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Medical Prefixes
based on the AAPC CPC Certification study materials
| Term | Definition |
|---|---|
| a-, an- | without or absence of |
| ab- | away from |
| ad- | to or towards |
| ana- | up, upward |
| ante- | before |
| anti- | against |
| append- | of the appendix |
| bi- | two |
| brady- | slow |
| contra- | against |
| di- | two |
| dis- | apart, separate; to undo |
| ecto-/exo- | outside |
| endo- | within |
| epi- | above; over |
| erythr/o- | red |
| glyc- | sugar |
| hyper- | high, above normal |
| hypo- | low, below normal |
| im- | not |
| infra- | below, beneath |
| inter- | between |
| intra- | within; inside |
| iso- | equal, same |
| macro- | large |
| mal- | bad |
| meso- | middle |
| meta- | alter, change; beyond |
| micro- | small |
| mono- | one |
| multi- | many, multiple |
| mut- | change, alter |
| neo- | new |
| para- | beside, near |
| patho- | disease |
| peri- | surrounding, around |
| poly- | many, multiple |
| post- | after, behind |
| pre- | before, in front of |
| pseudo- | false |
| re- | again, backward |
| retro- | behind, backward |
| semi- | half |
| sub- | under, below |
| super- | over, above |
| syn- | together, with |
| tachy- | fast, rapid |
| tetra- | four |
| trans- | across |
| tri- | three |
| ultra- | beyond, excess |
| uni- | one |
| auto- | self |
| circum- | around |
| de- | away from, down |
| dys- | bad, abnormal, difficult |
| en- | in, into, within |
| eu- | normal, good |
| ex- | away from, out |
| hemi- | half |
| in- | into, not, within |
| leuk- | white |
| meg- | large |
| non- | not |
| olig- | few, scant |
| poly- | many, much |
| pro- | before, in front of |
| supra- | above, over |