The department of Health and Human Services (HHS) has mandated the replacement of the ICD-9-CM code sets medical coders and billers in the United States use now to report healthcare diagnoses and procedures with ICD-10 code sets, effective October 1, 2014. Incorporation of ICD-10 codes is the biggest change in standard healthcare coding systems in decades which will not only drastically increase but also change the structure of the codes that providers and payers have been using for the past three decades. Before that, on January 1, 2012, standards for electronic health transactions change from Version 4010/4010A1 to Version 5010. Unlike Version 4010, Version 5010 accommodates the ICD-10 code structure. This change before the ICD-10 implementation date helps in adequate testing and implementation time. Along with its transaction precursor Version 5010, ICD-10 implementation will impact every system, process and transaction that contains or uses a diagnosis code.
No wonder, this is often but correctly compared to the effort and planning that took place around Y2K.