(a) Except for determinations of good farming practices, nothing in this subpart prohibits a participant from filing an appeal of an adverse decision directly with NAD in accordance with part 11 of this title without first requesting administrative review or mediation under this subpart.(b) If the participant has timely requested administrative review or mediation, the participant may not participate in a NAD hearing until such administrative review or mediation is concluded. The time for appeal to NAD is suspended from the date of receipt of a request for administrative review or mediation until the conclusion of the administrative review or mediation. The participant will have only the remaining time to appeal to NAD after the conclusion of the administrative review or mediation. 67 FR 13251 , Mar. 22, 2002, as amended at 68 FR 37720 , June 25, 2003