The consequences of lying — or otherwise misrepresenting the details reported in your original application for disability insurance coverage — vary depending on the nature of the misrepresentation.
In Illinois, you may still be entitled to receive disability benefits, even if you misrepresented certain facts on your original application, so long as those facts were not: 1) intended to deceive the insurer, and 2) material to the disability coverage.
For example, if you simply forgot to write about some minor health condition, the insurer cannot use that as justification for a denial (or rescinded coverage). Further, if the health condition is unrelated to the disability coverage — in other words, if they would have still extended coverage to you had you no misrepresented the facts — then the insurer is required to pay out benefits for a legitimate disability claim.
It’s worth noting, however, that the insurer may be entitled to payments to cover any difference that there would have been to the insurance premium.