On Oct. 1, 2013, physician practices and hospitals will be required by CMS to have transitioned from the 30-year-old ICD-9-CM codes to the ICD-10-CM (clinical modification) and ICD-10-PCS (procedural coding system) codes. The switch will cost time and money because ICD-10 has nearly nine-times more codes. Many practices and facilities, however, have not even begun a preliminary assessment of what the transition will require, which could negatively impact their bottom line.