California Code, Health and Safety Code - HSC § 1569.657

(a) For any rate increase due to a change in the level of care of the resident, the licensee shall provide the resident and the resident's representative, if any, written notice of the rate increase within two business days after initially providing services at the new level of care. The notice shall include a detailed explanation of the additional services to be provided at the new level of care and an accompanying itemization of the charges.

(b) This section shall not apply to any resident of the facility who is a recipient of benefits pursuant to Article 5 (commencing with Section 12200) of Chapter 3 of Part 3 of Division 9 of the Welfare and Institutions Code under the State Supplementary Program for Aged, Blind and Disabled.

(c) This section shall not apply to a provider who has entered into one or more continuing care contracts at a licensed residential care facility for the elderly pursuant to a certificate of authority, as defined in paragraph (5) of subdivision (c) of Section 1771.