How are the Official Guidelines for ICD-10-CM divided?

The Official Guidelines for ICD-10-CM are organized into four distinct sections, each serving a specific purpose in guiding coders on how to apply the coding system accurately.

The first section provides general guidelines applicable to all coding practices. It outlines fundamental coding conventions, including definitions and the structure of codes. The second section focuses on the hierarchy and specific rules for selecting codes, including principles like combination codes and code specificity. The third section provides guidelines for coding and reporting specific conditions and situations, addressing nuances in various clinical scenarios. Finally, the fourth section contains guidelines pertinent to external causes of morbidity and injury, which includes specific instructions related to coding those circumstances.

This structured division allows coders to navigate the guidelines effectively and ensures that they use consistent methods in coding diagnoses and procedures, leading to more accurate data collection and reporting in healthcare settings.