What guideline dictates the structure and conventions of the ICD-10-CM classification?

The guideline that dictates the structure and conventions of the ICD-10-CM classification is found in Section I. This section outlines the foundational rules and instructions necessary for proper coding, including conventions for how to use codes, the format of the codes, and general guidelines for code application. It is essential for coders to understand and follow these rules to ensure accurate and consistent coding practices in medical records.

Section I includes key information about the ICD-10-CM coding system, such as definitions of key terms, format, and organization of codes, as well as instructions on how to use the codes effectively. This knowledge is crucial for a coder to navigate through the coding process and apply the codes correctly and consistently in clinical documentation.