Cal. Insurance Code § 10140

(a) No admitted insurer, licensed to issue life or disability insurance, shall fail or refuse to accept an application for that insurance, to issue that insurance to an applicant therefor, or issue or cancel that insurance, under conditions less favorable to the insured than in other comparable cases, except for reasons applicable alike to persons of every race, color, religion, sex, gender, gender identity, gender expression, national origin, ancestry, or sexual orientation. Race, color, religion, national origin, ancestry, or sexual orientation shall not, of itself, constitute a condition or risk for which a higher rate, premium, or charge may be required of the insured for that insurance. Unless otherwise prohibited by law, premium, price, or charge differentials because of the sex of any individual when based on objective, valid, and up-to-date statistical and actuarial data or sound underwriting practices are not prohibited. (b) Except as otherwise permitted by law, no admitted insurer, licensed to issue disability insurance policies for hospital, medical, and surgical expenses, shall fail or refuse to accept an application for that insurance, fail or refuse to issue that insurance to an applicant therefor, cancel that insurance, refuse to renew that insurance, charge a higher rate or premium for that insurance, or offer or provide different terms, conditions, or benefits, or place a limitation on coverage under that insurance, on the basis of a person’s genetic characteristics that may, under some circumstances, be associated with disability in that person or that person’s offspring. (c) No admitted insurer, licensed to issue disability insurance for hospital, medical, and surgical expenses, shall seek information about a person’s genetic characteristics for any nontherapeutic purpose. (d) No discrimination shall be made in the fees or commissions of agents or brokers for writing or renewing a policy of disability insurance, other than disability income, on the basis of a person’s genetic characteristics that may, under some circumstances, be associated with disability in that person or that person’s offspring. (e) It shall be deemed a violation of subdivision (a) for any insurer to consider sexual orientation in its underwriting criteria or to utilize marital status, living arrangements, occupation, sex, beneficiary designation, ZIP Codes or other territorial classification within this state, or any combination thereof for the purpose of establishing sexual orientation or determining whether to require a test for the presence of the human immunodeficiency virus or antibodies to that virus, where that testing is otherwise permitted by law. Nothing in this section shall be construed to alter, expand, or limit in any manner the existing law respecting the authority of insurers to conduct tests for the presence of human immunodeficiency virus or evidence thereof. (f) This section shall not be construed to limit the authority of the commissioner to adopt regulations prohibiting discrimination because of sex, marital status, or sexual orientation or to enforce these regulations, whether adopted before or on or after January 1, 1991. (g) “Genetic characteristics” as used in this section shall have the same meaning as defined in Section 10123.3. (h) “Sex” as used in this section shall have the same meaning as “gender.” “Gender” means sex, and includes a person’s gender identity and gender expression. “Gender expression” means a person’s gender-related appearance and behavior whether or not stereotypically associated with the person’s assigned sex at birth.