Cal. Welfare and Institutions Code § 17401

No lien taken by a county pursuant to Section 17109 for care provided to a person in a county hospital shall be enforced against the home of that person (1) during his lifetime or that of his spouse, or (2) during the minority of his children if they reside in the home, or (3) during the lifetime of any dependent adult child who resides in the home and who is incapable of self-support because of mental or physical disability. Any lien taken by a county for county hospital care shall be released immediately when the amount owing the county for that care is paid. The county shall render to a person to whom care has been provided in a county hospital a statement setting forth the charges upon which its claim for reimbursement is based. No interest or carrying charge shall be charged in connection with any debt incurred for county hospital care. If a person against whose home a lien has been imposed for county hospital care desires to sell his home, the county shall release its lien against the original home and transfer it to the new home, provided that it finds that its security will not be impaired. If the person desires to borrow money for the purpose of making improvements to his home, using his home for security, the county shall subordinate its lien to the mortgage or other security interest given for the loan, if the county finds that its security will not be impaired. If a person against whose home a lien has been imposed for county hospital care has the home acquired by a public entity for public use, the county shall release its lien against the original home and transfer it to any new home the person acquires. No lien shall be taken pursuant to Section 17109 against the home of a person for care provided him in a county hospital, if he was confined to the county hospital as the result of a diagnosis of tuberculosis. No lien shall be taken pursuant to this part against the home or other property of any relative, except for a parent of a minor or a spouse, liable for the support of a person confined in a county hospital or otherwise receiving aid under this part. In no way do the authorizations and limitations expressed in this section enlarge upon the power of counties to take or impose liens under existing law. Nothing contained in this section shall be construed to permit a county to impose a lien for aid or other assistance granted under any public assistance program established by this code for which federal funds are received by this state, or under the aid to the potentially self-supporting blind program.