Section 426.300 - Review of LCDs, NCDs, and deemed NCDs(a) Upon the receipt of an acceptable LCD complaint as described in § 426.400 , an ALJ conducts a review of a challenged provision (or provisions) of an LCD using the reasonableness standard.(b) Upon the receipt of an acceptable NCD complaint as described in § 426.500 , the Board conducts an NCD review of a challenged provision (or provisions) of an NCD using the reasonableness standard.(c) The procedures established in this part governing the review of NCDs also apply in cases in which a deemed NCD is challenged.