Referenced in 2018 IMC. ANSI/ASHRAE/ASHE Standard 170 offers guidance, regulation, and mandates to designers of health care facilities. This revised 2013 edition incorporates 24 addenda issued since 2008. It reflects current trends in health care facility design and has been updated to reflect changes to health care design references such as the Guidelines for Design and Construction of Health Care Facilities, published by the Facility Guidelines Institute (FGI).