Lucas123 writes: The change over from a medical coding system in use since the 1970s to an updated version that adds more than 50,000 new 7-character codes is being compared to Y2K as an IT project that is nearly impossible to complete on time. ICD-10, which replaces ICD-9, adds far more granularity to medical diagnosis and treatment. For example, ICD-9 has one code for a finger amputation. In contrast, ICD-10 has a code for every finger and every section of every finger. An "unfunded mandate", the change over to ICD-10 codes is a multi-year project for hospitals, state Medicaid organizations, and insurance providers. The effort, which affects dozens of core systems, is taxing IT operational budgets at a time when shops are already under the gun to implement electronic health records.