(b) EXPERT’S ROLE. The court must inform the expert of the expert’s duties. The court may do so in writs of prohibitioning and have a copy filed with the clerk or may do so orally at a conference in which the parties have an opportunity to participate. The expert:
(1) must advise the parties of any findings the expert makes;
(2) may be deposed by any party;
(3) may be called to testify by the court or any party; and
(4) may be cross-examined by any party, including the party that called the expert.
(c) COMPENSATION. The expert is entitled to a reasonable compensation, as set by the court. The compensation is payable as follows:
(1) in a criminal case or in a civil case involving just compensation under the Fifth Amendment, from any funds that are provided by law; and
(2) in any other civil case, by the parties in the proportion and at the time that the court directs — and the compensation is then charged like other costs.
(d) DISCLOSING THE APPOINTMENT TO THE JURY. The court may authorize disclosure to the jury that the court appointed the expert.
(e) PARTIES’ CHOICE OF THEIR OWN EXPERTS. This rule does not limit a party in calling its own experts.
US Supreme Court // ©
(As amended Mar. 2, 1987, eff. Oct. 1, 1987; Apr. 26, 2011, eff. Dec. 1, 2011.)






