A coder locates a tentative ICD-10-CM code in the Alphabetic Index for a clinic diagnosis. What mandatory next step applies before final assignment?
Select an answer to reveal the explanation.
Short Explanation
The Index gets you to the neighborhood; the Tabular confirms the address. Instructional notes, excludes, and missing characters hide in the Tabular—skipping it is how wrong codes sneak onto claims. Look it up, then verify.
Full Explanation
Official coding process requires locating a code in the Alphabetic Index and then verifying it in the Tabular List. The Tabular contains instructional notes, includes/excludes, code first/use additional code directions, and character requirements that the Index may not fully display. Assigning from the Index alone risks incomplete or incorrect codes. CPT procedure codes do not replace ICD-10-CM diagnosis verification.