Mont. Code Ann. § 50-20-507
Exceptions
50-20-507 . Exceptions. Consent is not required under 50-20-504 if:
(1) the attending physician or physician assistant certifies in the minor's medical record that a medical emergency exists and there is insufficient time to provide consent;
(2) consent is waived, in a notarized writing, by the person entitled to give consent; or
(3) consent is waived under 50-20-509 .