34 Pa. Code § 127.601 – Peer review—availability.

(a) A Workers’ Compensation judge may obtain an opinion from an authorized PRO concerning the necessity or frequency of treatment rendered under the act when one of the following exist:
1. (1) A petition for review of a UR determination has been filed.
2. (2) It is necessary or appropriate in other litigation proceedings before the Worker’s Compensation judge. Peer review shall be deemed not to be necessary or appropriate if there is a pending UR of the same treatment.
(b) Nothing in subsection (a) requires a Workers’ Compensation judge to grant a party’s motion for peer review.