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Medical Assistant Prep / Unit 26   MAS 637 short lesson, about 20 seconds

How ICD-10-CM Codes Are Built

Captions available

The idea

ICD-ten-CM diagnosis codes have three to seven characters.

In practice

The first characters identify the category, and further characters add detail; some categories need a seventh character, and a placeholder character holds positions when a code is shorter.

Where people slip

A code missing a required character is invalid, and the claim will fail.

Your place on the trail

Every lesson rests on earlier ones and opens later ones. Tap any to jump.

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