Chicago—The mandatory implementation deadline for the International Classification of Diseases, 10th Revision (ICD-10) coding system has been moved back from Oct. 1, 2014, to Oct. 1, 2015, easing pressure on clinicians who have not yet started the change. But this may be the only opportunity to catch up. For clinicians who continue to delay, there is strong potential for chaos and perhaps lost income from a poorly planned transition.