The prefix "sub-" refers to which of the following?

The prefix "sub-" is derived from Latin, meaning "under" or "below." In medical terminology, it is commonly used to indicate a position beneath or a lesser degree of something. For example, "subcutaneous" refers to tissue located beneath the skin.

Understanding the meaning of prefixes is essential in medical coding as it helps in accurately interpreting terms related to anatomy, pathology, and procedures. The other options do not align with the meaning of "sub-," which specifically points to a position that is underneath or below something else in the medical context.