A carrier may not apply a preexisting condition provision to health care services for pregnancy or newborns, or to individuals younger than 19 years old. Except as provided in §A of this regulation, for contracts issued or renewed on or after October 1, 2009, an insurer or non-profit health service plan may impose a preexisting condition provision in accordance with Insurance Article, §15-508, Annotated Code of Maryland. A carrier may impose a waiting period from the date of application, in accordance with Insurance Article, §15-1208, Annotated Code of Maryland.