204 Pa. Code § 91.74
Enforcement Rule 301(d) provides that whenever the Board shall petition the Supreme Court to determine whether an attorney is incapacitated from continuing the practice of law by reason of mental infirmity or illness or because of addiction to drugs or intoxicants, the Court may take or direct such action as it deems necessary or proper to determine whether the attorney is so incapacitated, including the examination of the attorney by such qualified medical experts as the Court shall designate; that if, upon due consideration of the matter, the Court concludes that the attorney is incapacitated from continuing to practice law, it shall enter an order transferring the attorney to disability inactive status on the ground of such disability for an indefinite period and until the further order of the Court; that if examination of a respondent-attorney by a qualified medical expert reveals that the respondent lacks the capacity to aid effectively in the preparation of a defense, the Court may order that any pending disciplinary proceeding against the respondent shall be held in abeyance except for the perpetuation of testimony and the preservation of documentary evidence; that the order of abatement may provide for reexaminations of the respondent-attorney at specified intervals or upon motion by Disciplinary Counsel; and that the Court shall provide for such notice to the respondent-attorney of proceedings in the matter as it deems proper and advisable and may appoint counsel to represent the respondent if the respondent is without adequate representation.
204 Pa. Code § 91.74