Md. Code Ann., Lab. & Empl. § 9-636
(b) Absent conclusive proof to the contrary, the loss or loss of use of any of the following constitutes a permanent total disability:
(6) a combination of any 2 of the following:
Added by Acts 1991, c. 8, § 2, eff. Oct. 1, 1991.
Formerly Art. 101, § 36.