The legislation, signed Friday and taking effect July 1, also ensures that abortion patients can listen to the fetal heartbeat.
Sebelius signed the measure as she awaits U.S. Senate confirmation as federal Health and Human Services secretary. Anti-abortion groups in Washington have criticized her nomination because of her abortion rights stance.
The Kansas governor offered no explanation of why she signed the bill, though she's never targeted such provisions when she's vetoed past abortion measures.
The bill amends a state law requiring doctors to obtain a patient's informed consent before performing an abortion.
(Copyright 2009 by The Associated Press. All Rights Reserved.)