Medical Terminology and Documentation
This domain tests word building and the documentation standards that make a record legally and clinically useful. Candidates should be fluent with prefixes, suffixes, and combining forms (e.g., cardi-, -itis, hyper-, -ectomy), directional and positional terms (proximal, distal, superior, bilateral), and the standard charting formats: SOAP (Subjective, Objective, Assessment, Plan), CHEDDAR, and narrative notes. Know the difference between signs (observable) and symptoms (reported), and between acute and chronic.
Traps to watch
- Reversing prefix meaning: hypo- (under) versus hyper- (over); brady- (slow) versus tachy- (fast).
- Confusing -otomy (cutting into), -ostomy (creating a mouth/stoma), and -ectomy (removal).
- Treating abbreviations as universal - many are on the Joint Commission "do not use" list (e.g., U for unit, QD, trailing zeros).
- Writing subjective data in the Objective section of a SOAP note.
- Late entries: they must be dated, timed, and identified as late, never backdated.
Rule of thumb
Decode from the suffix backward. Read the suffix first, then the prefix, then the root - that usually reveals the meaning without memorizing every word.
Worked example
Gastroduodenostomy: suffix -stomy = surgical opening; root gastr = stomach; combining duoden = duodenum. Meaning: a surgical opening connecting the stomach to the duodenum. Compare gastrectomy (removal of the stomach) and gastrotomy (incision into the stomach). One letter changes the procedure entirely - a frequent exam trap.