Adding a Clinical Trial number to your claim

Clinical Trial Numbers


If you or your office is participating in treating patients involved in a clinical trial, often the clinical trial registry number is required to be present on the claim in box 19 on a paper HCFA 1500 claim form or loop 2300 REF02 for an electronic claim.

DrChrono has added a field to enter the information and have it appear in the appropriate places on either a paper or electronic claim.

The field is located in the patient's chart on the Live Claims Feed. Once entered, it will appear in box 19 on the paper HCFA 1500 claim form preceded by the letters "CT". It will also appear in loop 2300 REF02 on the 837 EDI claim file.


  1. Navigate to Billing > Live Claims Feed
  2. Use the available filters to identify your patient


       3. Once identified, go into the appointment by clicking on the blue date of service



         4. Enter the clinical trial number in the box in the right-hand column labeled                              Clinical Trial #



         5. The number will appear in box 19 on the paper HCFA-1500 claim form and loop                2300 REF02 on an electronic claim file.