Cal. Code Regs. tit. 22, § 51509.2
(b) The Department shall use the “Health Insurance Regulations Manual” (HIRM-1), Intermediary Letters and other payment guidelines issued through March 31, 1976 by the U.S. Department of Health, Education, and Welfare for the administration of Title XVIII of the Social Security Act:
1. New section filed 2-25-70; designated effective 4-1-70 (Register 70, No. 9).
2. Amendment filed 1-30-73; effective thirtieth day thereafter (Register 73, No. 5).
3. Amendment filed 11-1-76 as an emergency; effective upon filing (Register 76, No. 45).
4. Certificate of Compliance filed 1-28-77 (Register 77, No. 5).