To help pathologists who will be required to report cancer diagnoses electronically to the California Cancer Registry (CCR) beginning January 1, 2019, the California Department of Public Health (CDPH) has released a guide that defines the reporting requirements and provides standardized reporting formats. The new reporting requirements became state law last September so that the CCR database could allow clinical trials matching and rapid identification of cancer cases for research studies. To access the guide, go to the CHPH website at