when was the international classification of diseases first adopted by the united states
International Statistical Classification of Diseases and Related Health Problems The Eighth Revision Conference convened by WHO met in Geneva, from 6 to 12 July 1965. This revision was more radical than the Seventh but left unchanged the basic structure of the Classification and the general philosophy of classifying diseases, whenever possible, according to their etiology rather than a particular manifestation. During the years that the Seventh and Eighth Revisions of the ICD were in force, the use of the ICD for indexing hospital medical records increased rapidly and some countries prepared national adaptations which provided the additional detail needed for this application of the ICD. In the USA, a group of consultants was asked to study the 8th revision of ICD (ICD-8a) for its applicability to various users in the United States. This group recommended that further detail be provided for coding hospital and morbidity data. The American Hospital Association's "Advisory Committee to the Central Office on ICDA" developed the needed adaptation proposals, resulting in the publication of the International Classification of Diseases, Adapted (ICDA). In 1968, the United States Public Health Service published the International Classification of Diseases, Adapted, 8th Revision for use in the United States (ICDA-8a). Beginning in 1968, ICDA-8a served as the basis for coding diagnostic data for both official morbidity [and mortality] statistics in the United States.[8][9]
Columbian exchange The history of syphilis has been well-studied, but the exact origin of the disease is unknown and remains a subject of debate.[25] There are two primary hypotheses: one proposes that syphilis was carried to Europe from the Americas by the crew of Christopher Columbus in the early 1490s, while the other proposes that syphilis previously existed in Europe but went unrecognized.[26] These are referred to as the "Columbian" and "pre-Columbian" hypotheses.[26] The first written descriptions of the disease in the Old World came in 1493.[27] The first large outbreak of syphilis in Europe occurred in 1494/1495 in Naples, Italy, among the army of Charles VIII, during their invasion of Naples.[26][28][29][30]