Cal. PROB § 4658
This is the official text of Cal. PROB § 4658, part of California’s Probate Code — governs wills, trusts, estates, and conservatorships.
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Official statutory text
Unless otherwise specified in a written advance health care directive, for the purposes of this division, a determination that a patient lacks or has recovered capacity, or that another condition exists that affects an individual health care instruction or the authority of an agent or surrogate, shall be made by the primary physician.
Status: in_force · Read it on the official government site
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