Prescription drug coverage: dose adjustments. Existing law, the Knox-Keene Health Care Service Plan Act of 1975, provides for the licensure and regulation of health care service plans by the Department of Managed Health Care, and makes a willful violation of the act a crime. Existing law provides for the regulation of health insurers by the Department of Insurance. Existing law generally authorizes a health care service plan or health insurer to use utilization review, under which a licensed physician or a licensed health care professional who is competent to evaluate specific clinical issues may approve, modify, delay, or deny requests for health care services based on medical necessity. Existing law also prohibits a health care service plan that covers prescription drug benefits from limiting or excluding coverage for a drug that was previously approved for coverage if an enrollee continues to be prescribed that drug, as specified. The bill would authorize a licensed health care professional to request, and would require that they be granted, the authority to adjust the dose or frequency of a drug to meet the specific medical needs of the enrollee or insured without prior authorization if specified conditions are met. Under the bill, if the enrollee or insured has been continuously using a prescription drug selected by their prescribing provider for the medical condition under consideration while covered by their current or previous health coverage, the health care service plan or health insurance policy would be prohibited from limiting or excluding coverage of that prescription. With respect to health care service plans, the bill would specify that its provisions do not apply to Medi-Cal managed care plan contracts. Because a willful violation of these provisions by a health care service plan would be a crime, the bill would impose a state-mandated local program.