Final answer:
The statement is true; an Includes note under a three-digit code in the ICD Tabular List applies to the entire category represented by that code.
Step-by-step explanation:
The student's question pertains to the organization of the International Classification of Diseases (ICD), which is a coding system used by healthcare professionals to classify and code all diagnoses, symptoms, and procedures. The question is specific to the Tabular List of the ICD, where codes are organized hierarchically. The Includes note, when found under a three-digit code, is intended to give additional information about the conditions covered by the code. A. True — If an Includes note appears under a three-digit code title in the Tabular List, it indeed applies to all conditions encompassed within that entire three-digit category.