Md. Code, State Fin. & Proc. § 13-201

(a) In this subtitle the following words have the meanings indicated. (b) “Change order” means a written order that: (1) is signed by the procurement officer; and (2) directs the contractor to make changes that the procurement contract authorizes the procurement officer to order without the consent of the contractor. (c) “Contract modification” means a written alteration that: (1) affects specifications, delivery point, date of delivery, period of performance, price, quantity, or other provisions of a procurement contract; and (2) is accomplished by mutual action of the parties to the procurement contract. (d) “Cost-reimbursement contract” means a procurement contract under which the State reimburses a contractor for fees and other costs that are: (1) recognized as allowable and allocable under the regulations of the Board on price and cost principles; and (2) within a stated ceiling.