The International Classification of Diseases and Related Health Problems (commonly known by the abbreviation ICD)
are designed to promote international comparability in the collection,
processing, classification, and presentation of morbidity and mortality
statistics. ICD-9 - Commonly disputed by healthcare
providers as billing code and not representative of true clinical
outcomes, the ICD-9 transforms verbal descriptions of diseases,
injuries, and procedures into numbers. The current ICD-9-CM has been
revised to incorporate changes in the medical field. To date, there
have been 10 versions of the ICD, with the ICD-10 developed in 1992 to
track mortality statistics. The years for which causes of death in the
United States have been classified by each revision as follows:

• ICD-1 - 1900
  
• ICD-2 - 1910
  
• ICD-3 - 1921
  
• ICD-4 - 1930
  


• ICD-5 - 1939
  
• ICD-6 - 1949


• ICD-7 - 1958


• ICD-8A - 1968
  
• ICD-9 - 1979
  
• ICD-10 - 1992