KWIC-Claim Medical Billing Demo - Version 1.2.2 KWIC-Claim Medical Billing Software. One of the easiest to use medical billing and medical claims printing software packages available today! KWIC-Claim medical billing software is built around the most common medical-billing format in use today, the HCFA-1500 form. With the KWIC-Claim screen format there is fewer than 4.