Developmental 'testing' changes to 'screening.' Focusing on new codes will help keep your claims compliant in 2012, but descriptor revisions or clarifications can also affect your code selection. Case in point: These changes are significant because CPT® 2011 listed both codes as developmental "testing" codes, with 96110 referring to "limited" testing and 96111 describing "extended" tests. Now the descriptors more closely relate to how practices actually refer to these codes, since many doctors document "screening" when they perform the services described by 96110.