Md. Code, Crim. Law § 2-506

(a) A person may not cause the death of another as a result of the person’s negligently driving, operating, or controlling a motor vehicle or vessel while the person is impaired by a controlled dangerous substance, as defined in § 5–101 of this article. (b) A violation of this section is homicide by motor vehicle or vessel while impaired by a controlled dangerous substance. (c) (1) Except as provided in paragraph (2) of this subsection, a person who violates this section is guilty of a felony and on conviction is subject to imprisonment not exceeding 5 years or a fine not exceeding $5,000 or both. (2) (i) A person who violates this section, having previously been convicted under this section, § 2–209, § 2–210, § 2–503, § 2–504, § 2–505, or § 3–211 of this article, or § 21–902 of the Transportation Article, is guilty of a felony and on conviction is subject to imprisonment not exceeding 10 years or a fine not exceeding $10,000 or both. (ii) For the purposes of application of subsequent offender penalties under subparagraph (i) of this paragraph, a conviction for a crime committed in another state or federal jurisdiction that, if committed in this State would constitute a violation of this section, § 2–209, § 2–210, § 2–503, § 2–504, § 2–505, or § 3–211 of this article, or § 21–902 of the Transportation Article, shall be considered a violation of this section. (d) This section does not apply to a person who is entitled to use the controlled dangerous substance under the laws of this State.