When Aetna denies a disability claim, the letter often feels final. It isn't. Understanding why these denials happen — and how the appeals process works — is the first step toward knowing what your options actually are.
This distinction matters enormously. Aetna administers private long-term disability (LTD) insurance, typically offered through an employer. The Social Security Disability Insurance (SSDI) program is a federal benefit run by the Social Security Administration (SSA). These are completely separate systems with different rules, different definitions of disability, and different appeal processes.
A denial from Aetna does not mean you'll be denied SSDI — and vice versa. Many people pursue both simultaneously. Some hold an Aetna LTD policy through work and apply for SSDI. If both are approved, Aetna's benefit is often offset by the SSDI amount, meaning Aetna pays less once SSA benefits begin.
Understanding which system denied you — and why — shapes everything that follows.
Aetna's denial reasons typically fall into a few categories:
The denial letter itself must explain the reason. Under ERISA (the federal law governing most employer-sponsored benefit plans), Aetna is required to provide this explanation and outline your appeal rights.
If your Aetna LTD claim was denied through an employer plan, ERISA governs the appeal. This is a strict, time-sensitive process.
| Stage | What Happens | Typical Deadline |
|---|---|---|
| Internal Appeal | You challenge the denial directly with Aetna | Usually 180 days from denial |
| Second-Level Appeal | Some plans allow a second internal review | 45–60 days for Aetna to respond |
| External Review | Independent review by a third party | Varies by state |
| Federal Lawsuit | File in federal court under ERISA | After exhausting internal appeals |
One critical ERISA rule: Whatever evidence you want a court to consider must generally be submitted during the internal appeals process. The administrative record is largely closed once you move to litigation. This is why building a complete, documented record early — including all medical records, physician statements, and functional assessments — carries so much weight.
An Aetna denial has no formal bearing on your SSDI case. SSA makes its own determination based on its own criteria. That said, there are practical connections:
Medical evidence overlaps. The same records used for your Aetna claim will likely be submitted to SSA. If your treating physician's documentation is thin, it affects both claims.
Timing matters. If you stop working due to disability, your SSDI onset date — the date SSA recognizes your disability as beginning — determines when your benefits start and how much back pay you may receive. Delays in applying can affect that calculation.
Offset clauses. If Aetna pays LTD benefits and you're later approved for SSDI, Aetna will typically reduce your monthly LTD payment by your SSDI benefit amount. Some policies allow Aetna to recover overpayments retroactively.
If you're pursuing or considering SSDI while dealing with an Aetna denial, here's how the federal process works:
SSDI has four formal stages:
SSA evaluates whether your medical condition prevents you from performing substantial gainful activity (SGA) — a dollar threshold that adjusts annually. They assess your Residual Functional Capacity (RFC), your age, education, and past work history. None of these factors operate in isolation.
Work credits are also required. SSDI is an earned benefit tied to your employment history. Generally, you need 40 credits (roughly 10 years of work), with 20 earned in the last 10 years — though younger workers may qualify with fewer. 💡
No two Aetna denials are identical, and no two SSDI cases are either. What determines where a person lands includes:
A claimant with detailed physician records, a clear onset date, and a condition that maps directly to SSA's listing of impairments is in a different position than someone with a condition that is real but harder to document objectively. The same is true on the Aetna side.
An Aetna denial letter tells you why Aetna denied your claim under their policy. It says nothing about how SSA would weigh your medical history, whether your work record supports SSDI eligibility, or how an ALJ might evaluate your functional limitations at a hearing.
The two systems are measuring different things. Your situation — your records, your work history, your policy terms, your timeline — is what determines which paths are actually open.
