38 CFR § 42.16 - Disqualification of reviewing official or ALJ.
(b) A party may file with the ALJ a motion for disqualification of a reviewing official or an ALJ. The motion shall be accompanied by an affidavit alleging personal bias or other reason for disqualification.
(c) The motion and affidavit shall be filed promptly upon the party's discovery of reasons requiring disqualification, or such objections shall be deemed waived.
(d) The affidavit shall state specific facts that support the party's belief that personal bias or other reason for disqualification exists and the time and circumstances of the party's discovery of the facts. It shall be accompanied by a certificate of the representative of record that it is made in good faith.