When no code exists for a procedure or service, the appropriate unlisted procedure/code should be used in this type of condition and is the correct choice.
This is the process in which healthcare diagnosis, treatments etc are transformed into numeric and alphanumeric letters. In some cases there are no codes for certain procedures which may most likely be due to the emergence of a new procedure or technology which doesn't have a code yet.
In this type of condition, the appropriate unlisted procedure/code should be used to depict it. They should have certain degree of similarities before they are chosen as the code.
This is therefore the reason why unlisted code is the most appropriate choice in this type of scenario.
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