Maryland Code, Health-General § 10-628

(a)(1) If an emergency evaluee cannot pay or does not have insurance that covers the charges for emergency services, an initial consultant examination by a physician or nurse practitioner, and transportation to an emergency facility and, for an involuntary admission of the emergency evaluee, to the admitting facility, the Department shall pay the appropriate party the actual cost or a reasonable rate for this service, whichever is lower, except that hospitals shall be paid at rates approved by the Health Services Cost Review Commission.

(2) The reasonable rate for the services provided under an emergency petition shall be calculated by using a methodology established by regulation and reasonably related to the actual cost.