Ill. Admin. Code tit. 95, § 400.685
a) Compromise
1) Prohibited Uses of Evidence. Evidence of the following is not admissible on behalf of any party, when offered to prove liability for, invalidity of, or amount of, a claim that was disputed as to validity or amount, or to impeach through a prior inconsistent statement or contradiction:
2) Permitted Uses of Evidence
A) This Section:
b) Offers to Pay Medical and Similar Expenses
In addition to the provisions of Section 8-1901 of the Code of Civil Procedure, evidence of furnishing, promising to pay, or offering to pay medical, hospital or similar expenses resulting from an injury is not admissible to prove liability for the injury. (Il. Mil. R. Evid. 409)
c) Pleas, Plea Discussions and Related Statements
1) Definitions
2) Except as otherwise provided in this Section, evidence of the following is not admissible in any court-martial proceeding against the accused who made the plea or was a participant in the plea discussions:
D) any statement made in the course of plea discussions with the convening authority, staff judge advocate, trial counsel or other counsel for the government that do not result in a plea of guilty or that result in a plea of guilty later withdrawn. However, such a statement is admissible: