What is the first step in looking up an ICD-10-CM diagnosis code?

A) Look up the main term in the Alphabetic Index.
B) Look up the main term in the Tabular List.
C) Look up the code in the Alphabetic Index.
D) Look up the code in the Tabular List.

Alphabetic Index

A systematic arrangement of terms, names, or other items, organized alphabetically to facilitate lookup.

Main Term

In indexing and documentation, the primary word or phrase used to describe the main idea or topic of a document, book, or article.