Action verbs should be written in noun form within SNOMED CT descriptions. This most often means the verb will end with a suffix of –tion, -sion, -ment, -al, -ence, or -ance.
However, the root form of the verb may be used when it does not make a word when ending in noun suffixes.
Lastly, the verb with a suffix of –ing may be used when the root form of the verb may cause ambiguity in the meaning, i.e. the root form of the verb could also be a physical object.
Common usage may dictate some exceptions.
Although ‘repairment’ may be considered a valid word, its use has fallen out of common usage in comparison to ‘repair’.
Check for approved and unapproved naming patterns in the Precoordination Naming Pattern Project.
A past tense verbal phrase should not be used to name a procedure, since it indicates that the procedure was done in the past.
However, the following is an acceptable example using a noun phrase,
Existing descriptions containing past tense verbs should be moved to the 243796009 | Situation with explicit context (situation)| hierarchy.