Does my disability insurance lawsuit need to be filed in State or Federal Court?
If your disability insurance policy is governed by ERISA then your disability lawsuit will be filed in Federal Court.
If you have an individual disability insurance policy, then it may be possible to file your lawsuit in either State or Federal Court.
There are pro and cons to both state and federal court which must be evaluated on a case by case basis.
The federal government has created a basic tutorial on the differences between State and Federal Courts.