In the ICD-10-CM index main term Stricture, which term is identified as the nonessential modifier?

In the ICD-10-CM index, a nonessential modifier is a term that can be used to provide additional information about a main term but is not required for coding purposes. When looking at the main term “Stricture,” the term "stenosis" is identified as a nonessential modifier.

"Stenosis" refers to an abnormal narrowing of a body passage which can describe a type of stricture but does not change the essential meaning of the main term itself. The main term "Stricture" can stand alone as it pertains to the narrowing, while "stenosis" adds specificity but is not required to convey the main concept.

In contrast, other options like "disorder," "condition," and "disease" serve more as general descriptors of the state or nature of a stricture and are not defined as nonessential modifiers in this context. They imply a broader classification of health issues, but the term "stenosis" is more specific, making it nonessential in the coding hierarchy for this particular main term.