<P> The WHO provides detailed information about ICD online, and makes available a set of materials online, such as an ICD - 10 online browser, ICD - 10 Training, ICD - 10 online training, ICD - 10 online training support, and study guide materials for download . </P> <P> The International version of ICD should not be confused with national modifications of ICD that frequently include much more detail, and sometimes have separate sections for procedures . The US ICD - 10 Clinical Modification (ICD - 10 - CM), for instance, has some 93,000 codes . The US also has the ICD - 10 Procedure Coding System (ICD - 10 - PCS), a coding system that contains 76,000 procedure codes that is not used by other countries . </P> <P> Work on ICD - 10 began in 1983 and was completed in 1992 . </P> <P> The following is a list of ICD - 10 codes . </P>

When did icd 9 change to icd 10