Cal. Welf. & Inst. Code § 14170.10
(a) No provider shall submit a claim to the department or its fiscal intermediaries for the dispensing or furnishing of a controlled drug, a dangerous drug, or a dangerous device, or a drug or device requiring a written order or prescription for the drug or device to be covered under the Medi-Cal program or for the performance of a clinical laboratory test or examination, unless the provider’s records contain an order authorized by Section 4019 of the Business and Professions Code, or a prescription, including an electronic transmission prescription, signed by the person lawfully authorized by his or her practice act to prescribe or order the dispensing or furnishing of that drug or device to, or for the performance of a clinical laboratory test or examination that meets the federal CLIA standard for test requisition as set forth in Section 493.1241 of Title 42 of the Code of Federal Regulations upon, a Medi-Cal beneficiary, except the following:
(b) For purposes of this section:
(4) “Drug or device” means:
(c) Notwithstanding any other provision of law, the director may, without taking regulatory action pursuant to Chapter 3.5 (commencing with Section 11340) of Part 1 of Division 3 of Title 2 of the Government Code, implement, interpret, or make specific this section by means of a provider bulletin or similar instruction. The department shall notify and consult with interested parties and appropriate stakeholders in implementing, interpreting, or making specific the provisions of this section, including all of the following: