Why Disability Insurance Claims Get Denied and What to Do

Disability insurance claims are most often denied because of missing or weak medical evidence, a mismatch with the policy's definition of disability, missed deadlines, pre-existing condition exclusions or inconsistencies in the file. You can avoid many denials by reading the policy first, documenting functional limits carefully and meeting every deadline, including appeal windows.

Key takeaways

• Your policy's definition of disability (own occupation or any occupation) shapes what you must prove.
• Medical records should describe what you cannot do at work, not just a diagnosis.
• For most employer plans governed by ERISA, federal rules set decision and appeal timelines.
• The record built during the internal appeal often matters most if the case goes further.

Types of disability coverage and why it matters

There are three common sources of disability income: employer-sponsored group short-term and long-term disability plans, individual policies you buy yourself, and Social Security Disability Insurance (SSDI). The Social Security Administration explains that SSDI pays monthly benefits to people whose health conditions limit their ability to work and who have enough work history. Each source has different rules, so the first step is knowing which one you are claiming under.

Employer plans are usually governed by the Employee Retirement Income Security Act (ERISA), which sets claims procedure rules. Disability claims also intersect with job protection laws. Our article on being fired while on medical leave explains how FMLA fits in.

What are the most common reasons for denial?

Reason	What it looks like	How to avoid it
Insufficient medical evidence	Records list a diagnosis but no work restrictions	Ask providers to document specific functional limits
Definition of disability not met	Insurer says you can do your job or another job	Read the definition and address it directly
Missed deadlines	Late claim forms or appeal	Calendar every deadline from the plan documents
Pre-existing condition exclusion	Condition treated before coverage began	Check the lookback and exclusion period early
Gaps in treatment	Months without care	Keep regular appointments and follow treatment plans
Inconsistent statements	Forms, records and activity do not match	Be accurate and consistent across every document
Policy exclusions or limits	Certain conditions capped or excluded	Read limitations sections before filing

How to build a stronger claim

Start with the policy

Request the full plan document and summary plan description, not just the benefits brochure. Note the elimination period, the definition of disability, any change in definition after a set period, exclusions and offsets for other income such as SSDI. If your state runs a paid family and medical leave program, check how those benefits coordinate with the policy, a topic our article on paid family and medical leave costs covers from the employer side.

Document function, not just diagnosis

Insurers decide whether you can perform the duties the policy describes. Ask your providers to record specific limits, such as how long you can sit, stand or concentrate, and how symptoms affect attendance. Supply a written job description so limits can be compared with real duties.

Keep a complete, consistent file

Keep copies of every form, letter and record you submit, with dates. Answer questions honestly and consistently. Keep a simple symptom and activity journal that matches what you report to doctors.

Coordinate with your employer

HR can confirm plan details, provide job descriptions and explain how leave, accommodations and benefits interact. Employers that understand disability well also tend to handle return to work better, as our piece on disability hiring done right discusses.

What to do if your claim is denied

For ERISA-governed plans, the U.S. Department of Labor explains that a plan generally must decide a disability claim within 45 days, with up to two 30-day extensions for reasons beyond the plan's control. After a denial, claimants must receive at least 180 days to file an appeal at the first level of review. The plan's own procedures govern the details.

• Read the denial letter closely: it should state the reasons and the plan provisions relied on.
• Request a copy of your claim file and the documents used in the decision.
• Gather new evidence that answers each stated reason.
• File the appeal in writing before the deadline and keep proof of submission.
• Consider advice from an attorney who handles disability claims, especially for long-term disability.

The internal appeal record is often the main evidence if the dispute goes further, so treat it as your best chance to submit everything relevant.

Frequently Asked Questions

What is the difference between own occupation and any occupation?

An own occupation definition pays if you cannot perform the main duties of your own job. An any occupation definition pays only if you cannot perform any job suited to your education, training and experience. Many long-term disability policies start with own occupation and switch to any occupation after a set period.

Can I work part time while receiving disability benefits?

Sometimes. Many private policies include partial or residual disability provisions, and the Social Security Administration notes that some SSDI beneficiaries can work without losing benefits under specific rules. Report all work and income as required, because unreported earnings can lead to overpayments and termination of benefits.

Should I apply for SSDI if I have a private policy?

Many group long-term disability policies require you to apply for SSDI and reduce your benefit by the SSDI amount if approved. Check your policy's offset and application requirements. Even when not required, SSDI may provide benefits and Medicare eligibility after a waiting period, so it is often worth exploring.

Next steps

Get the full plan document, list every deadline, ask your providers to document functional limits and keep a complete file. If you receive a denial, request the claim file immediately and plan your appeal well before the deadline.

Last reviewed: October 2026.

Sources

• FAQs About the Benefit Claims Procedure Regulation, U.S. Department of Labor
• Disability Benefits, Social Security Administration