The International version of ICD should not be confused with national Clinical Modifications (CM) 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 68,000 codes.[7] The US also has the ICD-10 Procedure Coding System (ICD-10-PCS), a coding system that contains 76,000 codes not used by other countries.[8]