AMA CPT® Assistant - 2014 Issue 12 (December)

ICD-10-CM Seventh (7th) Character (December 2014)

December 2014 pages 13-15 ICD-10-CM Seventh (7th) Character The April and May issues of the CPT Assistant provided information comparing the ICD-9 –CM diagnosis code (hereafter called ICD-9-CM) and ICD-10-CM code structure and format. This article will discuss another important difference between ICD-9-CM and ICD-10-CM: Assignment of a 7th character (also known as 7th character extension) to codes in certain ICD-10-CM categories. In addition, this article will focus on the ICD-10-CM structure difference, as it relates to the 7th character, primarily used to document episode of care for injuries, pregnancy, childbirth and the puerperium, and other conditions with external...

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