Federal Rules of Evidence – Rule 409 (through March 1, 2020)
You cannot use offers to pay medical expenses to prove liability.
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.
Selected Committee Notes
The considerations underlying this rule parallel those underlying Rules 407 and 408, which deal respectively with subsequent remedial measures and offers of compromise. As stated in Annot., 20 A.L.R.2d 291, 293:
“[G]enerally, evidence of payment of medical, hospital, or similar expenses of an injured party by the opposing party, is not admissible, the reason often given being that such payment or offer is usually made from humane impulses and not from an admission of liability, and that to hold otherwise would tend to discourage assistance to the injured person.”
Contrary to Rule 408, dealing with offers of compromise, the present rule does not extend to conduct or statements not a part of the act of furnishing or offering or promising to pay. This difference in treatment arises from fundamental differences in nature. Communication is essential if compromises are to be effected, and consequently broad protection of statements is needed. This is not so in cases of payments or offers or promises to pay medical expenses, where factual statements may be expected to be incidental in nature.
For rules on the same subject, but phrased in terms of “humanitarian motives,” see Uniform Rule 52; California Evidence Code §1152; Kansas Code of Civil Procedure §60–452; New Jersey Evidence Rule 52.