Why it is important to be familiar with the ICD coding manual

The ICD is important because it provides a common language for reporting and monitoring diseases. This allows the world to compare and share data in a consistent and standard way – between hospitals, regions and countries and over periods of time. It facilitates the collection and storage of data for analysis and evidence-based decision-making.

They probably don't understand either 1. what the nightmare is about or 2. his anxiety and stress