Diagnosis Codes - E Codes / E codes are important

Article Overview

This article covers the use of ICD-9-CM external cause codes in diagnosis coding, with emphasis on claim processing for accidents and the separation of adverse effects from poisonings. It is written for coders and billing professionals who need a general understanding of when external cause information matters and how the surrounding diagnosis sequence is organized in these scenarios. The discussion includes broad guidance tied to claims workflow, documentation context, and the related ICD-9-CM drug tables.