Code specifying the situation or category to which the code applies

Reference information as defined for a particular Transaction Set or as specified by the Reference Identification Qualifier

UC02 is the form number used by the information provider.

Reference information as defined for a particular Transaction Set or as specified by the Reference Identification Qualifier

UC03 is the question number used by the information provider.

Code indicating a Yes or No condition or response

UC04 indicates the answer to the question defined in UC03. A "Y" indicates answer is a positive response; an "N" indicates a negative response.