ICD-10 and ICD-9-CM
The following descriptions of the ICD-9 and ICD-9-CM codes has been taken from the National Centre for Health Statistics (NCHS) website.
There are two related classifications of diseases with similar titles. The International Classification of Diseases (ICD) is the classification used to code and classify mortality data from death certificates. The International Classification of Diseases, Clinical Modification (ICD-CM) is used to code and classify morbidity data from the inpatient and outpatient records, physician offices, and most NCHS surveys. NCHS serves as the World Health Organization (WHO) Collaborating Center for the Classification of Diseases for North America and in this capacity is responsible for coordination of all official disease classification activities in the U.S. relating to the International Classification of Diseases (ICD) and its use, interpretation, and periodic revision. The Collaborating Center is also responsible in North America for the family of ICD classifications, which includes the International Classification of Impairments, Disabilities, and Handicaps (ICIDH).
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