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]
HIV/AIDS In 2016, about 36.7 million people were living with HIV and it resulted in 1 million deaths.[16] There were 300,000 fewer new HIV cases in 2016 than in 2015.[17] Most of those infected live in sub-Saharan Africa.[5] From the time AIDS was identified in the early 1980s to 2017, the disease has caused an estimated 35 million deaths worldwide.[18] HIV/AIDS is considered a pandemic—a disease outbreak which is present over a large area and is actively spreading.[19] HIV originated in west-central Africa during the late 19th or early 20th century.[20] AIDS was first recognized by the United States Centers for Disease Control and Prevention (CDC) in 1981 and its cause—HIV infection—was identified in the early part of the decade.[21]