What is ICD-9 Coding? From the College | Issue: August 2010 | August 1, 2010 In the end, always remember that if it is not documented, it is not billable. If you have any questions about coding diagnosis codes, contact Melesia Tillman, CPC, CRHC, CHA at (404) 633-3777, ext. 820, or at [email protected]. Page: 1 2 | Single Page Share: