Cal. Ins. Code § 10273.3
The term "guaranteed renewable policy" as used in this chapter (commencing with Section 10270) means a policy which the insured has the right to continue in force subject to its terms by the timely payment of premium (a) until at least age 50, or (b) in the case of a policy issued after age 44, for at least five years from its date of issue during which period the insurer has no right to make unilaterally any change in any provision of the policy while the policy is in force, except that the insurer may, in accordance with the provisions of the policy, make changes in premium rates as to all insureds who were placed in the same class for purposes of rate determination in the process of issuance of the policy or making it guaranteed renewable. Such a policy may use any of the provisions in Section 10291.6, 10350.2, 10350.4 or 10369.7, which may be used in noncancelable policies.
Ca. Ins. Code § 10273.3