Definition
                A code set representing whether an electronic contact address is the preferred contact address.
            
            
    
    Representation
| Data Type | CHARACTERSTRING | 
|---|---|
| Format | N | 
| Maximum character length | 1 | 
Values
| Value | Meaning | Start Date | End Date | |
|---|---|---|---|---|
| Permissible Values | 1 | Preferred | ||
| 2 | Not preferred | |||
| 3 | Not defined | |||
| 9 | Unknown | 
Related content
| Relation | Count | 
|---|---|
| Data Elements implementing this Value Domain | 1 |