HL7 Version 2.5.1 Implementation Guide: Immunization …

Aug 01, 2012 · Data types specify the format and type of data used. A data type may be as simple as a numeric data type, which allows a number. It may be a more complex coded entry that requires a specific set of code values and the name of the code system. Data types may contain subcomponents that are specified by data types. ................
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