ICD-10 is a diagnostic coding system implemented by the World Health Organization (WHO) in 1993 to replace ICD-9, which was developed by WHO in the 1970s. ICD-10 is in almost every country in the world, except the United States. This code set is scheduled to replace ICD-9-CM, our current U.S. diagnostic code set, on October 1, 2013. Another designation, ICD-10-PCS, for procedural coding system, will also be adopted as the inpatient procedural coding system. Current plans would see CPT remain the coding system for physician services. More information on WHO's ICD-10 code set can be found at http://www.who.int/classifications/icd/en/. The Centers for Medicare and Medicaid Services (CMS) has announced that ICD-10-CM will be implemented into the HIPAA mandated code set on October 1, 2013.