Maryland Code, State Personnel and Pensions § 23-222

(i) for normal service retirement as provided in § 23-401(d) of this title;

(ii) for early service retirement as provided in § 23-402 of this title;

(iii) for ordinary disability retirement as provided in § 29-108 of this article; and

(iv) for accidental disability retirement as provided in § 29-110 of this article;