MEMO receives SMR1 from Information Statistics Division
Since 1961, all hospitals in Scotland have been required to compile and return coded information on all acute inpatient admissions, forming the basis of the Scottish Morbidity Record 1 (SMR1), which contains administrative, demographic and diagnostic information. In Tayside this is coded by medical clerks before being entered onto computer and subjected to quality control. The data are then sent to the Information and Statistics Division (ISD) of the Common Services Agency of the National Health Service. Each SMR1 record has one principal and five other diagnostic fields coded according to the International Classification of Diseases 9th Revision (ICD9) (World Health Organisation, 1977). In 1996, the NHS introduced the 10th Revision of the ICD codes (World Health Organisation, 1992). There is also one main operation or procedure field and three others coded according to the Office of Population and Census Surveys 4th Revision (OPCS4) classification (HMSO, 1990). In Tayside, there are approximately 63 000 hospital discharges per year available as a CHI number specific record. MEMO holds historical SMR1 data from 1980 allowing for a past medical history of hospitalisation for a condition to be controlled (Figure 28.1).
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