On April 1, 2023, an updated version of the Health Care Classification System (SKS) came into force. The Danish Health Data Authority quarterly updates the SKS system, which includes coding for procedures, diagnoses, and other coding (e.g., administrative, pharmaceuticals). In the current version, eight new surgical procedure codes, one medical procedure code, multiple codes for regional anesthesia, one code for diagnostic imaging, one for nuclear medicine, and several additional codes were implemented.