St. Luke’s Health System in Kansas City is joining a national trend of providing so-called micro hospitals, which provide eight to 10 beds for overnight stays along with 24-hour emergency room services.

St. Luke’s says it is planning micro hospitals in Roland Park, Overland Park, Leawood and Kansas City, Kansas. The overnight beds make the hospitals different from free-standing emergency rooms that were introduced in the area years ago.

The Kansas City Star reports  the hospital system currently is adding micro hospitals only in Kansas, which has less stringent requirements for adding overnight hospital beds than Missouri.

In Missouri, hospitals must go through a Certificate of Need process that is expensive and lengthy. Kansas does not require a certificate of need.