542(b)
- Requires a death certificate that can take weeks to obtain from state vital records
Key Entities You Will Deal With
A successful HA-510 filing involves a small ecosystem of agencies and roles. The Social Security Administration is the lead agency, and within it the Office of Hearings Operations processes the form. The Administrative Law Judge decides whether the substitution is accepted and whether the underlying claim is paid.
The Appeals Council sits one level above and uses HALLEX I-3-1-5 for substitutions at its level. State vital records offices issue the death certificates that anchor the form. State probate courts issue the letters testamentary that authorize estate representatives.
The Internal Revenue Service becomes relevant when the underpayment is paid because the Form 1099 and IRS Publication 915 describe the tax treatment. Each entity has a narrow role, and confusing them slows the case.
Recap of Important Rulings and Authorities
HALLEX I-2-1-50 is the central procedural authority and tells judges that they must allow a reasonable time for substitution and must give written notice of any planned dismissal. The Appeals Council enforced this duty in Bowen v. City of New York, 476 U.S. 467 (1986), which underscored that procedural fairness in disability appeals is a constitutional concern.
The Supreme Court’s decision in Sims v. Apfel, 530 U.S. 103 (2000) confirms that issue exhaustion at the Appeals Council is not required, which matters when a substituted party takes over an appeal mid-stream. Lower courts have applied FRCP 25(a) to require federal-court substitution within 90 days of a suggestion of death, as in cases tracked by the U.S. Courts docket system.
These authorities together mean that substituted parties retain the deceased’s full procedural rights, including the right to a de novo hearing and the right to challenge a denial in federal court under 42 U.S.C. § 405(g).
Frequently Asked Questions
Is Form HA-510 the same as Form SSA-1724?
No. HA-510 is the procedural notice for substituting a party in a pending hearing-level appeal, while SSA-1724 is the claim form for collecting an underpayment.
Can I file HA-510 electronically?
Yes. Appointed representatives can upload it through Electronic Records Express, and unrepresented parties may fax or mail it to the hearing office listed on the most recent SSA notice.
Do I have to be a U.S. citizen to file HA-510?
No. Citizenship is not required to substitute, but payment of any Title II underpayment follows separate rules under § 404.460.
Can a minor child sign HA-510?
No. A minor cannot sign because of capacity rules, so a parent or legal guardian signs on the child’s behalf and identifies the representative payee role on the form.
Does HA-510 stop SSA from collecting an overpayment?
No. A pending substitution does not pause overpayment recovery against the deceased’s record, although waiver and recovery rules under § 404.506 still apply to the substitute.
Can I file HA-510 after the ALJ has already dismissed the case?
Yes. You can file together with a request to vacate dismissal if you act within 60 days, or seek reopening under § 404.988 for good cause.
Do I need an attorney to file HA-510?
No. The form is designed for self-filers, but attorneys and non-attorney representatives can ease the process, especially when state probate authority must be documented.
Will the ALJ hold a hearing after I substitute?
Yes. The ALJ proceeds with a de novo hearing on the merits, and the substituted party may testify about the deceased’s medical evidence and daily activities to the extent personally known.
Are HA-510 underpayments taxable?
Yes. Title II underpayments are reported on Form SSA-1099 and may be partially taxable under IRS Publication 915 depending on the recipient’s income.
Can multiple people file HA-510 for the same claim?
No. Only one substituting party is recognized at a time, and the ALJ resolves competing claims using the priority order in § 404.503(b).
What if the deceased had no living relatives?
Yes, the appeal can still proceed if a court-appointed estate representative signs HA-510 and provides letters testamentary, but only Title II underpayments can be paid to an estate.
Does HA-510 affect survivor benefits like the $255 lump sum?
No. The $255 lump-sum death payment is a separate benefit claimed on its own application and does not require HA-510 to be filed.
Related reading
- How to Fill Out Form HA-4608 (w/Examples) + FAQs
- How to Fill Out Form HA-4633 (w/Examples) + FAQs
- How to Fill Out Form HA-85 (w/Examples) + FAQs
- How to Fill Out Form SSA-4290-F5 (w/Examples) + FAQs
- How to Fill Out Form SSA-4815 (w/Examples) + FAQs
- How to Fill Out Form SSA-7156 (w/Examples) + FAQs
- How to Fill Out Form SSA-8001-BK (w/Examples) + FAQs