<h3>What is an E-code? An external cause of injury code or E-code is used when a patient presents to a healthcare provider with an injury.</h3><h3>V codes identify circumstances for encounter related to circumstances other than a disease or injury and are also used to report problems or factors that may influence present or future care. Appropriate V code assignment is extremely important in terms of reporting, medical necessity and avoiding inaccurate denials. The V code chapter is a supplemental classification of ICD-9-CM and includes categories V01-V89.</h3>