(b) The department shall ensure that coverage is provided for medically necessary prescription medications and related medically necessary medical services that are prescribed by a local mental health plan provider, and are within the Medi-Cal scope of benefits, but are excluded from coverage under Chapter 8.9 (commencing with Section 14700), by doing, at least, all of the following:

1. (1) Requiring Medi-Cal managed care plans to comply with the following standards:

   1. (A) The decision regarding responsibility and coverage for a prescription drug shall be made by the Medi-Cal managed care plan within 24 hours, or one business day, from the date the request for a decision is received by telephone or other telecommunication device.
   2. (B) The decision regarding responsibility and coverage for services, such as laboratory tests, that are medically necessary because of medications prescribed by a mental health provider, shall be made by the Medi-Cal managed care plan within seven days following the date the request for a decision is received by telephone or other telecommunication device.
   3. (C) If the decision of the Medi-Cal managed care plan on the request is a deferral because of a determination that the Medi-Cal managed care plan needs more information, the Medi-Cal managed care plan shall transmit notice of the deferral, by facsimile or by other telecommunication system, to the pharmacist or other service provider, to the prescribing mental health provider, and to a designated mental health plan representative. The notice shall set out with specificity what additional information is needed to make a medical necessity determination.
   4. (D) Any denial of authorization or payment for a prescription medication or for any services such as laboratory tests that may be medically necessary because of medications ordered by a mental health plan provider shall set forth the reasons for the denial with specificity. The denial notice shall be transmitted by facsimile or other telecommunication system to the pharmacist or other service provider, to the prescribing mental health provider, to a designated mental health plan representative, and by mail to the Medi-Cal beneficiary.
   5. (E) For purposes of subsequent requests for a medication, the local mental health plan provider prescribing the prescription medication shall be treated as a plan provider under subdivision (a) of Section 1367.22 of the Health and Safety Code.
   6. (F) If the decision cannot be made within five working days because of a request for additional information, any Medi-Cal managed care plan licensed pursuant to Division 2 (commencing with Section 1340) of the Health and Safety Code shall inform the enrollee as required by paragraph (5) of subdivision (h) of Section 1367.01 of the Health and Safety Code. In regard to any Medi-Cal managed care plan contract as described pursuant to subdivision (a) that is issued, amended, or renewed on or after January 1, 2001, with a plan not licensed pursuant to Division 2 (commencing with Section 1340) of the Health and Safety Code, if the decision cannot be made within five working days because of a request for additional information as specified in subparagraph (C), the plan shall notify the enrollee, in writing, that the plan cannot make a decision to approve, modify, or deny the request for authorization. All managed care plans shall, upon receipt of all information reasonably necessary for making the decision and that was requested by the plan, approve, modify, or deny the request for authorization within the timeframes specified in subparagraph (A) or (B), whichever applies.
2. (2) In consultation with the Medi-Cal managed care plans and local mental health plans, establishing a process to recognize credentialing of local mental health plan providers, for the purpose of expediting approval of medications prescribed by a local mental health plan provider who is not contracting with the Medi-Cal managed care plan. In implementing this requirement, the Medi-Cal managed care plan shall not be required to violate licensure, accreditation, or certification requirements of other entities.
3. (3) Requiring any Medi-Cal managed care plan to enter into a memorandum of understanding with the local mental health plan. The memorandum of understanding shall comply with applicable regulations.