The International Classification of Diseases and Related Health Problems (ICD) is the standard diagnostic tool for epidemiology, health management and clinical purposes. This includes the analysis of the general health situation of population groups. It is used to monitor the incidence and prevalence of diseases and other health problems. It is produced by the World Health Organization.
October 1, 2015, was the federally mandated date to transition from ICD-9 to ICD-10.
The ICD-10 code set allows more than 14,400 different codes and permits the tracking of many new diagnoses. The codes can be expanded to over 16,000 codes by using optional sub-classifications. The detail reported by ICD can be further increased, with a simplified multi-axial approach, by using codes meant to be reported in a separate data field.
The California Medical Association (CMA) has created an ICD-10 resources page on its website. CMA has also published an ICD-10 transition guide, What Physicians Need to Know. Members can download a free copy from the CMA website (login required), or contact the SMCMA for a copy.