California Code, Insurance Code - INS § 10117

(a) A policy of disability insurance, self-insured employee welfare benefit plan, or nonprofit hospital service plan may not provide an exception for other coverage where the other coverage is entitlement to Medi-Cal benefits under Chapter 7 (commencing with Section 14000) or Chapter 8 (commencing with Section 14500)  1 of Part 3 of Division 9 of the Welfare and Institutions Code, or medicaid benefits under Subchapter 19 (commencing with Section 1396) of Chapter 7 of Title 42 of the United States Code. Each policy of disability insurance shall be interpreted not to provide an exception for those Medi-Cal or medicaid benefits.

(b) A policy of disability insurance may not provide that the benefits payable thereunder are subject to reduction if the individual insured has entitlement to such Medi-Cal benefits.

(c) A policy of disability insurance, self-insured employee welfare benefit plan, or nonprofit hospital service plan shall not provide an exception for enrollment for benefits because of an applicant's entitlement to Medi-Cal benefits under Chapter 7 (commencing with Section 14000) or Chapter 8 (commencing with Section 14500) of Part 3 of Division 9 of the Welfare and Institutions Code, or medicaid benefits under Subchapter 19 (commencing with Section 1396) of Chapter 7 of Title 42 of the United States Code.