How Do Disability Insurance Claims Work And What Can Cause A Denial

Disability insurance claims work by proving to an adjuster that your specific medical restrictions prevent you from performing the material duties of your own occupation (or any occupation, depending on the policy phase), and denials most commonly occur due to insufficient medical evidence, policy exclusions, or surveillance suggesting you are not as disabled as claimed.

How disability insurance claims define disability over time

The single most common reason a claim is approved initially but terminated later comes down to a contractual shift in the standard of disability. In the first 24 months (or sometimes 60 months, depending on your policy), you qualify as disabled if you cannot perform the material duties of your “own occupation.” This means the specific job you had when you stopped working. A surgeon who cannot use their hands, a software engineer with severe migraines, or a warehouse supervisor with a fused spine all clear this bar easily. But after that initial period, the policy flips to an “any occupation” standard. You now must prove you cannot perform any job for which you are reasonably suited by education, training, and experience. This is where most long-term denials happen. The adjuster will pull a labor market survey and list jobs like “telephone dispatcher” or “claims reviewer.” They will argue that your transferable skills let you do something else. Your own doctor may still say you are disabled. But the policy no longer cares about your specific career. It only cares about your general employability. If you are on a policy that has passed the 24-month mark, the burden of proof has quietly doubled. Your evidence must now address the “any occupation” test explicitly.

The proof gap between medical records and the claim form

A doctor’s simple diagnosis or a checked box on a form is never enough. This is where the majority of initial denials occur. The adjuster is not asking “is the patient sick?” They are asking “do the medical records prove that this specific medical problem prevents these specific job tasks?” Your claim form lists duties like “lift 25 pounds” or “operate a motor vehicle.” But your clinical notes likely say “patient reports back pain” or “limited range of motion.” That is a gap. To close it, you need objective test results. You need an MRI showing a herniated disc, a nerve conduction study confirming carpal tunnel, or a functional capacity evaluation (FCE) that measures your actual lifting, standing, and bending limits. Without those, the adjuster will often rely on a nurse reviewer who reads the file and concludes that your symptoms are “subjective.” The denial letter might say “insufficient medical evidence to support restrictions.” This is insurance-speak for “your doctor’s opinion is not backed by testing.” You must also ensure your physician writes a narrative that directly addresses each material duty of your job. They must state not just that you have a diagnosis, but exactly why that diagnosis makes it impossible to perform that duty. A generic “patient is disabled” note is worthless. A page that says “cannot rotate cervical spine more than 15 degrees, which is required for operating a forklift” is gold.

Disability insurance claims are won or lost entirely on the gap between what a doctor writes in a clinical note and what an adjuster reads as proof of vocational incapacity.

Pre-existing conditions and policy limitations

The most common mistake is assuming that any medical problem you have is covered the day your policy starts. Disability insurance contracts are riddled with look-back periods and exclusions that trigger automatic denials. Most group policies have a “pre-existing condition” clause that looks back 3 to 6 months before your effective date. If you saw a doctor for that bad knee, filled a prescription for that anxiety medication, or even mentioned symptoms in passing during a routine physical, the insurer can deny your claim on that basis alone. Beyond that, mental health disorders are almost always limited to 24 months of benefits. This cap applies even if your policy otherwise pays to age 65. Bipolar disorder, severe depression, or chronic fatigue syndrome are all subject to this limit. Chronic fatigue is often treated as a mental health disorder regardless of its physical cause. Similarly, self-reported illnesses without objective biomarkers face heightened scrutiny. This includes fibromyalgia, migraines, or chronic pain. The policy language will list these exclusions in plain sight, but most professionals never read that far. If your denial cites a pre-existing condition, check the exact effective date of your coverage and the look-back period. If you had a gap in treatment for 60 days before your policy started, you may be able to argue the illness was not “active.” But if you are within the first two years of coverage, the insurer has broad discretion to rescind your claim entirely.

When the insurance company investigates you

The failure case that stings the most is when you lose benefits not because of medical improvement. You lose them because surveillance footage, social media activity, or activity logs contradict your reported restrictions. Insurance companies hire private investigators for a reason. They are looking for you doing something you said you could not. If you filed a claim stating you cannot stand for more than 15 minutes, and the investigator films you walking a dog for 40 minutes, that footage becomes the centerpiece of a denial. The same is true if they film you carrying a grocery bag into your house. The adjuster is not interested in the nuance that you can walk for 20 minutes twice a day but cannot stand at a workbench for 8 hours. They see a contradiction. Social media is equally dangerous. A photo of you at a family wedding, playing catch, or even checking into a gym can be used to argue that your restrictions are exaggerated. Activity logs are another trap. If you write “spent the day in bed” but the investigator saw your car leave the house, the inconsistency is fatal. The key is to remember that the adjuster is not your doctor and not your enemy. But they are trained to look for fraud. You must be hyper-consistent in what you tell your treating physicians, what you write in your own diary, and what you post online. Even a small exaggeration on a good day can be twisted into evidence that you were never disabled at all.

Frequently asked questions

Can I get a lawyer to handle my appeal, or should I do it myself?

You can, and for a long-term claim, you probably should. An attorney who specializes in disability insurance and how does it work will know the exact deadline, the standard of review, and the types of evidence that win over an administrative judge. However, if your denial is based on a simple missing test result, you can fix that yourself by asking your doctor to write a supplemental letter.

What happens if I miss the appeal deadline?

You lose your right to sue. Your only option is to file a new claim, which will likely be denied again for the same reason. The deadline is usually 180 days from the date of the denial letter. But it can be as short as 60 days in some policies. Mark it on your calendar the day you receive the letter. Do not assume the insurer will remind you.

Does my long-term disability insurance cover and exclude pregnancy-related complications?

Pregnancy itself is covered under most policies. But complications like postpartum depression or back pain are often subject to the same pre-existing condition and mental health limitations as any other medical problem. If your pregnancy was uncomplicated, you may qualify for the standard 6-week vaginal or 8-week cesarean disability period. Anything beyond that requires objective evidence of a complication.

How much disability insurance do i actually need if I am already denied?

That question is now about your future, not your current claim. If you are denied and cannot work, you need to know your other income sources. This includes savings, a spouse’s income, or Social Security disability. If you are denied but can work in a different role, you may need to buy a new individual policy that covers your new occupation. But be prepared for higher premiums due to your medical history.