Section 5150 is a section of the California Welfare and Institutions Code (WIC) (in particular, the Lanterman–Petris–Short Act or "LPS") which authorizes a qualified officer or clinician to involuntarily confine a person suspected to have a mental disorder that makes him or her a danger to themselves, a danger to others, and/or gravely disabled. A qualified officer, which includes any California peace officer, as well as any specifically designated county clinician, can request the confinement after signing a written declaration. When used as a term, 5150 (pronounced "fifty-one-fifty") can informally...