5150 is a term that is used to refer to the California Welfare and Institutions Code. This code is used to describe the involuntary psychiatric confinement of individuals who are deemed to be a danger to themselves or others. This code is used to initiate a 72-hour hold in a psychiatric facility where the individual can be evaluated and receive treatment. This code is often used for people who are exhibiting signs of mental illness, such as severe depression, hallucinations, and suicidal thoughts. This code is an important tool for ensuring that individuals who are in need of mental health treatment are able to receive it in a safe and secure environment. This code is also used to protect the public from people who may be a threat to themselves or others.