Md. Code, Health-Gen. § 18-4A-01 : HEALTH - GENERAL — DISEASE PREVENTION — CONSENT TO IMMUNIZATION OF MINORS —4A-01 - "Parent" defined TEXT PDF In this subtitle, "parent" means: (1) A natural or adoptive parent of a minor; (2) A guardian of a minor; or (3) Any other person who, under court order, is authorized to give consent for a minor. Md. Code, HG § 18-4A-01