Maryland Health - General Section 5-617

      An advance directive or emergency medical services "do not resuscitate order" executed in another state shall be deemed to be validly executed for the purposes of this subtitle if executed in compliance with the laws of Maryland or the laws of the state where executed. Advance directives or emergency medical services "do not resuscitate orders" executed in another state shall be construed to give effect to the patient's wishes to the extent permitted by the laws of Maryland.