Cal. Health and Safety Code § 1317.4b

(a) A psychiatric unit within a general acute care hospital, as defined in subdivision (a) of Section 1250, a psychiatric health facility of more than 16 beds, as defined in Section 1250.2 and subject to subdivision (d), or an acute psychiatric hospital, as defined in subdivision (b) of Section 1250, shall accept a transfer of a person with a psychiatric emergency medical condition, as defined in subdivision (k) of Section 1317.1, from a health facility licensed under this chapter that maintains and operates an emergency department and the receiving facility shall provide emergency services and care to that person consistent with paragraph (2) of subdivision (a) of Section 1317.1, regardless of whether the person is voluntary or involuntarily detained for assessment, evaluation, and crisis intervention, or placement for evaluation and treatment pursuant to the Lanterman-Petris-Short Act (Part 1 (commencing with Section 5000) of Division 5 of the Welfare and Institutions Code), or whether the facility operates an emergency department, if all of the following requirements are met: (1) The treating physician at the sending facility has determined that the patient is medically stable and appropriate for treatment in a psychiatric setting and has included that determination in the patient’s medical record. (2) The facility has an available bed. (3) The facility has appropriate facilities and qualified personnel available to provide the services or care. (b) A facility accepting a transfer of a person with a psychiatric emergency medical condition pursuant to subdivision (a) shall comply with the requirements of subdivisions (b), (d), and (f) of Section 1317. (c) This section shall not apply to a facility listed in Section 4100 of the Welfare and Institutions Code. (d) This section shall not apply to a psychiatric health facility that is county owned and operated.