Cal. Codes » Government Code / TITLE 1. GENERAL / DIVISION 3.6. CLAIMS AND ACTIONS AGAINST PUBLIC ENTITIES AND PUBLIC EMPLOYEES / PART 2. LIABILITY OF PUBLIC ENTITIES AND PUBLIC EMPLOYEES / CHAPTER 5. Medical, Hospital and Public Health Activities
California Codes

Cal. Government Code § 854.4 (2026)

Medical, Hospital and Public Health Activities

✓ current as of May 2026
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As used in this chapter, “mental illness or addiction” means any condition for which a person may be detained, cared for, or treated in a mental institution, in a facility designated by a county pursuant to Chapter 2 (commencing with Section 5150) of Part 1 of Division 5 of the Welfare and Institutions Code, or in a similar facility.

Notes of Decisions
Cited in 3 cases (1 in the last 5 years), 1986–2024 · leading case: Michael E. L. v. Cnty. of San Diego, 183 Cal. App. 3d 515 (Cal. Ct. App. 1986).
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Michael E. L. v. Cnty. of San Diego, 183 Cal. App. 3d 515 (Cal. Ct. App. 1986). · cites it 2× “Mental illness includes "any condition for which a person may be detained, cared for, or treated in a mental institution," or a facility established by the County pursuant to Chapter 2 of LPS (Gov. Code, § 854.4.) This statutory immunity covers specific acts and omissions by…”
Lum v. Cnty. of San Joaquin, 756 F. Supp. 2d 1243 (E.D. Cal. 2010). “” Gov.Code § 854.4. This statutory immunity covers specific acts and omissions by public employees for failure to diagnose and failure to prescribe.”
(PC) Wright v. Deforest, No. 2:24-cv-00420 (E.D. Cal. May 30, 2024). “12 Finally, in the initial section of claim four, plaintiff also alleges, in conclusory form, a 13 violation of California Government Code Section 854.4 and “defamation and libel[ous] act.”
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