Final answer:
Includes notes are the notes that appear under a 3 character code title to further explain or list examples of content within a category in health coding systems.
Step-by-step explanation:
Notes that appear immediately under a 3 character code title to further define, or give examples of, the content of the category are known as B) Includes notes. These notes provide additional information about conditions included within the code category and may list several related conditions to clarify the classification. Excludes notes, on the other hand, delineate what conditions are not part of that category. Whereas Guidelines and Instructional notes may offer more comprehensive instructions on coding practices or category definitions.