What Is a 5150 Hold? California’s Involuntary Detention Explained

Meta description: Learn what a California 5150 hold means, who can authorize it, how long it lasts, what happens during evaluation, and what rights a detained person has.

“5150” is shorthand for a California law that allows certain professionals to temporarily detain a person for mental health evaluation when specific safety or care criteria are met. It is not a nationwide police code, a criminal charge, or a guarantee that someone will be hospitalized for three days. The law sets a process for emergency assessment, with safeguards and limits. Knowing how a 5150 hold works can help families and individuals understand what may happen during a mental health crisis.

What Does Police Code 5150 Mean?

California Welfare and Institutions Code Section 5150 authorizes an involuntary detention for up to 72 hours so a person can be assessed and receive crisis intervention or treatment. A detention may be initiated when there is probable cause to believe, because of a mental health disorder, that the person is a danger to themselves, a danger to others, or “gravely disabled.”

People often call it a “5150 hold” or “5150 psychiatric hold.” The number comes from the section of California law, not from a universal police radio code. Other states have their own emergency commitment laws, procedures, and terminology; their rules may be substantially different.

A 5150 is a temporary evaluation-and-treatment process. It does not by itself mean a person has been diagnosed with a particular condition, found guilty of a crime, or committed to long-term care. The legal standard is about whether the statutory criteria appear to be met at the time of the crisis.

When Can Someone Be Placed on a 5150 Hold?

The decision requires probable cause, based on the facts available, to believe that a person meets at least one of the legal criteria because of a mental health disorder. A person’s unusual behavior, diagnosis, disagreement with others, or refusal to accept help does not automatically establish grounds for detention. The circumstances and the connection to the statutory criteria matter.

• Danger to self: Evidence may include a recent suicide attempt, credible threats, or behavior suggesting a serious and immediate risk of self-harm. A statement or action must be considered in context.
• Danger to others: This may involve a credible threat or conduct indicating a risk of serious harm to another person. The specific facts, rather than a label or assumption, are relevant.
• Gravely disabled: This generally concerns an inability to provide for essential needs because of a qualifying condition. The definition has changed under California law, as described below.

Not every person in crisis will qualify for a 5150, and a person who qualifies may not remain detained for the full period. The law permits detention for evaluation for up to 72 hours; it does not require staff to keep someone who no longer meets the criteria.

Who Can Authorize a 5150?

California law allows a peace officer to take a person into custody under Section 5150. It also allows certain county-designated mental health professionals and other authorized individuals to initiate a detention, depending on their qualifications and local procedures. A 5150 is not limited to a police decision, though law enforcement may be involved when a crisis occurs in public or safety is at issue.

In many communities, mobile crisis teams, emergency department staff, and county behavioral health services may play a role in responding or arranging evaluation. The available options vary by county. A person or family member generally cannot personally issue a 5150 order; they can contact emergency services or local crisis resources and share relevant information with authorized responders.

What Does “Gravely Disabled” Mean?

California’s definition of grave disability was expanded by Senate Bill 43. The expanded definition includes inability, due to a mental health disorder or a severe substance use disorder, to provide for basic personal needs such as food, clothing, shelter, personal safety, or necessary medical care. The law’s provisions took effect statewide by January 1, 2026, although some counties implemented them earlier.

The change matters because the former definition focused on food, clothing, and shelter. Under the expanded standard, the person’s ability to remain safe and obtain necessary medical care may also be relevant. However, a diagnosis or substance use alone does not automatically establish grave disability. The inability to meet the relevant needs must be linked to a qualifying disorder and supported by the circumstances.

Because the definition and its application can be complex, local county guidance may be useful. In a specific case, a patient-rights advocate or California attorney can explain how current law applies to the facts.

What Happens During the 72-Hour Evaluation?

A person detained under Section 5150 is taken to a county-designated facility for assessment, crisis intervention, or treatment. The facility evaluates the person’s mental health and immediate needs, considers safety risks, and determines whether continued detention is legally appropriate. The 72-hour period is a maximum for the initial hold, not a fixed hospital stay.

