A code describing whether the finding is question is absent, unknown, or not suspected.

Codes that describe normal and pathologic anatomic systems, regions, cavities, and spaces.

The relative direction of an object described using the analogy of a 12-hour clock to describe angles and directions. One imagines a clock face lying either upright or flat in front of oneself, and identifies the twelve hour markings with the directions in which they point.

A code describing whether the finding in question is present, possible, suspected, etc.

Whether a feature or condition is present or absent.

Code set indicating yes, no, or unknown.