Mont. Code Ann. § 50-20-109
Control of practice of abortion
50-20-109 . Control of practice of abortion. (1) Except as provided in 50-20-401 , an abortion may not be performed within the state of Montana:
(a) except by a licensed physician or physician assistant; and
(b) on an unborn child:
(i) who is capable of feeling pain, except as provided in 50-20-603 ; or
(ii) who is viable, unless necessary to preserve the life of the mother.
(2) Violation of subsection (1) is a felony.