Important Update: Assembly Bill 144, signed into law on September 17, 2025, requires all full-service health plans in California to continue covering preventive services and immunizations without cost-sharing or prior authorization, regardless of changes to federal guidelines. The law codifies coverage for USPSTF “A” and “B” rated services, ACIP-recommended immunizations, and HRSA-supported guidelines as of January 1, 2025, and allows the California Department of Public Health (CDPH) to supplement these recommendations. Health plans must implement CDPH updates within 15 business days, and coverage applies to both commercial and Medi-Cal managed care plans. To see those additional guidelines/requirements visit the CDPH website.

Please click on the selected Preventive Health Guidelines and Immunizations guideline PDF document to view it on your computer.

Immunization Schedules

If you would like more information on additional immunization schedules, please visit this section.

Posted on July 17th, 2015 and last modified on October 9th, 2025.

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