Ready or not, the U.S. healthcare industry is poised to flip the switch from the ICD-9 to the ICD-10 diagnostic and procedural coding system on Oct. 1, significantly changing how billions of dollars ...

The number of diagnosis codes has expanded from 13,000 ICD-9 codes to 68,000 ICD-10 codes, with 78 percent of ICD-9 diagnosis codes mapping 1-to-1 with an ICD-10 code, either exactly or approximately.