In this situation, a vendor is incorrectly using the PID-13 and PID-14 fields. Instead of using them to store the home and phone numbers of a patient, the vendor is reversing the order of the fields and is indicating which is which by labelling the fields with a suffix of "CWork" and "CHome". Normal usage would be always putting the home phone number in PID-13 and the business phone number in PID-14.

Example:

PID|...|||(234)344-5555CWork|(234)234-7734CHome||||

or

PID|...|||(234)344-5555CHome|(234)234-7734CWork|||| 

This sample message is a typical message produced by the vendor.