Don't miss revisions in chemistry, immunology, surgical pathology and more Avoid denials in 2008 by using this chart to quickly master the CPT code changes affecting your lab. Keep the chart close to use as a handy reference tool throughout the year. Look to Pathology/Lab Coding Alert for continued in-depth coverage of how to use these new codes -- start with "3 Ways to Prepare Your Lab for -Unlisted Antigen- Changes" on page 2 of this issue.