Cal. Business and Professions Code § 6152

(a) It is unlawful for: (1) Any person, in an individual capacity or in a capacity as a public or private employee, or for any firm, corporation, partnership or association to act as a runner or capper for any attorneys or to solicit any business for any attorneys in and about the state prisons, county jails, city jails, city prisons, or other places of detention of persons, city receiving hospitals, city and county receiving hospitals, county hospitals, superior courts, or in any public institution or in any public place or upon any public street or highway or in and about private hospitals, sanitariums or in and about any private institution or upon private property of any character whatsoever. (2) Any person to solicit another person to commit or join in the commission of a violation of subdivision (a). (b) A general release from a liability claim obtained from any person during the period of the first physical confinement, whether as an inpatient or outpatient, in a clinic or health facility, as defined in Sections 1203 and 1250 of the Health and Safety Code, as a result of the injury alleged to have given rise to the claim and primarily for treatment of the injury, is presumed fraudulent if the release is executed within 15 days after the commencement of confinement or prior to release from confinement, whichever occurs first. (c) Nothing in this section shall be construed to prevent the recommendation of professional employment where that recommendation is not prohibited by the Rules of Professional Conduct of the State Bar of California. (d) Nothing in this section shall be construed to mean that a public defender or assigned counsel may not make known his or her services as a criminal defense attorney to persons unable to afford legal counsel whether those persons are in custody or otherwise.