|DotNet Class HL7Connect.Cda.CS|
Coded data in its simplest form, where only the code is not predetermined.
The code system and code system version are implied and fixed by the context in which the CS value occurs.
Due to its highly restricted functionality, CS SHALL only be used for simple structural attributes with highly controlled and stable terminologies where:
|The plain code symbol defined by the code system. if the code value is empty or null, then there is no code in the code system that represents the concept.|
Code SHALL only contain characters that are either a letter, a digit, or one of '.', '-', '_' or ':'. Code systems that are used with CS SHALL NOT define code symbols or expression syntaxes that contain whitespace or any other characters not in this list.