California Code, Health and Safety Code - HSC § 1275.4

(a) On or before January 1, 2017, each skilled nursing facility, as defined in subdivision (c) of Section 1250, shall adopt and implement an antimicrobial stewardship policy that is consistent with antimicrobial stewardship guidelines developed by the federal Centers for Disease Control and Prevention, the federal Centers for Medicare and Medicaid Services, the Society for Healthcare Epidemiology of America, or similar recognized professional organizations.

(b) All skilled nursing facilities, as defined in subdivision (c) of Section 1250, shall comply with this section. Failure to comply with the requirements of this section may subject the facility to the enforcement actions set forth in Section 1423.