 As many clinical coders don't have patient care backgrounds, and healthcare providers might not realize the importance of accurate documentation, the CDI professional serves to make the connection between these two groups.CDI professionals should be familiar with Medicare Severity DRGs (MS-DRG) ICD-9 to ICD-10 coding.The Association of Clinical Documentation Integrity Specialists (ACDIS), part of Simplify Compliance, LLC, is a provider of integrated information, education, training, and consulting products and services in healthcare regulation and compliance.