During that period, the facility may release the person earlier, offer voluntary treatment, or continue to provide care if the legal requirements remain satisfied. If the person needs additional involuntary treatment, the facility must follow a separate legal process rather than simply treating the original 5150 as unlimited authority.

California law also requires an assessment of whether the person can be served without detention. In practice, options may include voluntary care, outpatient support, crisis stabilization, or other services, depending on the person’s needs and what is available locally.

Can a 5150 Hold Be Extended?

A 5150 detention cannot simply be extended indefinitely under the same authorization. If the facility believes additional involuntary treatment is necessary after the initial period, it may pursue another legal procedure. One example is a certification for up to 14 days of intensive treatment under Section 5250, which requires specific findings and provides a process for review.

Other procedures may apply in particular circumstances, including additional certifications or court involvement. The exact route depends on the facts and applicable law. A longer hold is not automatic; the facility must meet the requirements for the next stage, and the person has rights to notice and review.

What Rights Does a Person Have on a 5150?

People detained under California’s Lanterman-Petris-Short Act have legal rights. These include receiving information about the detention and treatment process, being treated humanely and safely, and being informed of certain rights in a language they understand when required. They may also have access to patient-rights advocacy and a process to challenge continued detention.

Rights can include access to a hearing if the facility seeks further involuntary treatment, subject to the applicable procedure. Patients may also be able to communicate with an attorney or advocate and raise concerns about their treatment. The precise rights and timelines depend on the type of detention and the person’s circumstances.

A family member can share helpful information with clinicians, such as recent behavior, medications, known diagnoses, and safety concerns. However, health privacy rules may limit what staff can disclose in return. A patient-rights advocate can help explain facility-specific procedures and how to request assistance.

Does a 5150 Mean Someone Has a Criminal Record?

A 5150 is a civil mental health detention, not a criminal conviction. It does not mean the person has been charged with a crime or found guilty. Police may be present, and a separate criminal matter could arise from other conduct, but the mental health hold itself is not a criminal sentence.

Medical and behavioral health records are generally protected by privacy laws, although specific exceptions may allow information to be shared for treatment, safety, or legal purposes. A 5150 may have consequences beyond the immediate evaluation, so it is wise not to assume that “not a criminal charge” means “no legal effects.”

Can a 5150 Affect Firearm Rights?

In California, a person detained under Section 5150 may face a state firearm prohibition lasting five years, subject to the law’s conditions and exceptions. The person may have a legal process to seek relief from that prohibition. A separate rule can apply after certain longer-term certifications, and federal law may also be relevant depending on the circumstances.

Firearm restrictions are particularly fact-specific. The type of detention, applicable state and federal rules, and any later court decision can affect the result. Anyone concerned about purchasing, possessing, or accessing firearms after a hold should consult a qualified California attorney rather than relying on a general summary.

How to Respond to a Mental Health Crisis

If someone appears to be in immediate danger, call 911 and explain that the situation involves a mental health crisis. When it is safe to do so, provide clear details about specific threats, attempts, access to dangerous items, medical needs, and relevant history. Ask whether a crisis-trained responder or mobile crisis team is available in the area.

For urgent emotional distress or suicide-related concerns in the United States, call or text 988 to reach the Suicide & Crisis Lifeline. It is not a replacement for 911 when there is immediate physical danger. Local crisis services and availability vary, so callers should describe the urgency and location clearly.

During a response, calm communication and a safe environment may help. Avoid arguing, crowding the person, or making sudden movements if those actions could increase risk. Responders make the legal decision based on the situation and applicable standards; requesting help does not automatically result in a 5150 detention.

Key Facts About a California 5150 Hold

Sources and Further Information

• California Welfare and Institutions Code Section 5150
• California Welfare and Institutions Code Section 5008, including the definition of “gravely disabled”
• California Department of Health Care Services, for state behavioral health guidance and information on implementation of Senate Bill 43